try to add Kaiteki as a package

requires updating dart (flutter), which is causing problems...

.gitignore

@@ -1,4 +1,2 @@
-.working
 result
-result-*
 /secrets/local.nix

.sops.yaml

@@ -1,47 +0,0 @@
-keys:
-  - &user_desko_colin age1tnl4jfgacwkargzeqnhzernw29xx8mkv73xh6ufdyde6q7859slsnzf24x
-  - &user_lappy_colin age1j2pqnl8j0krdzk6npe93s4nnqrzwx978qrc0u570gzlamqpnje9sc8le2g
-  - &user_servo_colin age1z8fauff34cdecr6sjkre260luzxcca05kpcwvhx988d306tpcejsp63znu
-  - &user_moby_colin age1zsrsvd7j6l62fjxpfd2qnhqlk8wk4p8r0dtxpe4sdgnh2474095qdu7xj9
-  - &host_desko age1vnw7lnfpdpjn62l3u5nyv5xt2c965k96p98kc43mcnyzpetrts9q54mc9v
-  - &host_lappy age1w7mectcjku6x3sd8plm8wkn2qfrhv9n6zhzlf329e2r2uycgke8qkf9dyn
-  - &host_servo age1tzlyex2z6t88tg9h82943e39shxhmqeyr7ywhlwpdjmyqsndv3qq27x0rf
-  - &host_moby age18vq5ktwgeaysucvw9t67drqmg5zd5c5k3le34yqxckkfj7wqdqgsd4ejmt
-creation_rules:
-  - path_regex: secrets/common*
-    key_groups:
-    - age:
-      - *user_desko_colin
-      - *user_lappy_colin
-      - *user_servo_colin
-      - *user_moby_colin
-      - *host_desko
-      - *host_lappy
-      - *host_servo
-      - *host_moby
-  - path_regex: secrets/servo*
-    key_groups:
-    - age:
-      - *user_desko_colin
-      - *user_lappy_colin
-      - *user_servo_colin
-      - *host_servo
-  - path_regex: secrets/desko*
-    key_groups:
-    - age:
-      - *user_desko_colin
-      - *user_lappy_colin
-      - *host_desko
-  - path_regex: secrets/lappy*
-    key_groups:
-    - age:
-      - *user_lappy_colin
-      - *user_desko_colin
-      - *host_lappy
-  - path_regex: secrets/moby*
-    key_groups:
-    - age:
-      - *user_desko_colin
-      - *user_lappy_colin
-      - *user_moby_colin
-      - *host_moby

README.md

@@ -1,133 +0,0 @@
-![hello](doc/hello.gif)
-
-# .❄️≡We|_c0m3 7o m`/ f14k≡❄️.
-
-## What's Here
-
-this is the top-level repo from which i configure/deploy all my NixOS machines:
-- desktop
-- laptop
-- server
-- mobile phone (Pinephone)
-
-everything outside of [hosts/](./hosts/) and [secrets/](./secrets/) is intended for export, to be importable for use by 3rd parties.
-the only hard dependency for my exported pkgs/modules should be [nixpkgs][nixpkgs].
-building [hosts/](./hosts/) will require [sops][sops].
-
-you might specifically be interested in these files (elaborated further in #key-points-of-interest):
-- ~~[`sxmo-utils`](./pkgs/additional/sxmo-utils/default.nix)~~
-  - ~~[example SXMO deployment](./hosts/modules/gui/sxmo/default.nix)~~
-  - these files will remain until my config settles down, but i no longer use or maintain SXMO.
-- [my implementation of impermanence](./modules/persist/default.nix)
-- my way of deploying dotfiles/configuring programs per-user:
-  - [modules/fs/](./modules/fs/default.nix)
-  - [modules/programs/](./modules/programs/default.nix)
-  - [modules/users.nix](./modules/users.nix)
-
-[nixpkgs]: https://github.com/NixOS/nixpkgs
-[sops]: https://github.com/Mic92/sops-nix
-[uninsane-org]: https://uninsane.org
-
-## Using This Repo In Your Own Config
-
-this should be a pretty "standard" flake. just reference it, and import either
-- `nixosModules.sane` (for the modules)
-- `overlays.pkgs` (for the packages)
-
-or follow the instructions [here][NUR] to use it via the Nix User Repositories.
-
-[NUR]: https://nur.nix-community.org/
-
-## Layout
-- `doc/`
-  - instructions for tasks i find myself doing semi-occasionally in this repo.
-- `hosts/`
-  - the bulk of config which isn't factored with external use in mind.
-  - that is, if you were to add this repo to a flake.nix for your own use,
-    you won't likely be depending on anything in this directory.
-- `integrations/`
-  - code intended for consumption by external tools (e.g. the Nix User Repos)
-- `modules/`
-  - config which is gated behind `enable` flags, in similar style to nixpkgs'
-    `nixos/` directory.
-  - if you depend on this repo, it's most likely for something in this directory.
-- `nixpatches/`
-  - literally, diffs i apply atop upstream nixpkgs before performing further eval.
-- `overlays/`
-  - exposed via the `overlays` output in `flake.nix`.
-  - predominantly a list of `callPackage` directives.
-- `pkgs/`
-  - derivations for things not yet packaged in nixpkgs.
-  - derivations for things from nixpkgs which i need to `override` for some reason.
-  - inline code for wholly custom packages (e.g. `pkgs/additional/sane-scripts/` for CLI tools
-    that are highly specific to my setup).
-- `scripts/`
-  - scripts which aren't reachable on a deployed system, but may aid manual deployments
-- `secrets/`
-  - encrypted keys, API tokens, anything which one or more of my machines needs
-    read access to but shouldn't be world-readable.
-  - not much to see here
-- `templates/`
-  - exposed via the `templates` output in `flake.nix`.
-  - used to instantiate short-lived environments.
-  - used to auto-fill the boiler-plate portions of new packages.
-
-
-## Key Points of Interest
-
-i.e. you might find value in using these in your own config:
-
-- `modules/fs/`
-  - use this to statically define leafs and nodes anywhere in the filesystem,
-    not just inside `/nix/store`.
-  - e.g. specify that `/var/www` should be:
-    - owned by a specific user/group
-    - set to a specific mode
-    - symlinked to some other path
-    - populated with some statically-defined data
-    - populated according to some script
-    - created as a dependency of some service (e.g. `nginx`)
-  - values defined here are applied neither at evaluation time _nor_ at activation time.
-    - rather, they become systemd services.
-    - systemd manages dependencies
-    - e.g. link `/var/www -> /mnt/my-drive/www` only _after_ `/mnt/my-drive/www` appears)
-  - this is akin to using [Home Manager's][home-manager] file API -- the part which lets you
-    statically define `~/.config` files -- just with a different philosophy.
-- `modules/persist/`
-  - my alternative to the Impermanence module.
-  - this builds atop `modules/fs/` to achieve things stock impermanence can't:
-    - persist things to encrypted storage which is unlocked at login time (pam_mount).
-    - "persist" cache directories -- to free up RAM -- but auto-wipe them on mount
-      and encrypt them to ephemeral keys so they're unreadable post shutdown/unmount.
-- `modules/programs/`
-  - like nixpkgs' `programs` options, but allows both system-wide or per-user deployment.
-  - allows `fs` and `persist` config values to be gated behind program deployment:
-    - e.g. `/home/<user>/.mozilla/firefox` is persisted only for users who
-      `sane.programs.firefox.enableFor.user."<user>" = true;`
-  - allows aggressive sandboxing any program:
-    - `sane.programs.firefox.sandbox.method = "bwrap";  # sandbox with bubblewrap`
-    - `sane.programs.firefox.sandbox.whitelistWayland = true;  # allow it to render a wayland window`
-    - `sane.programs.firefox.sandbox.extraHomePaths = [ "Downloads" ];  # allow it read/write access to ~/Downloads`
-    - integrated with `fs` and `persist` modules so that programs' config files and persisted data stores are linked into the sandbox w/o any extra involvement.
-- `modules/users.nix`
-  - convenience layer atop the above modules so that you can just write
-    `fs.".config/git"` instead of `fs."/home/colin/.config/git"`
-
-some things in here could easily find broader use. if you would find benefit in
-them being factored out of my config, message me and we could work to make that happen.
-
-[home-manager]: https://github.com/nix-community/home-manager
-
-## Mirrors
-
-this repo exists in a few known locations:
-- primary: <https://git.uninsane.org/colin/nix-files>
-- mirror: <https://github.com/nix-community/nur-combined/tree/master/repos/colinsane>
-
-## Contact
-
-if you want to contact me for questions, or collaborate to split something useful into a shared repo, etc,
-you can reach me via any method listed [here](https://uninsane.org/about).
-patches, for this repo or any other i host, will be warmly welcomed in any manner you see fit:
-`git send-email`, DM'ing the patch over Matrix/Lemmy/ActivityPub/etc, even a literal PR where you
-link me to your own clone.

TODO.md

@@ -1,132 +1,21 @@
-## BUGS
+# features/tweaks
-- ringer (i.e. dino incoming call) doesn't prevent moby from sleeping
+- enable sshfs (deskto/lappy)
-- `nix` operations from lappy hang when `desko` is unreachable
+- set firefox default search engine
-  - could at least direct the cache to `http://desko-hn:5001`
+- iron out video drivers
 
-## REFACTORING:
+# cleanup
-- consolidate ~/dev and ~/ref
+- remove helpers from outputs section (use `let .. in`)
-  - ~/dev becomes a link to ~/ref/cat/mine
-- fold hosts/common/home/ssh.nix -> hosts/common/users/colin.nix
-
-### sops/secrets
-- rework secrets to leverage `sane.fs`
-- remove sops activation script as it's covered by my systemd sane.fs impl
-- user secrets could just use `gocryptfs`, like with ~/private?
-  - can gocryptfs support nested filesystems, each with different perms (for desko, moby, etc)?
-
-### roles
-- allow any host to take the role of `uninsane.org`
-  - will make it easier to test new services?
-
-### upstreaming
-- add updateScripts to all my packages in nixpkgs
-- REVIEW/integrate jellyfin dataDir config: <https://github.com/NixOS/nixpkgs/pull/233617>
-
-#### upstreaming to non-nixpkgs repos
-- gtk: build schemas even on cross compilation: <https://github.com/NixOS/nixpkgs/pull/247844>
 
 
-## IMPROVEMENTS:
+# speed up cross compiling
-### security/resilience
+   https://nixos.wiki/wiki/Cross_Compiling
-- validate duplicity backups!
+   https://nixos.wiki/wiki/NixOS_on_ARM
-- encrypt more ~ dirs (~/archives, ~/records, ..?)
+   overlays = [{ ... }: {
-  - best to do this after i know for sure i have good backups
+     nixpkgs.crossSystem.system = "aarch64-linux";
-- /mnt/desko/home, etc, shouldn't include secrets (~/private)
+   }];
-  - 95% of its use is for remote media access and stuff which isn't in VCS (~/records)
-- port all sane.programs to be sandboxed
-  - enforce that all `environment.packages` has a sandbox profile (or explicitly opts out)
-  - revisit "non-sandboxable" apps and check that i'm not actually just missing mountpoints
-    - LL_FS_RW=/ isn't enough -- need all mount points like `=/:/proc:/sys:...`.
-  - ensure non-bin package outputs are linked for sandboxed apps
-    - i.e. `outputs.man`, `outputs.debug`, `outputs.doc`, ...
-  - lock down dbus calls within the sandbox
-    - otherwise anyone can `systemd-run --user ...` to potentially escape a sandbox
-    - <https://github.com/flatpak/xdg-dbus-proxy>
-  - remove `.ssh` access from Firefox!
-    - limit access to `~/knowledge/secrets` through an agent that requires GUI approval, so a firefox exploit can't steal all my logins
-  - port sane-sandboxed to a compiled language (hare?)
-    - it adds like 50-70ms launch time _on my laptop_. i'd hate to know how much that is on the pinephone.
-  - remove /run/wrappers from the sandbox path
-    - they're mostly useless when using no-new-privs, just an opportunity to forget to specify deps
-- make dconf stuff less monolithic
-  - i.e. per-app dconf profiles for those which need it. possible static config.
-- canaries for important services
-  - e.g. daily email checks; daily backup checks
-  - integrate `nix check` into Gitea actions?
 
-### user experience
+# better secrets management? read:
-- xdg-desktop-portal shouldn't kill children on exit
+- decrypted at activation time: https://github.com/Mic92/sops-nix
-  - *maybe* a job for `setsid -f`?
+less promising:
-- replace starship prompt with something more efficient
+- https://christine.website/blog/nixos-encrypted-secrets-2021-01-20
-  - watch `forkstat`: it does way too much
+- git-crypt (https://github.com/bobbbay/dotfiles.git)
-- cleanup waybar so that it's not invoking playerctl every 2 seconds
-- install apps:
-  - display QR codes for WiFi endpoints: <https://linuxphoneapps.org/apps/noappid.wisperwind.wifi2qr/>
-  - shopping list (not in nixpkgs): <https://linuxphoneapps.org/apps/ro.hume.cosmin.shoppinglist/>
-  - offline Wikipedia (or, add to `wike`)
-  - offline docs viewer (gtk): <https://github.com/workbenchdev/Biblioteca>
-  - some type of games manager/launcher
-    - Gnome Highscore (retro games)?: <https://gitlab.gnome.org/World/highscore>
-  - better maps for mobile (Osmin (QtQuick)? Pure Maps (Qt/Kirigami)? Gnome Maps is improved in 45)
-  - note-taking app: <https://linuxphoneapps.org/categories/note-taking/>
-  - OSK overlay specifically for mobile gaming
-    - i.e. mock joysticks, for use with SuperTux and SuperTuxKart
-- install mobile-friendly games:
-  - Shattered Pixel Dungeon (nixpkgs `shattered-pixel-dungeon`; doesn't cross-compile b/c openjdk/libIDL) <https://github.com/ebolalex/shattered-pixel-dungeon>
-  - UnCiv (Civ V clone; nixpkgs `unciv`; doesn't cross-compile):  <https://github.com/yairm210/UnCiv>
-  - Simon Tatham's Puzzle Collection (not in nixpkgs) <https://git.tartarus.org/?p=simon/puzzles.git>
-  - Shootin Stars  (Godot; not in nixpkgs) <https://gitlab.com/greenbeast/shootin-stars>
-  - numberlink (generic name for Flow Free). not packaged in Nix
-  - Neverball (https://neverball.org/screenshots.php). nix: as `neverball`
-  - blurble (https://linuxphoneapps.org/games/app.drey.blurble/). nix: not as of 2024-02-05
-
-#### moby
-- fix cpuidle (gets better power consumption): <https://xnux.eu/log/077.html>
-- moby: tune keyboard layout
-- SwayNC:
-  - don't show MPRIS if no players detected
-    - this is a problem of playerctld, i guess
-  - add option to change audio output
-  - fix colors (red alert) to match overall theme
-- moby: tune GPS
-  - run only geoclue, and not gpsd, to save power?
-  - tune QGPS setting in eg25-control, for less jitter?
-  - direct mepo to prefer gpsd, with fallback to geoclue, for better accuracy?
-  - configure geoclue to do some smoothing?
-  - manually do smoothing, as some layer between mepo and geoclue/gpsd?
-- moby: show battery state on ssh login
-- moby: improve gPodder launch time
-- moby: theme GTK apps (i.e. non-adwaita styles)
-  - especially, make the menubar collapsible
-  - try Gradience tool specifically for theming adwaita? <https://linuxphoneapps.org/apps/com.github.gradienceteam.gradience/>
-
-#### non-moby
-- RSS: integrate a paywall bypass
-  - e.g. self-hosted [ladder](https://github.com/everywall/ladder) (like 12ft.io)
-- neovim: set up language server (lsp; rnix-lsp; nvim-lspconfig)
-- neovim: integrate LLMs
-- Helix: make copy-to-system clipboard be the default
-- firefox/librewolf: persist history
-  - just not cookies or tabs
-- package Nix/NixOS docs for Zeal
-  - install [doc-browser](https://github.com/qwfy/doc-browser)
-  - this supports both dash (zeal) *and* the datasets from <https://devdocs.io> (which includes nix!)
-  - install [devhelp](https://wiki.gnome.org/Apps/Devhelp)  (gnome)
-- have xdg-open parse `<repo:...> URIs (or adjust them so that it _can_ parse)
-- sane-bt-search: show details like 5.1 vs stereo, h264 vs h265
-  - maybe just color these "keywords" in all search results?
-- uninsane.org: make URLs relative to allow local use (and as offline homepage)
-- email: fix so that local mail doesn't go to junk
-  - git sendmail flow adds the DKIM signatures, but gets delivered locally w/o having the sig checked, so goes into Junk
-  - could change junk filter from "no DKIM success" to explicit "DKIM failed"
-
-### perf
-- debug nixos-rebuild times
-- add `pkgs.impure-cached.<foo>` package set to build things with ccache enabled
-  - every package here can be auto-generated, and marked with some env var so that it doesn't pollute the pure package set
-  - would be super handy for package prototyping!
-
-## NEW FEATURES:
-- migrate MAME cabinet to nix
-  - boot it from PXE from servo?
-- enable IPv6

configuration.nix

@@ -0,0 +1,25 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+# USEFUL COMMANDS:
+#   nix show-config
+#   nix eval --raw <expr>  => print an expression. e.g. nixpkgs.raspberrypifw prints store path to the package
+#   nix-option   ##  query options -- including their SET VALUE; similar to search: https://search.nixos.org/options
+#   nixos-rebuild switch --upgrade   ## pull changes from the nixos channel (e.g. security updates) and rebuild
+
+{ config, pkgs, ... }:
+
+{
+
+  # enable flake support.
+  # the real config root lives in flake.nix
+  nix = {
+    #package = pkgs.nixFlakes;
+    package = pkgs.nixUnstable;
+    extraOptions = ''
+      experimental-features = nix-command flakes
+    '';
+  };
+}
+

default.nix

@@ -1,9 +0,0 @@
-# limited, non-flake interface to this repo.
-# this file exposes the same view into `pkgs` which the flake would see when evaluated.
-#
-# the primary purpose of this file is so i can run `updateScript`s which expect
-# the root to be `default.nix`
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.appendOverlays [
-  (import ./overlays/all.nix)
-]

doc/adding-a-program.md

@@ -1,13 +0,0 @@
-to ship `pkgs.foo` on some host, either:
-- add it as an entry in `suggestedPrograms` to the appropriate category in `hosts/common/programs/assorted.nix`, or
-- `sane.programs.foo.enableFor.user.colin = true` in `hosts/by-name/myhost/default.nix`
-
-if the program needs customization (persistence, configs, secrets):
-- add a file for it at `hosts/common/programs/<foo>.nix`
-- set the options, `sane.programs.foo.{fs,persist}`
-
-if it's unclear what fs paths a program uses:
-- run one of these commands, launch the program, run it again, and `diff`:
-  - `du -x --apparent-size ~`
-  - `find ~ -xdev`
-- or, inspect the whole tmpfs root with `ncdu -x /`

flake.lock

@@ -1,327 +1,78 @@
 {
   "nodes": {
-    "flake-compat": {
+    "home-manager": {
-      "locked": {
-        "lastModified": 1688025799,
-        "narHash": "sha256-ktpB4dRtnksm9F5WawoIkEneh1nrEvuxb5lJFt1iOyw=",
-        "owner": "nix-community",
-        "repo": "flake-compat",
-        "rev": "8bf105319d44f6b9f0d764efa4fdef9f1cc9ba1c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-parts": {
       "inputs": {
-        "nixpkgs-lib": [
+        "nixpkgs": [
-          "nixpkgs-wayland",
-          "nix-eval-jobs",
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1701473968,
+        "lastModified": 1654113405,
-        "narHash": "sha256-YcVE5emp1qQ8ieHUnxt1wCZCC3ZfAS+SRRWZ2TMda7E=",
+        "narHash": "sha256-VpK+0QaWG2JRgB00lw77N9TjkE3ec0iMYIX1TzGpxa4=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "34fed993f1674c8d06d58b37ce1e0fe5eebcb9f5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "type": "github"
-      }
-    },
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "lib-aggregate": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs-lib": "nixpkgs-lib"
-      },
-      "locked": {
-        "lastModified": 1710184940,
-        "narHash": "sha256-FzYm4td3FJfzOAuEkCXt3KdUgZuA072OAQXqIq+IAMo=",
         "owner": "nix-community",
-        "repo": "lib-aggregate",
+        "repo": "home-manager",
-        "rev": "45b75bf534592c0c1c881a1c447f7fdb37a87eaf",
+        "rev": "ac2287df5a2d6f0a44bbcbd11701dbbf6ec43675",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "repo": "lib-aggregate",
+        "ref": "release-22.05",
+        "repo": "home-manager",
         "type": "github"
       }
     },
     "mobile-nixos": {
       "flake": false,
       "locked": {
-        "lastModified": 1694749521,
+        "lastModified": 1654281294,
-        "narHash": "sha256-MiVokKlpcJmfoGuWAMeW1En7gZ5hk0rCQArYm6P9XCc=",
+        "narHash": "sha256-hT2/u0jUOD4TFU6YyYt+5Gt+hjIeerLTyZG7ru79aDU=",
         "owner": "nixos",
         "repo": "mobile-nixos",
-        "rev": "d25d3b87e7f300d8066e31d792337d9cd7ecd23b",
+        "rev": "d798b0b34240b18a08c22f5c0ee1f59a3ce43c01",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "d25d3b87e7f300d8066e31d792337d9cd7ecd23b",
         "repo": "mobile-nixos",
         "type": "github"
       }
     },
-    "nix-eval-jobs": {
-      "inputs": {
-        "flake-parts": "flake-parts",
-        "nix-github-actions": "nix-github-actions",
-        "nixpkgs": "nixpkgs",
-        "treefmt-nix": "treefmt-nix"
-      },
-      "locked": {
-        "lastModified": 1705242886,
-        "narHash": "sha256-TLj334vRwFtSym3m+NnKcNCnKKPNoTC/TDZL40vmOso=",
-        "owner": "nix-community",
-        "repo": "nix-eval-jobs",
-        "rev": "6b03a93296faf174b97546fd573c8b379f523a8d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nix-eval-jobs",
-        "type": "github"
-      }
-    },
-    "nix-github-actions": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs-wayland",
-          "nix-eval-jobs",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1701208414,
-        "narHash": "sha256-xrQ0FyhwTZK6BwKhahIkUVZhMNk21IEI1nUcWSONtpo=",
-        "owner": "nix-community",
-        "repo": "nix-github-actions",
-        "rev": "93e39cc1a087d65bcf7a132e75a650c44dd2b734",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nix-github-actions",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703134684,
+        "lastModified": 1654275867,
-        "narHash": "sha256-SQmng1EnBFLzS7WSRyPM9HgmZP2kLJcPAz+Ug/nug6o=",
+        "narHash": "sha256-pt14ZE4jVPGvfB2NynGsl34pgXfOqum5YJNpDK4+b9E=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d6863cbcbbb80e71cecfc03356db1cda38919523",
+        "rev": "7a20c208aacf4964c19186dcad51f89165dc7ed0",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "id": "nixpkgs",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-22.05",
-        "repo": "nixpkgs",
+        "type": "indirect"
-        "type": "github"
       }
     },
-    "nixpkgs-lib": {
+    "nurpkgs": {
       "locked": {
-        "lastModified": 1710031547,
+        "lastModified": 1654367137,
-        "narHash": "sha256-pkUg3hOKuGWMGF9WEMPPN/G4pqqdbNGJQ54yhyQYDVY=",
+        "narHash": "sha256-xufB/+qvk/7rh7qrwZbzru1kTu8nsmNWBNQkYbdS84Q=",
         "owner": "nix-community",
-        "repo": "nixpkgs.lib",
+        "repo": "NUR",
-        "rev": "630ebdc047ca96d8126e16bb664c7730dc52f6e6",
+        "rev": "86ff2d098bce1d623232f4886027a1d61317b195",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "repo": "nixpkgs.lib",
+        "repo": "NUR",
-        "type": "github"
-      }
-    },
-    "nixpkgs-next-unpatched": {
-      "locked": {
-        "lastModified": 1710337169,
-        "narHash": "sha256-u2/74bhQuWykUZDWUIhHd6IpZiaQ0hSpTBbx0y9opkE=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "4ee0840ba2ecc50458ab1677d108afcd691f4815",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "staging-next",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-stable": {
-      "locked": {
-        "lastModified": 1710033658,
-        "narHash": "sha256-yiZiVKP5Ya813iYLho2+CcFuuHpaqKc/CoxOlANKcqM=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "b17375d3bb7c79ffc52f3538028b2ec06eb79ef8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "release-23.11",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-unpatched": {
-      "locked": {
-        "lastModified": 1710339354,
-        "narHash": "sha256-+P5ccUPiLouHexb8aJrUOVOIja9qm+fG57pgAu7uIRs=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "2dbc8f62d8af7a1ab962e4b20d12b25ddcb86ced",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "master",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-wayland": {
-      "inputs": {
-        "flake-compat": "flake-compat",
-        "lib-aggregate": "lib-aggregate",
-        "nix-eval-jobs": "nix-eval-jobs",
-        "nixpkgs": [
-          "nixpkgs-unpatched"
-        ]
-      },
-      "locked": {
-        "lastModified": 1710317949,
-        "narHash": "sha256-bwReMiWPA2wYBvKEMhO8pJcu+o+7ocy5hGkSoawTHu0=",
-        "owner": "nix-community",
-        "repo": "nixpkgs-wayland",
-        "rev": "771cb198c281db6918829651f194bf4db32e342d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs-wayland",
         "type": "github"
       }
     },
     "root": {
       "inputs": {
+        "home-manager": "home-manager",
         "mobile-nixos": "mobile-nixos",
-        "nixpkgs-next-unpatched": "nixpkgs-next-unpatched",
+        "nixpkgs": "nixpkgs",
-        "nixpkgs-unpatched": "nixpkgs-unpatched",
+        "nurpkgs": "nurpkgs"
-        "nixpkgs-wayland": "nixpkgs-wayland",
-        "sops-nix": "sops-nix",
-        "uninsane-dot-org": "uninsane-dot-org"
-      }
-    },
-    "sops-nix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs-unpatched"
-        ],
-        "nixpkgs-stable": "nixpkgs-stable"
-      },
-      "locked": {
-        "lastModified": 1710195194,
-        "narHash": "sha256-KFxCJp0T6TJOz1IOKlpRdpsCr9xsvlVuWY/VCiAFnTE=",
-        "owner": "Mic92",
-        "repo": "sops-nix",
-        "rev": "e52d8117b330f690382f1d16d81ae43daeb4b880",
-        "type": "github"
-      },
-      "original": {
-        "owner": "Mic92",
-        "repo": "sops-nix",
-        "type": "github"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "treefmt-nix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs-wayland",
-          "nix-eval-jobs",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1702979157,
-        "narHash": "sha256-RnFBbLbpqtn4AoJGXKevQMCGhra4h6G2MPcuTSZZQ+g=",
-        "owner": "numtide",
-        "repo": "treefmt-nix",
-        "rev": "2961375283668d867e64129c22af532de8e77734",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "treefmt-nix",
-        "type": "github"
-      }
-    },
-    "uninsane-dot-org": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs-unpatched"
-        ]
-      },
-      "locked": {
-        "lastModified": 1707981105,
-        "narHash": "sha256-YCU1eNslBHabjP+OCY+BxPycEFO9SRUts10MrN9QORE=",
-        "ref": "refs/heads/master",
-        "rev": "bb10cd8853d05191e4d62947d93687c462e92c30",
-        "revCount": 235,
-        "type": "git",
-        "url": "https://git.uninsane.org/colin/uninsane"
-      },
-      "original": {
-        "type": "git",
-        "url": "https://git.uninsane.org/colin/uninsane"
       }
     }
   },

flake.nix

@@ -1,643 +1,115 @@
-# FLAKE FEEDBACK:
+# docs:
-# - if flake inputs are meant to be human-readable, a human should be able to easily track them down given the URL.
+#   https://nixos.wiki/wiki/Flakes
-#   - this is not the case with registry URLs, like `nixpkgs/nixos-22.11`.
+#   https://serokell.io/blog/practical-nix-flakes
-#   - this is marginally the case with schemes like `github:nixos/nixpkgs`.
-#   - given the *existing* `git+https://` scheme, i propose expressing github URLs similarly:
-#     - `github+https://github.com/nixos/nixpkgs/tree/nixos-22.11`
-#     - this would allow for the same optimizations as today's `github:nixos/nixpkgs`, but without obscuring the source.
-#       a code reader could view the source being referenced simply by clicking the https:// portion of that URI.
-# - need some way to apply local patches to inputs.
-#
-#
-# DEVELOPMENT DOCS:
-# - Flake docs: <https://nixos.wiki/wiki/Flakes>
-# - Flake RFC: <https://github.com/tweag/rfcs/blob/flakes/rfcs/0049-flakes.md>
-#   - Discussion: <https://github.com/NixOS/rfcs/pull/49>
-# - <https://serokell.io/blog/practical-nix-flakes>
-#
-#
-# COMMON OPERATIONS:
-# - update a specific flake input:
-#   - `nix flake lock --update-input nixpkgs`
 
 {
-  # XXX: use the `github:` scheme instead of the more readable git+https: because it's *way* more efficient
-  # preferably, i would rewrite the human-readable https URLs to nix-specific github: URLs with a helper,
-  # but `inputs` is required to be a strict attrset: not an expression.
   inputs = {
-    # branch workflow:
+    nixpkgs.url = "nixpkgs/nixos-22.05";
-    # - daily:
+    # pkgs-telegram.url = "nixpkgs/33775ec9a2173a08e46edf9f46c9febadbf743e8";# 2022/04/18; telegram 3.7.3. fails: nix log /nix/store/y5kv47hnv55qknb6cnmpcyraicay79fx-telegram-desktop-3.7.3.drv: g++: fatal error: cannot execute '/nix/store/njk5sbd21305bhr7gwibxbbvgbx5lxvn-gcc-9.3.0/libexec/gcc/aarch64-unknown-linux-gnu/9.3.0/cc1plus': execv: No such file or directory
-    #   - nixos-unstable cut from master after enough packages have been built in caches.
-    # - every 6 hours:
-    #   - master auto-merged into staging and staging-next
-    #   - staging-next auto-merged into staging.
-    # - manually, approximately once per month:
-    #   - staging-next is cut from staging.
-    #   - staging-next merged into master.
-    #
-    # which branch to source from?
-    # - nixos-unstable: for everyday development; it provides good caching
-    # - master: temporarily if i'm otherwise cherry-picking lots of already-applied patches
-    # - staging-next: if testing stuff that's been PR'd into staging, i.e. base library updates.
-    # - staging: maybe if no staging-next -> master PR has been cut yet?
-    #
-    # <https://github.com/nixos/nixpkgs/tree/nixos-unstable>
-    # nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=nixos-unstable";
-    nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=master";
-    # nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=nixos-staging";
-    # nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=nixos-staging-next";
-    nixpkgs-next-unpatched.url = "github:nixos/nixpkgs?ref=staging-next";
-
-    nixpkgs-wayland = {
-      url = "github:nix-community/nixpkgs-wayland";
-      inputs.nixpkgs.follows = "nixpkgs-unpatched";
-    };
-
     mobile-nixos = {
-      # <https://github.com/nixos/mobile-nixos>
+      url = "github:nixos/mobile-nixos";
-      # only used for building disk images, not relevant after deployment
-      # TODO: replace with something else. commit `0f3ac0bef1aea70254a3bae35e3cc2561623f4c1`
-      # replaces the imageBuilder with a "new implementation from celun" and wildly breaks my use.
-      # pinning to d25d3b... is equivalent to holding at 2023-09-15
-      url = "github:nixos/mobile-nixos?ref=d25d3b87e7f300d8066e31d792337d9cd7ecd23b";
       flake = false;
     };
-    sops-nix = {
+    home-manager = {
-      # <https://github.com/Mic92/sops-nix>
+      url = "github:nix-community/home-manager/release-22.05";
-      # used to distribute secrets to my hosts
+      inputs.nixpkgs.follows = "nixpkgs";
-      url = "github:Mic92/sops-nix";
-      # inputs.nixpkgs.follows = "nixpkgs";
-      inputs.nixpkgs.follows = "nixpkgs-unpatched";
-    };
-    uninsane-dot-org = {
-      # provides the package to deploy <https://uninsane.org>, used only when building the servo host
-      url = "git+https://git.uninsane.org/colin/uninsane";
-      # inputs.nixpkgs.follows = "nixpkgs";
-      inputs.nixpkgs.follows = "nixpkgs-unpatched";
     };
+    nurpkgs.url = "github:nix-community/NUR";
   };
 
-  outputs = {
+  outputs = { self, nixpkgs, mobile-nixos, home-manager, nurpkgs }: {
-    self,
+    machines.uninsane = self.decl-bootable-machine { name = "uninsane"; system = "aarch64-linux"; };
-    nixpkgs-unpatched,
+    machines.desko = self.decl-bootable-machine { name = "desko"; system = "x86_64-linux"; };
-    nixpkgs-next-unpatched ? nixpkgs-unpatched,
+    machines.lappy = self.decl-bootable-machine { name = "lappy"; system = "x86_64-linux"; };
-    nixpkgs-wayland,
-    mobile-nixos,
-    sops-nix,
-    uninsane-dot-org,
-    ...
-  }@inputs:
-    let
-      inherit (builtins) attrNames elem listToAttrs map mapAttrs;
-      # redefine some nixpkgs `lib` functions to avoid the infinite recursion
-      # of if we tried to use patched `nixpkgs.lib` as part of the patching process.
-      mapAttrs' = f: set:
-        listToAttrs (map (attr: f attr set.${attr}) (attrNames set));
-      optionalAttrs = cond: attrs: if cond then attrs else {};
-      # mapAttrs but without the `name` argument
-      mapAttrValues = f: mapAttrs (_: f);
 
-      # rather than apply our nixpkgs patches as a flake input, do that here instead.
+    machines.moby =
-      # this (temporarily?) resolves the bad UX wherein a subflake residing in the same git
+      let machine = self.decl-machine {
-      # repo as the main flake causes the main flake to have an unstable hash.
+        name = "moby";
-      patchNixpkgs = variant: nixpkgs: (import ./nixpatches/flake.nix).outputs {
+        system = "aarch64-linux";
-        inherit variant nixpkgs;
+        extraModules = [
-        self = patchNixpkgs variant nixpkgs;
+          (import "${mobile-nixos}/lib/configuration.nix" {
+            device = "pine64-pinephone";
+          })
+        ];
+      };
+      in {
+        nixosConfiguration = machine;
+        img = machine.config.mobile.outputs.u-boot.disk-image;
       };
 
-      nixpkgs' = patchNixpkgs "master" nixpkgs-unpatched;
+    nixosConfigurations = builtins.mapAttrs (name: value: value.nixosConfiguration) self.machines;
-      nixpkgsCompiledBy = system: nixpkgs'.legacyPackages."${system}";
+    imgs = builtins.mapAttrs (name: value: value.img) self.machines;
 
-      evalHost = { name, local, target, light ? false, nixpkgs ? nixpkgs' }: nixpkgs.lib.nixosSystem {
+    decl-machine = { name, system, extraModules ? [], basePkgs ? nixpkgs }: let
-        system = target;
+      patchedPkgs = basePkgs.legacyPackages.${system}.applyPatches {
+        name = "nixpkgs-patched-uninsane";
+        src = basePkgs;
+        patches = [
+          # for mobile: allow phoc to scale to non-integer values
+          ./nixpatches/01-phosh-float-scale.patch
+          # for raspberry pi: allow building u-boot for rpi 4{,00}
+          ./nixpatches/02-rpi4-uboot.patch
+          ./nixpatches/03-whalebird-4.6.0.patch
+          ./nixpatches/04-dart-2.7.0.patch
+        ];
+      };
+      nixosSystem = import (patchedPkgs + "/nixos/lib/eval-config.nix");
+      in (nixosSystem {
+        inherit system;
+        specialArgs = { inherit home-manager; inherit nurpkgs; secrets = import ./secrets/default.nix; };
         modules = [
-          {
+          ./configuration.nix
-            nixpkgs.buildPlatform.system = local;
+          ./machines/${name}
-            # nixpkgs.config.replaceStdenv = { pkgs }: pkgs.ccacheStdenv;
+          (import ./helpers/set-hostname.nix name)
-          }
+          (self.overlaysModule system)
-          (optionalAttrs (local != target) {
+        ] ++ extraModules;
-            # XXX(2023/12/11): cache.nixos.org uses `system = ...` instead of `hostPlatform.system`, and that choice impacts the closure of every package.
+    });
-            # so avoid specifying hostPlatform.system on non-cross builds, so i can use upstream caches.
+
-            nixpkgs.hostPlatform.system = target;
+    # this produces a EFI-bootable .img file (GPT with / and /boot).
-          })
+    # after building this, steps are:
-          (optionalAttrs light {
+    #   run `btrfs-convert --uuid copy <device>`
-            sane.enableSlowPrograms = false;
+    #   boot, checkout this flake into /etc/nixos AND UPDATE THE UUIDS IT REFERENCES.
-          })
+    #   then `nixos-rebuild ...`
-          (import ./hosts/instantiate.nix { hostName = name; })
+    decl-img = { name, system, extraModules ? [] }: (
-          self.nixosModules.default
+      (self.decl-machine { inherit name; inherit system; extraModules = extraModules ++ [./image.nix]; })
-          self.nixosModules.passthru
+        .config.system.build.raw
-          {
+    );
+
+    decl-bootable-machine = { name, system }: {
+      nixosConfiguration = self.decl-machine { inherit name; inherit system; };
+      img = self.decl-img { inherit name; inherit system; };
+    };
+
+    overlaysModule = system: { config, pkgs, ...}: {
+      nixpkgs.config.allowUnfree = true;
+
       nixpkgs.overlays = [
-              self.overlays.passthru
+        #mobile-nixos.overlay
-              self.overlays.sane-all
+        nurpkgs.overlay
+        (next: prev: {
+          #### customized packages
+          # nixos-unstable pleroma is too far out-of-date for our db
+          pleroma = prev.callPackage ./pkgs/pleroma { };
+          # jackett doesn't allow customization of the bind address: this will probably always be here.
+          jackett = next.callPackage ./pkgs/jackett { pkgs = prev; };
+          # fix abrupt HDD poweroffs as during reboot. patching systemd requires rebuilding nearly every package.
+          # systemd = import ./pkgs/systemd { pkgs = prev; };
+
+          # patch rpi uboot with something that fixes USB HDD boot
+          ubootRaspberryPi4_64bit = next.callPackage ./pkgs/ubootRaspberryPi4_64bit { pkgs = prev; };
+
+          #### TEMPORARY NIXOS-UNSTABLE PACKAGES
+
+          # stable telegram doesn't build, so explicitly use the stable one.
+          # TODO: apply this specifically to the moby build?
+          # tdesktop = pkgs-telegram.legacyPackages.${system}.tdesktop;
+          tdesktop = nixpkgs.legacyPackages.${system}.tdesktop;
+
+          #### TEMPORARY: PACKAGES WAITING TO BE UPSTREAMED
+          whalebird = prev.callPackage ./pkgs/whalebird { };
+          kaiteki = prev.callPackage ./pkgs/kaiteki { };
+        })
       ];
-          }
-        ];
-      };
-    in {
-      nixosConfigurations = let
-        hosts = {
-          servo       = { name = "servo";  local = "x86_64-linux"; target = "x86_64-linux";  };
-          desko       = { name = "desko";  local = "x86_64-linux"; target = "x86_64-linux";  };
-          desko-light = { name = "desko";  local = "x86_64-linux"; target = "x86_64-linux";  light = true; };
-          lappy       = { name = "lappy";  local = "x86_64-linux"; target = "x86_64-linux";  };
-          lappy-light = { name = "lappy";  local = "x86_64-linux"; target = "x86_64-linux";  light = true; };
-          moby        = { name = "moby";   local = "x86_64-linux"; target = "aarch64-linux"; };
-          moby-light  = { name = "moby";   local = "x86_64-linux"; target = "aarch64-linux"; light = true; };
-          rescue      = { name = "rescue"; local = "x86_64-linux"; target = "x86_64-linux";  };
-        };
-        hostsNext = mapAttrs' (h: v: {
-          name = "${h}-next";
-          value = v // { nixpkgs = patchNixpkgs "staging-next" nixpkgs-next-unpatched; };
-        }) hosts;
-      in mapAttrValues evalHost (
-        hosts // hostsNext
-      );
-
-      # unofficial output
-      # this produces a EFI-bootable .img file (GPT with a /boot partition and a system (/ or /nix) partition).
-      # after building this:
-      #   - flash it to a bootable medium (SD card, flash drive, HDD)
-      #   - resize the root partition (use cfdisk)
-      #   - mount the part
-      #      - chown root:nixbld <part>/nix/store
-      #      - chown root:root -R <part>/nix/store/*
-      #      - chown root:root -R <part>/persist  # if using impermanence
-      #      - populate any important things (persist/, home/colin/.ssh, etc)
-      #   - boot
-      #   - if fs wasn't resized automatically, then `sudo btrfs filesystem resize max /`
-      #   - checkout this flake into /etc/nixos AND UPDATE THE FS UUIDS.
-      #   - `nixos-rebuild --flake './#<host>' switch`
-      imgs = mapAttrValues (host: host.config.system.build.img) self.nixosConfigurations;
-
-      # unofficial output
-      hostConfigs = mapAttrValues (host: host.config) self.nixosConfigurations;
-      hostSystems = mapAttrValues (host: host.config.system.build.toplevel) self.nixosConfigurations;
-      hostPkgs = mapAttrValues (host: host.config.system.build.pkgs) self.nixosConfigurations;
-      hostPrograms = mapAttrValues (host: mapAttrValues (p: p.package) host.config.sane.programs) self.nixosConfigurations;
-
-      patched.nixpkgs = nixpkgs';
-
-      overlays = {
-        # N.B.: `nix flake check` requires every overlay to take `final: prev:` at defn site,
-        #   hence the weird redundancy.
-        default = final: prev: self.overlays.pkgs final prev;
-        sane-all = final: prev: import ./overlays/all.nix final prev;
-        pkgs = final: prev: import ./overlays/pkgs.nix final prev;
-        pins = final: prev: import ./overlays/pins.nix final prev;
-        preferences = final: prev: import ./overlays/preferences.nix final prev;
-        passthru = final: prev:
-          let
-            mobile = (import "${mobile-nixos}/overlay/overlay.nix");
-            uninsane = uninsane-dot-org.overlays.default;
-            wayland = final: prev: {
-              # default is to dump the packages into `waylandPkgs` *and* the toplevel.
-              # but i just want the `waylandPkgs` set
-              inherit (nixpkgs-wayland.overlays.default final prev)
-                waylandPkgs
-                new-wayland-protocols  #< 2024/03/10: nixpkgs-wayland assumes this will be in the toplevel
-              ;
-            };
-          in
-            (mobile final prev)
-            // (uninsane final prev)
-            // (wayland final prev)
-          ;
-      };
-
-      nixosModules = rec {
-        default = sane;
-        sane = import ./modules;
-        passthru = { ... }: {
-          imports = [
-            sops-nix.nixosModules.sops
-          ];
-        };
-      };
-
-      # this includes both our native packages and all the nixpkgs packages.
-      legacyPackages =
-        let
-          allPkgsFor = sys: (nixpkgsCompiledBy sys).appendOverlays [
-            self.overlays.passthru self.overlays.pkgs
-          ];
-        in {
-          x86_64-linux = allPkgsFor "x86_64-linux";
-          aarch64-linux = allPkgsFor "aarch64-linux";
-        };
-
-      # extract only our own packages from the full set.
-      # because of `nix flake check`, we flatten the package set and only surface x86_64-linux packages.
-      packages = mapAttrs
-        (system: passthruPkgs: passthruPkgs.lib.filterAttrs
-          (name: pkg:
-            # keep only packages which will pass `nix flake check`, i.e. keep only:
-            # - derivations (not package sets)
-            # - packages that build for the given platform
-            (! elem name [ "feeds" "pythonPackagesExtensions" ])
-            && (passthruPkgs.lib.meta.availableOn passthruPkgs.stdenv.hostPlatform pkg)
-          )
-          (
-            # expose sane packages and chosen inputs (uninsane.org)
-            (import ./pkgs { pkgs = passthruPkgs; }) // {
-              inherit (passthruPkgs) uninsane-dot-org;
-            }
-          )
-        )
-        # self.legacyPackages;
-        {
-          x86_64-linux = (nixpkgsCompiledBy "x86_64-linux").appendOverlays [
-            self.overlays.passthru
-          ];
-        }
-      ;
-
-      apps."x86_64-linux" =
-        let
-          pkgs = self.legacyPackages."x86_64-linux";
-          sanePkgs = import ./pkgs { inherit pkgs; };
-          deployScript = host: addr: action: pkgs.writeShellScript "deploy-${host}" ''
-            set -e
-
-            host="${host}"
-            addr="${addr}"
-            action="${if action != null then action else ""}"
-            runOnTarget() {
-              # run the command ($@) on the machine we're deploying to.
-              # if that's a remote machine, then do it via ssh, else local shell.
-              if [ -n "$addr" ]; then
-                ssh "$addr" "$@"
-              else
-                "$@"
-              fi
-            }
-
-            nix build ".#nixosConfigurations.$host.config.system.build.toplevel" --out-link "./build/result-$host" "$@"
-            storePath="$(readlink ./build/result-$host)"
-
-            # mimic `nixos-rebuild --target-host`, in effect:
-            # - nix-copy-closure ...
-            # - nix-env --set ...
-            # - switch-to-configuration <boot|dry-activate|switch|test|>
-            # avoid the actual `nixos-rebuild` for a few reasons:
-            # - fewer nix evals
-            # - more introspectability and debuggability
-            # - sandbox friendliness (especially: `git` doesn't have to be run as root)
-
-            if [ -n "$addr" ]; then
-              sudo nix store sign -r -k /run/secrets/nix_serve_privkey "$storePath"
-              # add more `-v` for more verbosity (up to 5).
-              # builders-use-substitutes false: optimizes so that the remote machine doesn't try to get paths from its substituters.
-              #   we already have all paths here, and the remote substitution is slow to check and SERIOUSLY flaky on moby in particular.
-              nix copy -vv --option builders-use-substitutes false --to "ssh-ng://$addr" "$storePath"
-            fi
-
-            if [ -n "$action" ]; then
-              runOnTarget sudo nix-env -p /nix/var/nix/profiles/system --set "$storePath"
-              runOnTarget sudo "$storePath/bin/switch-to-configuration" "$action"
-            fi
-          '';
-          deployApp = host: addr: action: {
-            type = "app";
-            program = ''${deployScript host addr action}'';
-          };
-
-          # pkg updating.
-          # a cleaner alternative lives here: <https://discourse.nixos.org/t/how-can-i-run-the-updatescript-of-personal-packages/25274/2>
-          # mkUpdater :: [ String ] -> { type = "app"; program = path; }
-          mkUpdater = attrPath: {
-            type = "app";
-            program = let
-              pkg = pkgs.lib.getAttrFromPath attrPath sanePkgs;
-              strAttrPath = pkgs.lib.concatStringsSep "." attrPath;
-              commandArgv = pkg.updateScript.command or pkg.updateScript;
-              command = pkgs.lib.escapeShellArgs commandArgv;
-            in builtins.toString (pkgs.writeShellScript "update-${strAttrPath}" ''
-              export UPDATE_NIX_NAME=${pkg.name}
-              export UPDATE_NIX_PNAME=${pkg.pname}
-              export UPDATE_NIX_OLD_VERSION=${pkg.version}
-              export UPDATE_NIX_ATTR_PATH=${strAttrPath}
-              ${command}
-            '');
-          };
-          mkUpdatersNoAliases = opts: basePath: pkgs.lib.concatMapAttrs
-            (name: pkg:
-              if pkg.recurseForDerivations or false then {
-                "${name}" = mkUpdaters opts (basePath ++ [ name ]);
-              } else if pkg.updateScript or null != null then {
-                "${name}" = mkUpdater (basePath ++ [ name ]);
-              } else {}
-            )
-            (pkgs.lib.getAttrFromPath basePath sanePkgs);
-          mkUpdaters = { ignore ? [], flakePrefix ? [] }@opts: basePath:
-            let
-              updaters = mkUpdatersNoAliases opts basePath;
-              invokeUpdater = name: pkg:
-                let
-                  fullPath = basePath ++ [ name ];
-                  doUpdateByDefault = !builtins.elem fullPath ignore;
-
-                  # in case `name` has a `.` in it, we have to quote it
-                  escapedPath = builtins.map (p: ''"${p}"'') fullPath;
-                  updatePath = builtins.concatStringsSep "." (flakePrefix ++ escapedPath);
-                in pkgs.lib.optionalString doUpdateByDefault (
-                  pkgs.lib.escapeShellArgs [
-                    "nix" "run" ".#${updatePath}"
-                  ]
-                );
-            in {
-              type = "app";
-              # top-level app just invokes the updater of everything one layer below it
-              program = builtins.toString (pkgs.writeShellScript
-                (builtins.concatStringsSep "-" (flakePrefix ++ basePath))
-                (builtins.concatStringsSep
-                  "\n"
-                  (pkgs.lib.mapAttrsToList invokeUpdater updaters)
-                )
-              );
-            } // updaters;
-        in {
-          help = {
-            type = "app";
-            program = let
-              helpMsg = builtins.toFile "nixos-config-help-message" ''
-                commands:
-                - `nix run '.#help'`
-                  - show this message
-                - `nix run '.#update.pkgs'`
-                  - updates every package
-                - `nix run '.#update.feeds'`
-                  - updates metadata for all feeds
-                - `nix run '.#init-feed' <url>`
-                - `nix run '.#deploy.{desko,lappy,moby,servo}[-light|-test]' [nix args ...]`
-                  - build and deploy the host
-                - `nix run '.#preDeploy.{desko,lappy,moby,servo}[-light]' [nix args ...]`
-                  - copy closures to a host, but don't activate it
-                  - or `nix run '.#preDeploy'` to target all hosts
-                - `nix run '.#check'`
-                  - make sure all systems build; NUR evaluates
-                - `nix run '.#bench'`
-                  - benchmark the eval time of common targets this flake provides
-
-                specific build targets of interest:
-                - `nix build '.#imgs.rescue'`
-              '';
-            in builtins.toString (pkgs.writeShellScript "nixos-config-help" ''
-              cat ${helpMsg}
-              echo ""
-              echo "complete flake structure:"
-              nix flake show --option allow-import-from-derivation true
-            '');
-          };
-          # wrangle some names to get package updaters which refer back into the flake, but also conditionally ignore certain paths (e.g. sane.feeds).
-          # TODO: better design
-          update = rec {
-            _impl.pkgs.sane = mkUpdaters { flakePrefix = [ "update" "_impl" "pkgs" ]; ignore = [ [ "sane" "feeds" ] ]; } [ "sane" ];
-            pkgs = _impl.pkgs.sane;
-            _impl.feeds.sane.feeds = mkUpdaters { flakePrefix = [ "update" "_impl" "feeds" ]; } [ "sane" "feeds" ];
-            feeds = _impl.feeds.sane.feeds;
-          };
-
-          init-feed = {
-            type = "app";
-            program = "${pkgs.feeds.init-feed}";
-          };
-
-          deploy = {
-            desko       = deployApp "desko"       "desko" "switch";
-            desko-light = deployApp "desko-light" "desko" "switch";
-            lappy       = deployApp "lappy"       "lappy" "switch";
-            lappy-light = deployApp "lappy-light" "lappy" "switch";
-            moby        = deployApp "moby"        "moby"  "switch";
-            moby-light  = deployApp "moby-light"  "moby"  "switch";
-            moby-test   = deployApp "moby"        "moby"  "test";
-            servo       = deployApp "servo"       "servo" "switch";
-
-            # like `nixos-rebuild --flake . switch`
-            self        = deployApp "$(hostname)"       ""      "switch";
-            self-light  = deployApp "$(hostname)-light" ""      "switch";
-
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "deploy-all" ''
-              nix run '.#deploy.lappy'
-              nix run '.#deploy.moby'
-              nix run '.#deploy.desko'
-              nix run '.#deploy.servo'
-            '');
-          };
-          preDeploy = {
-            # build the host and copy the runtime closure to that host, but don't activate it.
-            desko       = deployApp "desko"       "desko" null;
-            desko-light = deployApp "desko-light" "desko" null;
-            lappy       = deployApp "lappy"       "lappy" null;
-            lappy-light = deployApp "lappy-light" "lappy" null;
-            moby        = deployApp "moby"        "moby"  null;
-            moby-light  = deployApp "moby-light"  "moby"  null;
-            servo       = deployApp "servo"       "servo" null;
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "predeploy-all" ''
-              # copy the -light variants first; this might be run while waiting on a full build. or the full build failed.
-              nix run '.#preDeploy.moby-light' -- "$@"
-              nix run '.#preDeploy.lappy-light' -- "$@"
-              nix run '.#preDeploy.desko-light' -- "$@"
-              nix run '.#preDeploy.lappy' -- "$@"
-              nix run '.#preDeploy.servo' -- "$@"
-              nix run '.#preDeploy.moby' -- "$@"
-              nix run '.#preDeploy.desko' -- "$@"
-            '');
-          };
-
-          sync = {
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "sync-all" ''
-              RC_lappy=$(nix run '.#sync.lappy' -- "$@")
-              RC_moby=$(nix run '.#sync.moby' -- "$@")
-              RC_desko=$(nix run '.#sync.desko' -- "$@")
-
-              echo "lappy: $RC_lappy"
-              echo "moby: $RC_moby"
-              echo "desko: $RC_desko"
-            '');
-          };
-
-          sync.desko = {
-            # copy music from servo to desko
-            # can run this from any device that has ssh access to desko and servo
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "sync-to-desko" ''
-              sudo mount /mnt/desko/home
-              ${pkgs.sane-scripts.sync-music}/bin/sane-sync-music --compat /mnt/servo/media/Music /mnt/desko/home/Music "$@"
-            '');
-          };
-
-          sync.lappy = {
-            # copy music from servo to lappy
-            # can run this from any device that has ssh access to lappy and servo
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "sync-to-lappy" ''
-              sudo mount /mnt/lappy/home
-              ${pkgs.sane-scripts.sync-music}/bin/sane-sync-music --compress --compat /mnt/servo/media/Music /mnt/lappy/home/Music "$@"
-            '');
-          };
-
-          sync.moby = {
-            # copy music from servo to moby
-            # can run this from any device that has ssh access to moby and servo
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "sync-to-moby" ''
-              sudo mount /mnt/moby/home
-              sudo mount /mnt/desko/home
-              ${pkgs.rsync}/bin/rsync -arv --exclude servo-macros /mnt/moby/home/Pictures/ /mnt/desko/home/Pictures/moby/
-              # N.B.: limited by network/disk -> reduce job count to improve pause/resume behavior
-              ${pkgs.sane-scripts.sync-music}/bin/sane-sync-music --compress --compat --jobs 4 /mnt/servo/media/Music /mnt/moby/home/Music "$@"
-            '');
-          };
-
-          check = {
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "check-all" ''
-              nix run '.#check.nur'
-              RC0=$?
-              nix run '.#check.hostConfigs'
-              RC1=$?
-              nix run '.#check.rescue'
-              RC2=$?
-              echo "nur: $RC0"
-              echo "hostConfigs: $RC1"
-              echo "rescue: $RC2"
-              exit $(($RC0 | $RC1 | $RC2))
-            '');
-          };
-
-          check.nur = {
-            # `nix run '.#check-nur'`
-            # validates that my repo can be included in the Nix User Repository
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "check-nur" ''
-              cd ${./.}/integrations/nur
-              NIX_PATH= NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1 nix-env -f . -qa \* --meta --xml \
-                --allowed-uris https://static.rust-lang.org \
-                --option restrict-eval true \
-                --option allow-import-from-derivation true \
-                --drv-path --show-trace \
-                -I nixpkgs=${nixpkgs-unpatched} \
-                -I nixpkgs-overlays=${./.}/hosts/common/nix/overlay \
-                -I ../../ \
-                | tee  # tee to prevent interactive mode
-            '');
-          };
-
-          check.hostConfigs = {
-            type = "app";
-            program = let
-              checkHost = host: let
-                shellHost = pkgs.lib.replaceStrings [ "-" ] [ "_" ] host;
-              in ''
-                nix build -v '.#nixosConfigurations.${host}.config.system.build.toplevel' --out-link ./build/result-${host} -j2 "$@"
-                RC_${shellHost}=$?
-              '';
-            in builtins.toString (pkgs.writeShellScript
-              "check-host-configs"
-              ''
-                # build minimally-usable hosts first, then their full image.
-                # this gives me a minimal image i can deploy or copy over, early.
-                ${checkHost "desko-light"}
-                ${checkHost "moby-light"}
-                ${checkHost "lappy-light"}
-
-                ${checkHost "desko"}
-                ${checkHost "lappy"}
-                ${checkHost "servo"}
-                ${checkHost "moby"}
-                ${checkHost "rescue"}
-
-                # still want to build the -light variants first so as to avoid multiple simultaneous webkitgtk builds
-                ${checkHost "desko-light-next"}
-                ${checkHost "moby-light-next"}
-
-                ${checkHost "desko-next"}
-                ${checkHost "lappy-next"}
-                ${checkHost "servo-next"}
-                ${checkHost "moby-next"}
-                ${checkHost "rescue-next"}
-
-                echo "desko: $RC_desko"
-                echo "lappy: $RC_lappy"
-                echo "servo: $RC_servo"
-                echo "moby: $RC_moby"
-                echo "rescue: $RC_rescue"
-
-                echo "desko-next: $RC_desko_next"
-                echo "lappy-next: $RC_lappy_next"
-                echo "servo-next: $RC_servo_next"
-                echo "moby-next: $RC_moby_next"
-                echo "rescue-next: $RC_rescue_next"
-
-                # i don't really care if the -next hosts fail. i build them mostly to keep the cache fresh/ready
-                exit $(($RC_desko | $RC_lappy | $RC_servo | $RC_moby | $RC_rescue))
-              ''
-            );
-          };
-
-          check.rescue = {
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "check-rescue" ''
-              nix build -v '.#imgs.rescue' --out-link ./build/result-rescue-img -j2
-            '');
-          };
-
-          bench = {
-            type = "app";
-            program = builtins.toString (pkgs.writeShellScript "bench" ''
-              doBench() {
-                attrPath="$1"
-                shift
-                echo -n "benchmarking eval of '$attrPath'... "
-                /run/current-system/sw/bin/time -f "%e sec" -o /dev/stdout \
-                  nix eval --no-eval-cache --quiet --raw ".#$attrPath" --apply 'result: if result != null then "" else "unexpected null"' $@ 2> /dev/null
-              }
-
-              if [ -n "$1" ]; then
-                doBench "$@"
-              else
-                doBench hostConfigs
-                doBench hostConfigs.lappy
-                doBench hostConfigs.lappy.sane.programs
-                doBench hostConfigs.lappy.sane.users.colin
-                doBench hostConfigs.lappy.sane.fs
-                doBench hostConfigs.lappy.environment.systemPackages
-              fi
-            '');
-          };
-        };
-
-      templates = {
-        env.python-data = {
-          # initialize with:
-          # - `nix flake init -t '/home/colin/dev/nixos/#env.python-data'`
-          # then enter with:
-          # - `nix develop`
-          path = ./templates/env/python-data;
-          description = "python environment for data processing";
-        };
-        pkgs.rust-inline = {
-          # initialize with:
-          # - `nix flake init -t '/home/colin/dev/nixos/#pkgs.rust-inline'`
-          path = ./templates/pkgs/rust-inline;
-          description = "rust package and development environment (inline rust sources)";
-        };
-        pkgs.rust = {
-          # initialize with:
-          # - `nix flake init -t '/home/colin/dev/nixos/#pkgs.rust'`
-          path = ./templates/pkgs/rust;
-          description = "rust package fit to ship in nixpkgs";
-        };
-        pkgs.make = {
-          # initialize with:
-          # - `nix flake init -t '/home/colin/dev/nixos/#pkgs.make'`
-          path = ./templates/pkgs/make;
-          description = "default Makefile-based derivation";
-        };
     };
   };
 }

helpers/gui/gnome.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # start gnome/gdm on boot
+  services.xserver.enable = true;
+  services.xserver.desktopManager.gnome.enable = true;
+  services.xserver.displayManager.gdm.enable = true;
+
+  # gnome does networking stuff with networkmanager
+  networking.useDHCP = false;
+  networking.networkmanager.enable = true;
+  networking.wireless.enable = lib.mkForce false;
+}

helpers/gui/i3.nix

@@ -0,0 +1,16 @@
+{ pkgs, ... }:
+{
+  environment.pathsToLink = [ "/libexec" ];  # patch for i3blocks to work
+  services.xserver.enable = true;
+  services.xserver.displayManager.defaultSession = "none+i3";
+  services.xserver.windowManager.i3 = {
+    enable = true;
+    extraPackages = with pkgs; [
+      dmenu
+      i3status
+      i3lock
+      i3blocks
+    ];
+  };
+}
+

helpers/gui/phosh.nix

@@ -0,0 +1,21 @@
+{ ... }:
+{
+  # docs: https://github.com/NixOS/nixpkgs/blob/nixos-22.05/nixos/modules/services/x11/desktop-managers/phosh.nix
+  services.xserver.desktopManager.phosh = {
+    enable = true;
+    user = "colin";
+    group = "users";
+    phocConfig = {
+      xwayland = "true";
+      # find default outputs by catting /etc/phosh/phoc.ini
+      outputs.DSI-1 = {
+        scale = 1.5;
+      };
+    };
+  };
+
+  environment.variables = {
+    # Qt apps won't always start unless this env var is set
+    QT_QPA_PLATFORM = "wayland";
+  };
+}

helpers/gui/plasma-mobile.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, lib, ... }:
+ 
+{
+  # start plasma-mobile on boot
+  services.xserver.enable = true;
+  services.xserver.desktopManager.plasma5.mobile.enable = true;
+  services.xserver.desktopManager.plasma5.mobile.installRecommendedSoftware = false;  # not all plasma5-mobile packages build for aarch64
+  services.xserver.displayManager.sddm.enable = true;
+ 
+  # Plasma does networking stuff with networkmanager, but nix configures the defaults itself
+  # networking.useDHCP = false;
+  # networking.networkmanager.enable = true;
+  # networking.wireless.enable = lib.mkForce false;
+}

helpers/gui/sway.nix

@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+ 
+# docs: https://nixos.wiki/wiki/Sway
+{
+  programs.sway = {
+    # we configure sway with home-manager, but this enable gets us e.g. opengl and fonts
+    enable = true;
+  };
+
+  # TODO: should be able to use SDDM to get interactive login
+  services.greetd = {
+    enable = true;
+    settings = rec {
+      initial_session = {
+        command = "${pkgs.sway}/bin/sway";
+        user = "colin";
+      };
+      default_session = initial_session;
+    };
+  };
+
+  # unlike other DEs, sway configures no audio stack
+  # administer with pw-cli, pw-mon, pw-top commands
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;  # ??
+    pulse.enable = true;
+  };
+}
+

helpers/hardware-x86_64.nix

@@ -0,0 +1,65 @@
+{ config, pkgs, lib, ... }:
+
+{
+  boot.initrd.availableKernelModules = [
+    "xhci_pci" "ahci" "sd_mod" "sdhci_pci"  # nixos-generate-config defaults
+    "usb_storage"   # rpi needed this to boot from usb storage, i think.
+    # "usbhid" "hid-generic"  # hopefully these will fix USB HID auto-sleep ?
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.initrd.supportedFilesystems = [ "ext4" "btrfs" "ext2" "ext3" "vfat" ];
+  # find more of these with sensors-detect
+  boot.kernelModules = [
+    "coretemp"
+    "kvm-intel"
+    "kvm-amd"  # desktop
+    "amdgpu"   # desktop
+  ];
+  boot.extraModulePackages = [ ];
+  boot.kernelParams = [ "boot.shell_on_fail" ];
+  boot.consoleLogLevel = 7;
+
+  # Use the systemd-boot EFI boot loader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.systemd-boot.configurationLimit = 40;  # keep this many generations
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  # enable cross compilation
+  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+  # nixpkgs.crossSystem.system = "aarch64-linux";
+
+  powerManagement.cpuFreqGovernor = "powersave";
+  hardware.enableRedistributableFirmware = true;
+  hardware.cpu.amd.updateMicrocode = true;    # desktop
+  hardware.cpu.intel.updateMicrocode = true;  # laptop
+  services.fwupd.enable = true;
+  # powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
+  powerManagement.powertop.enable = false;
+
+  hardware.opengl.extraPackages = [
+    # laptop
+    pkgs.intel-compute-runtime
+    pkgs.intel-media-driver  # new
+    pkgs.libvdpau-va-gl      # new
+    pkgs.vaapiIntel
+    # desktop
+    pkgs.rocm-opencl-icd
+    pkgs.rocm-opencl-runtime
+  ];
+  hardware.opengl.driSupport = true;
+  # For 32 bit applications
+  hardware.opengl.driSupport32Bit = true;
+
+  # TODO colin: does this *do* anything?
+  swapDevices = [ ];
+
+  # services.snapper.configs = {
+  #   root = {
+  #     subvolume = "/";
+  #     extraConfig = {
+  #       ALLOW_USERS = "colin";
+  #     };
+  #   };
+  # };
+  # services.snapper.snapshotInterval = "daily";
+}

helpers/home-manager-gen-colin.nix

@@ -0,0 +1,532 @@
+# docs:
+#   https://rycee.gitlab.io/home-manager/
+#   https://rycee.gitlab.io/home-manager/options.html
+#   man home-configuration.nix
+#
+
+# system is e.g. x86_64-linux
+# gui is "gnome", or null
+{ lib, pkgs, system, gui, extraPackages ? [] }: {
+  home.stateVersion = "21.11";
+  home.username = "colin";
+  home.homeDirectory = "/home/colin";
+  programs.home-manager.enable = true;  # this lets home-manager manage dot-files in user dirs, i think
+
+  # XDG defines things like ~/Desktop, ~/Downloads, etc.
+  # these clutter the home, so i mostly don't use them.
+  xdg.userDirs = {
+    enable = true;
+    createDirectories = false;  # on headless systems, most xdg dirs are noise
+    desktop = "$HOME/.xdg/Desktop";
+    documents = "$HOME/src";
+    download = "$HOME/tmp";
+    music = "$HOME/Music";
+    pictures = "$HOME/Pictures";
+    publicShare = "$HOME/.xdg/Public";
+    templates = "$HOME/.xdg/Templates";
+    videos = "$HOME/Videos";
+  };
+
+  programs.zsh = {
+    enable = true;
+    enableSyntaxHighlighting = true;
+    enableVteIntegration = true;
+    dotDir = ".config/zsh";
+
+    initExtraBeforeCompInit = ''
+      # p10k instant prompt
+      # run p10k configure to configure, but it can't write out its file :-(
+      POWERLEVEL9K_DISABLE_CONFIGURATION_WIZARD=true
+    '';
+
+    # prezto = oh-my-zsh fork; controls prompt, auto-completion, etc.
+    # see: https://github.com/sorin-ionescu/prezto
+    prezto = {
+      enable = true;
+      pmodules = [
+        "environment"
+        "terminal"
+        "editor"
+        "history"
+        "directory"
+        "spectrum"
+        "utility"
+        "completion"
+        "prompt"
+        "git"
+      ];
+      prompt = {
+        theme = "powerlevel10k";
+      };
+    };
+  };
+  programs.kitty.enable = true;
+  programs.git = {
+    enable = true;
+    userName = "colin";
+    userEmail = "colin@uninsane.org";
+  };
+
+  programs.vim = {
+    enable = true;
+    extraConfig = ''
+      " wtf vim project: NOBODY LIKES MOUSE FOR VISUAL MODE
+      set mouse-=a
+      " copy/paste to system clipboard
+      set clipboard=unnamedplus
+      " <tab> completion menu settings
+      set wildmenu
+      set wildmode=longest,list,full
+      " highlight all matching searches (using / and ?)
+      set hlsearch
+      " allow backspace to delete empty lines in insert mode
+      set backspace=indent,eol,start
+      " built-in syntax highlighting
+      syntax enable
+      " show line/col number in bottom right
+      set ruler
+      " highlight trailing space & related syntax errors (does this work?)
+      let c_space_errors=1
+      let python_space_errors=1
+    '';
+  };
+
+  # obtain these by running `dconf dump /` after manually customizing gnome
+  # TODO: fix "is not of type `GVariant value'"
+  # dconf.settings = lib.mkIf (gui == "gnome") {
+  #   gnome = {
+  #     # control alt-tab behavior
+  #     "org/gnome/desktop/wm/keybindings" = {
+  #       switch-applications = [ "<Super>Tab" ];
+  #       switch-applications-backward=[];
+  #       switch-windows=["<Alt>Tab"];
+  #       switch-windows-backward=["<Super><Alt>Tab"];
+  #     };
+  #     # idle power savings
+  #     "org/gnome/settings-deamon/plugins/power" = {
+  #       idle-brigthness = 50;
+  #       sleep-inactive-ac-type = "nothing";
+  #       sleep-inactive-battery-timeout = 5400;  # seconds
+  #     };
+  #     "org/gnome/shell" = {
+  #       favorite-apps = [
+  #         "org.gnome.Nautilus.desktop"
+  #         "firefox.desktop"
+  #         "kitty.desktop"
+  #         # "org.gnome.Terminal.desktop"
+  #       ];
+  #     };
+  #     "org/gnome/desktop/session" = {
+  #       # how long until considering a session idle (triggers e.g. screen blanking)
+  #       idle-delay = 900;
+  #     };
+  #     "org/gnome/desktop/interface" = {
+  #       text-scaling-factor = 1.25;
+  #     };
+  #     "org/gnome/desktop/media-handling" = {
+  #       # don't auto-mount inserted media
+  #       automount = false;
+  #       automount-open = false;
+  #     };
+  #   };
+  # };
+
+  # home.pointerCursor = {
+  #   package = pkgs.vanilla-dmz;
+  #   name = "Vanilla-DMZ";
+  # };
+
+  # taken from https://github.com/srid/nix-config/blob/705a70c094da53aa50cf560179b973529617eb31/nix/home/i3.nix
+  xsession.windowManager.i3 = lib.mkIf (gui == "i3") (
+  let
+    mod = "Mod4";
+  in {
+    enable = true;
+    config = {
+      modifier = mod;
+
+      fonts = {
+        names = [ "DejaVu Sans Mono" ];
+        style = "Bold Semi-Condensed";
+        size = 11.0;
+      };
+
+      # terminal = "kitty";
+      # terminal = "${pkgs.kitty}/bin/kitty";
+
+      keybindings = {
+        "${mod}+Return" = "exec ${pkgs.kitty}/bin/kitty";
+        "${mod}+p" = "exec ${pkgs.dmenu}/bin/dmenu_run";
+        "${mod}+x" = "exec sh -c '${pkgs.maim}/bin/maim -s | xclip -selection clipboard -t image/png'";
+        "${mod}+Shift+x" = "exec sh -c '${pkgs.i3lock}/bin/i3lock -c 222222 & sleep 5 && xset dpms force of'";
+
+        # Focus
+        "${mod}+j" = "focus left";
+        "${mod}+k" = "focus down";
+        "${mod}+l" = "focus up";
+        "${mod}+semicolon" = "focus right";
+
+        # Move
+        "${mod}+Shift+j" = "move left";
+        "${mod}+Shift+k" = "move down";
+        "${mod}+Shift+l" = "move up";
+        "${mod}+Shift+semicolon" = "move right";
+
+        # multi monitor setup
+        # "${mod}+m" = "move workspace to output DP-2";
+        # "${mod}+Shift+m" = "move workspace to output DP-5";
+      };
+
+      # bars = [
+      #   {
+      #     position = "bottom";
+      #     statusCommand = "${pkgs.i3status-rust}/bin/i3status-rs ${./i3status-rust.toml}";
+      #   }
+      # ];
+    };
+  });
+
+  wayland.windowManager.sway = lib.mkIf (gui == "sway") {
+    enable = true;
+    wrapperFeatures.gtk = true;
+    config = rec {
+      terminal = "${pkgs.kitty}/bin/kitty";
+      window.border = 3;  # pixel boundary between windows
+
+      # defaults; required for keybindings decl.
+      modifier = "Mod1";
+      # list of launchers: https://www.reddit.com/r/swaywm/comments/v39hxa/your_favorite_launcher/
+      # menu = "${pkgs.dmenu}/bin/dmenu_path";
+      menu = "${pkgs.fuzzel}/bin/fuzzel";
+      # menu = "${pkgs.albert}/bin/albert";
+      left = "h";
+      down = "j";
+      up = "k";
+      right = "l";
+      keybindings = {
+        "${modifier}+Return" = "exec ${terminal}";
+        "${modifier}+Shift+q" = "kill";
+        "${modifier}+d" = "exec ${menu}";
+
+        "${modifier}+${left}" = "focus left";
+        "${modifier}+${down}" = "focus down";
+        "${modifier}+${up}" = "focus up";
+        "${modifier}+${right}" = "focus right";
+
+        "${modifier}+Left" = "focus left";
+        "${modifier}+Down" = "focus down";
+        "${modifier}+Up" = "focus up";
+        "${modifier}+Right" = "focus right";
+
+        "${modifier}+Shift+${left}" = "move left";
+        "${modifier}+Shift+${down}" = "move down";
+        "${modifier}+Shift+${up}" = "move up";
+        "${modifier}+Shift+${right}" = "move right";
+
+        "${modifier}+Shift+Left" = "move left";
+        "${modifier}+Shift+Down" = "move down";
+        "${modifier}+Shift+Up" = "move up";
+        "${modifier}+Shift+Right" = "move right";
+
+        "${modifier}+b" = "splith";
+        "${modifier}+v" = "splitv";
+        "${modifier}+f" = "fullscreen toggle";
+        "${modifier}+a" = "focus parent";
+
+        "${modifier}+s" = "layout stacking";
+        "${modifier}+w" = "layout tabbed";
+        "${modifier}+e" = "layout toggle split";
+
+        "${modifier}+Shift+space" = "floating toggle";
+        "${modifier}+space" = "focus mode_toggle";
+
+        "${modifier}+1" = "workspace number 1";
+        "${modifier}+2" = "workspace number 2";
+        "${modifier}+3" = "workspace number 3";
+        "${modifier}+4" = "workspace number 4";
+        "${modifier}+5" = "workspace number 5";
+        "${modifier}+6" = "workspace number 6";
+        "${modifier}+7" = "workspace number 7";
+        "${modifier}+8" = "workspace number 8";
+        "${modifier}+9" = "workspace number 9";
+
+        "${modifier}+Shift+1" =
+          "move container to workspace number 1";
+        "${modifier}+Shift+2" =
+          "move container to workspace number 2";
+        "${modifier}+Shift+3" =
+          "move container to workspace number 3";
+        "${modifier}+Shift+4" =
+          "move container to workspace number 4";
+        "${modifier}+Shift+5" =
+          "move container to workspace number 5";
+        "${modifier}+Shift+6" =
+          "move container to workspace number 6";
+        "${modifier}+Shift+7" =
+          "move container to workspace number 7";
+        "${modifier}+Shift+8" =
+          "move container to workspace number 8";
+        "${modifier}+Shift+9" =
+          "move container to workspace number 9";
+
+        "${modifier}+Shift+minus" = "move scratchpad";
+        "${modifier}+minus" = "scratchpad show";
+
+        "${modifier}+Shift+c" = "reload";
+        "${modifier}+Shift+e" =
+          "exec swaynag -t warning -m 'You pressed the exit shortcut. Do you really want to exit sway? This will end your Wayland session.' -b 'Yes, exit sway' 'swaymsg exit'";
+
+        "${modifier}+r" = "mode resize";
+      } // {
+        # media keys
+        XF86MonBrightnessDown = ''exec "${pkgs.brightnessctl}/bin/brightnessctl set 2%-"'';
+        XF86MonBrightnessUp = ''exec "${pkgs.brightnessctl}/bin/brightnessctl set +2%"'';
+
+        XF86AudioRaiseVolume = "exec '${pkgs.pulsemixer}/bin/pulsemixer --change-volume +5'";
+        XF86AudioLowerVolume = "exec '${pkgs.pulsemixer}/bin/pulsemixer --change-volume -5'";
+        XF86AudioMute = "exec '${pkgs.pulsemixer}/bin/pulsemixer --toggle-mute'";
+
+      };
+
+      # mostly defaults:
+      bars = [{
+        mode = "dock";
+        hiddenState = "hide";
+        position = "top";
+        command = "${pkgs.waybar}/bin/waybar";
+        workspaceButtons = true;
+        workspaceNumbers = true;
+        statusCommand = "${pkgs.i3status}/bin/i3status";
+        fonts = {
+          names = [ "monospace" ];
+          size = 8.0;
+        };
+        trayOutput = "primary";
+        colors = {
+          background = "#000000";
+          statusline = "#ffffff";
+          separator = "#666666";
+          focusedWorkspace = {
+            border = "#4c7899";
+            background = "#285577";
+            text = "#ffffff";
+          };
+          activeWorkspace = {
+            border = "#333333";
+            background = "#5f676a";
+            text = "#ffffff";
+          };
+          inactiveWorkspace = {
+            border = "#333333";
+            background = "#222222";
+            text = "#888888";
+          };
+          urgentWorkspace = {
+            border = "#2f343a";
+            background = "#900000";
+            text = "#ffffff";
+          };
+          bindingMode = {
+            border = "#2f343a";
+            background = "#900000";
+            text = "#ffffff";
+          };
+        };
+      }];
+    };
+  };
+
+  programs.waybar = lib.mkIf (gui == "sway") {
+    enable = true;
+    # docs: https://github.com/Alexays/Waybar/wiki/Configuration
+    settings = {
+      mainBar = {
+        layer = "top";
+        height = 40;
+        modules-left = ["sway/workspaces" "sway/mode"];
+        modules-center = ["sway/window"];
+        modules-right = ["custom/mediaplayer" "clock" "cpu" "network"];
+        "sway/window" = {
+          max-length = 50;
+        };
+        # include song artist/title. source: https://www.reddit.com/r/swaywm/comments/ni0vso/waybar_spotify_tracktitle/
+        "custom/mediaplayer" = {
+          exec = pkgs.writeShellScript "waybar-mediaplayer" ''
+            player_status=$(${pkgs.playerctl}/bin/playerctl status 2> /dev/null)
+            if [ "$player_status" = "Playing" ]; then
+              echo "$(${pkgs.playerctl}/bin/playerctl metadata artist) - $(${pkgs.playerctl}/bin/playerctl metadata title)"
+            elif [ "$player_status" = "Paused" ]; then
+              echo " $(${pkgs.playerctl}/bin/playerctl metadata artist) - $(${pkgs.playerctl}/bin/playerctl metadata title)"
+            fi
+          '';
+          interval = 2;
+          format = "{}  ";
+          # return-type = "json";
+          on-click = "${pkgs.playerctl}/bin/playerctl play-pause";
+          on-scroll-up = "${pkgs.playerctl}/bin/playerctl next";
+          on-scroll-down = "${pkgs.playerctl}/bin/playerctl previous";
+        };
+        network = {
+          interval = 1;
+          format-ethernet = "{ifname}: {ipaddr}/{cidr}   up: {bandwidthUpBits} down: {bandwidthDownBits}";
+        };
+        cpu = {
+          format = "{usage}% ";
+          tooltip = false;
+        };
+        clock = {
+          format-alt = "{:%a, %d. %b  %H:%M}";
+        };
+      };
+    };
+    # style = ''
+    #   * {
+    #     border: none;
+    #     border-radius: 0;
+    #     font-family: Source Code Pro;
+    #   }
+    #   window#waybar {
+    #     background: #16191C;
+    #     color: #AAB2BF;
+    #   }
+    #   #workspaces button {
+    #     padding: 0 5px;
+    #   }
+    #   .custom-spotify {
+    #     padding: 0 10px;
+    #     margin: 0 4px;
+    #     background-color: #1DB954;
+    #     color: black;
+    #   }
+    # '';
+  };
+
+
+  programs.firefox = lib.mkIf (gui != null) {
+    enable = true;
+
+    profiles.default = {
+      bookmarks = {
+        fed_uninsane.url = "https://fed.uninsane.org/";
+        delightful.url = "https://delightful.club/";
+        crowdsupply.url = "https://www.crowdsupply.com/";
+        linux_phone_apps.url = "https://linuxphoneapps.org/mobile-compatibility/5/";
+        mempool.url = "https://jochen-hoenicke.de/queue";
+      };
+    };
+
+    # firefox profile support seems to be broken :shrug:
+    # profiles.other = {
+    #   id = 2;
+    # };
+
+    # NB: these must be manually enabled in the Firefox settings on first start
+    # extensions can be found here: https://gitlab.com/rycee/nur-expressions/-/blob/master/pkgs/firefox-addons/addons.json
+    extensions = [
+      pkgs.nur.repos.rycee.firefox-addons.bypass-paywalls-clean
+      pkgs.nur.repos.rycee.firefox-addons.metamask
+      pkgs.nur.repos.rycee.firefox-addons.i-dont-care-about-cookies
+      pkgs.nur.repos.rycee.firefox-addons.sidebery
+      pkgs.nur.repos.rycee.firefox-addons.sponsorblock
+      pkgs.nur.repos.rycee.firefox-addons.ublock-origin
+    ];
+  };
+
+  home.shellAliases = {
+    ":q" = "exit";
+    # common typos
+    "cd.." = "cd ..";
+    "cd../" = "cd ../";
+  };
+
+
+  home.packages = [
+    pkgs.btrfs-progs
+    pkgs.dig
+    pkgs.cryptsetup
+    pkgs.duplicity
+    pkgs.fatresize
+    pkgs.fd
+    pkgs.file
+    pkgs.gnumake
+    pkgs.gptfdisk
+    pkgs.hdparm
+    pkgs.htop
+    pkgs.iftop
+    pkgs.inetutils  # for telnet
+    pkgs.iotop
+    pkgs.iptables
+    pkgs.jq
+    pkgs.killall
+    pkgs.lm_sensors  # for sensors-detect
+    pkgs.lsof
+    pkgs.mix2nix
+    pkgs.netcat
+    pkgs.nixpkgs-review
+    pkgs.nixUnstable  # TODO: still needed on 22.05?
+    # pkgs.nixos-generators
+    # pkgs.nettools
+    pkgs.nmap
+    pkgs.obsidian
+    pkgs.parted
+    pkgs.pciutils
+    # pkgs.ponymix
+    pkgs.powertop
+    pkgs.pulsemixer
+    pkgs.python3
+    pkgs.ripgrep
+    pkgs.smartmontools
+    pkgs.snapper
+    pkgs.socat
+    pkgs.sudo
+    pkgs.usbutils
+    pkgs.wget
+    pkgs.wireguard-tools
+    pkgs.youtube-dl
+    pkgs.zola
+  ]
+  ++ (if gui != null then
+  [
+    # GUI only
+    pkgs.chromium
+    pkgs.clinfo
+    pkgs.element-desktop  # broken on phosh
+    pkgs.evince  # works on phosh
+    pkgs.font-manager
+    pkgs.gimp  # broken on phosh
+    pkgs.gnome.dconf-editor
+    pkgs.gnome.file-roller
+    pkgs.gnome.gnome-maps  # works on phosh
+    pkgs.gnome.nautilus
+    pkgs.gnome-podcasts
+    pkgs.gnome.gnome-terminal  # works on phosh
+    pkgs.inkscape
+    pkgs.kaiteki  # Pleroma client
+    pkgs.libreoffice-fresh  # XXX colin: maybe don't want this on mobile
+    pkgs.mesa-demos
+    pkgs.playerctl
+    pkgs.tdesktop  # broken on phosh
+    pkgs.vlc  # works on phosh
+    pkgs.whalebird # pleroma client. input is broken on phosh
+    pkgs.xterm  # broken on phosh
+  ] else [])
+  ++ (if gui == "sway" then
+  [
+    # TODO: move this to helpers/gui/sway.nix?
+    pkgs.swaylock
+    pkgs.swayidle
+    pkgs.wl-clipboard
+    pkgs.mako # notification daemon
+    # pkgs.dmenu # todo: use wofi?
+    # user stuff
+    # pkgs.pavucontrol
+  ] else [])
+  ++ (if gui != null && system == "x86_64-linux" then
+  [
+    # x86_64 only
+    pkgs.signal-desktop
+    pkgs.spotify
+    pkgs.discord
+  ] else [])
+  ++ extraPackages;
+}

helpers/set-hostname.nix

@@ -0,0 +1,4 @@
+hostName: { ... }:
+{
+  networking.hostName = hostName;
+}

helpers/universal/default.nix

@@ -0,0 +1,17 @@
+{ ... }:
+
+{
+  imports = [
+    ./fs.nix
+    ./home-manager.nix
+    ./nix-cache.nix
+    ./users.nix
+  ];
+
+  time.timeZone = "America/Los_Angeles";
+
+  environment.variables = {
+    EDITOR = "vim";
+  };
+}
+

helpers/universal/fs.nix

@@ -0,0 +1,25 @@
+{ pkgs, ... }:
+
+{
+  fileSystems."/mnt/media-uninsane" = {
+    # device = "sshfs#colin@uninsane.org:/opt/uninsane/media";
+    device = "colin@uninsane.org:/opt/uninsane/media";
+    fsType = "fuse.sshfs";
+    options = [
+      "x-systemd.automount"
+      "_netdev"
+      "user"
+      "idmap=user"
+      "transform_symlinks"
+      "identityfile=/home/colin/.ssh/id_ed25519"
+      "allow_other"
+      "default_permissions"
+      "uid=1000"
+      "gid=1000"
+    ];
+  };
+  environment.systemPackages = [
+    pkgs.sshfs-fuse
+  ];
+}
+

helpers/universal/home-manager.nix

@@ -0,0 +1,9 @@
+{ home-manager, config, pkgs, ... }:
+{
+  imports = [
+    home-manager.nixosModule
+  ];
+
+  home-manager.useGlobalPkgs = true;
+  home-manager.useUserPackages = true;
+}

helpers/universal/nix-cache.nix

@@ -0,0 +1,16 @@
+{ ... }:
+
+{
+  # use our own binary cache
+  nix.settings = {
+    substituters = [
+      "https://nixcache.uninsane.org"
+      "https://nix-community.cachix.org"
+      "https://cache.nixos.org/"
+    ];
+    trusted-public-keys = [
+      "nixcache.uninsane.org:r3WILM6+QrkmsLgqVQcEdibFD7Q/4gyzD9dGT33GP70="
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+}

helpers/universal/users.nix

@@ -0,0 +1,53 @@
+{ config, pkgs, lib, ... }:
+
+# installer docs: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/installation-device.nix
+{
+  # Users are exactly these specified here;
+  # old ones will be deleted (from /etc/passwd, etc) upon upgrade.
+  users.mutableUsers = false;
+
+  # docs: https://nixpkgs-manual-sphinx-markedown-example.netlify.app/generated/options-db.xml.html#users-users
+  users.users.colin = {
+    # sets group to "users" (?)
+    isNormalUser = true;
+    home = "/home/colin";
+    uid = 1000;
+    # XXX colin: this is what the installer has, but is it necessary?
+    # group = "users";
+    extraGroups = [
+      "wheel"
+      "nixbuild"
+      "networkmanager"
+      # phosh/mobile. XXX colin: unsure if necessary
+      "video"
+      "feedbackd"
+      "dialout" # required for modem access
+    ];
+    initialPassword = lib.mkDefault "";
+    shell = pkgs.zsh;
+    # shell = pkgs.bashInteractive;
+    # XXX colin: create ssh key for THIS user by logging in and running:
+    #   ssh-keygen -t ed25519
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGSDe/y0e9PSeUwYlMPjzhW0UhNsGAGsW3lCG3apxrD5 colin@colin.desktop"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG+MZ/l5d8g5hbxMB9ed1uyvhV85jwNrSVNVxb5ujQjw colin@lappy"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPU5GlsSfbaarMvDA20bxpSZGWviEzXGD8gtrIowc1pX colin@desko"
+      # TODO: should probably only let this authenticate to my server
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGCLCA9KbjXaXNNMJJvqbPO5KQQ64JCdG8sg88AfdKzi colin@moby"
+    ];
+  };
+
+  security.sudo = {
+    enable = true;
+    wheelNeedsPassword = false;
+  };
+
+  services.openssh = {
+    enable = true;
+    permitRootLogin = "no";
+    passwordAuthentication = false;
+  };
+
+  # TODO colin: move this somewhere else!
+  programs.vim.defaultEditor = true;
+}

hosts/README.md

@@ -1,7 +0,0 @@
-## directory structure
-- by-name/<hostname>: configuration which is evaluated _only_ for the given hostname
-- common/: configuration which applies to all hosts
-- modules/: nixpkgs-style modules which may be used by multiple hosts, but configured separately per host.
-    - ideally no module here has effect unless `enable`d
-        - however, `enable` may default to true
-        - and in practice some of these modules surely aren't fully "disableable"

hosts/by-name/desko/default.nix

@@ -1,64 +0,0 @@
-{ config, pkgs, ... }:
-{
-  imports = [
-    ./fs.nix
-  ];
-
-  # sane.guest.enable = true;
-
-  # services.distccd.enable = true;
-  # sane.programs.distcc.enableFor.user.guest = true;
-
-  # TODO: remove emulation, but need to fix nixos-rebuild to moby for that.
-  # sane.roles.build-machine.emulation = true;
-
-  sops.secrets.colin-passwd.neededForUsers = true;
-
-  sane.ports.openFirewall = true;  # for e.g. nix-serve
-
-  sane.roles.build-machine.enable = true;
-  sane.roles.client = true;
-  sane.roles.dev-machine = true;
-  sane.roles.pc = true;
-  sane.services.wg-home.enable = true;
-  sane.services.wg-home.ip = config.sane.hosts.by-name."desko".wg-home.ip;
-  sane.services.duplicity.enable = true;
-  sane.services.nixserve.secretKeyFile = config.sops.secrets.nix_serve_privkey.path;
-
-  sane.nixcache.substituters.desko = false;
-  sane.nixcache.remote-builders.desko = false;
-
-  sane.programs.sway.enableFor.user.colin = true;
-  sane.programs.iphoneUtils.enableFor.user.colin = true;
-  sane.programs.steam.enableFor.user.colin = true;
-
-  # sane.programs.devPkgs.enableFor.user.colin = true;
-
-  sane.programs."gnome.geary".config.autostart = true;
-  sane.programs.signal-desktop.config.autostart = true;
-
-  boot.loader.efi.canTouchEfiVariables = false;
-  sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
-
-  # needed to use libimobiledevice/ifuse, for iphone sync
-  services.usbmuxd.enable = true;
-
-  # don't enable wifi by default: it messes with connectivity.
-  systemd.services.iwd.enable = false;
-  systemd.services.wpa_supplicant.enable = false;
-
-  # default config: https://man.archlinux.org/man/snapper-configs.5
-  # defaults to something like:
-  #   - hourly snapshots
-  #   - auto cleanup; keep the last 10 hourlies, last 10 daylies, last 10 monthlys.
-  services.snapper.configs.nix = {
-    # TODO: for the impermanent setup, we'd prefer to just do /nix/persist,
-    # but that also requires setting up the persist dir as a subvol
-    SUBVOLUME = "/nix";
-    # TODO: ALLOW_USERS doesn't seem to work. still need `sudo snapper -c nix list`
-    ALLOW_USERS = [ "colin" ];
-  };
-
-  # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
-  system.stateVersion = "21.05";
-}

hosts/by-name/desko/fs.nix

@@ -1,21 +0,0 @@
-{ ... }:
-
-{
-  # increase /tmp space (defaults to 50% of RAM) for building large nix things.
-  # a cross-compiled kernel, particularly, will easily use 30+GB of tmp
-  fileSystems."/tmp".options = [ "size=64G" ];
-
-  fileSystems."/nix" = {
-    device = "/dev/disk/by-uuid/845d85bf-761d-431b-a406-e6f20909154f";
-    fsType = "btrfs";
-    options = [
-      "compress=zstd"
-      "defaults"
-    ];
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/5049-9AFD";
-    fsType = "vfat";
-  };
-}

hosts/by-name/lappy/default.nix

@@ -1,37 +0,0 @@
-{ config, pkgs, ... }:
-{
-  imports = [
-    ./fs.nix
-  ];
-
-  sane.roles.client = true;
-  sane.roles.dev-machine = true;
-  sane.roles.pc = true;
-  sane.services.wg-home.enable = true;
-  sane.services.wg-home.ip = config.sane.hosts.by-name."lappy".wg-home.ip;
-
-  # sane.guest.enable = true;
-  boot.loader.efi.canTouchEfiVariables = false;
-  sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
-
-  sane.programs.sway.enableFor.user.colin = true;
-  sane.programs."gnome.geary".config.autostart = true;
-  sane.programs.signal-desktop.config.autostart = true;
-  sane.programs.stepmania.enableFor.user.colin = true;
-
-  sops.secrets.colin-passwd.neededForUsers = true;
-
-  # default config: https://man.archlinux.org/man/snapper-configs.5
-  # defaults to something like:
-  #   - hourly snapshots
-  #   - auto cleanup; keep the last 10 hourlies, last 10 daylies, last 10 monthlys.
-  services.snapper.configs.nix = {
-    # TODO: for the impermanent setup, we'd prefer to just do /nix/persist,
-    # but that also requires setting up the persist dir as a subvol
-    SUBVOLUME = "/nix";
-    ALLOW_USERS = [ "colin" ];
-  };
-
-  # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
-  system.stateVersion = "21.05";
-}

hosts/by-name/lappy/xkb_mobile_normal_buttons

@@ -1,7 +0,0 @@
-xkb_keymap {
-	xkb_keycodes  { include "evdev+aliases(qwerty)"	};
-	xkb_types     { include "complete"	};
-	xkb_compat    { include "complete"	};
-	xkb_symbols   { include "pc+us+inet(evdev)"	};
-	xkb_geometry  { include "pc(pc105)"	};
-};

hosts/by-name/moby/bootloader.nix

@@ -1,12 +0,0 @@
-{ config, pkgs, ... }:
-{
-  # we need space in the GPT header to place tow-boot.
-  # only actually need 1 MB, but better to over-allocate than under-allocate
-  sane.image.extraGPTPadding = 16 * 1024 * 1024;
-  sane.image.firstPartGap = 0;
-  system.build.img = pkgs.runCommand "nixos_full-disk-image.img" {} ''
-    cp -v ${config.system.build.img-without-firmware}/nixos.img $out
-    chmod +w $out
-    dd if=${pkgs.tow-boot-pinephone}/Tow-Boot.noenv.bin of=$out bs=1024 seek=8 conv=notrunc
-  '';
-}

hosts/by-name/moby/default.nix

@@ -1,150 +0,0 @@
-# Pinephone
-# other setups to reference:
-# - <https://hamblingreen.gitlab.io/2022/03/02/my-pinephone-setup.html>
-#   - sxmo Arch user. lots of app recommendations
-#
-# wikis, resources, ...:
-# - Linux Phone Apps: <https://linuxphoneapps.org/>
-#   - massive mobile-friendly app database
-# - Mobian wiki: <https://wiki.mobian-project.org/doku.php?id=start>
-#   - recommended apps, chatrooms
-
-{ config, pkgs, lib, ... }:
-{
-  imports = [
-    ./bootloader.nix
-    ./fs.nix
-    ./gps.nix
-    ./kernel.nix
-    ./polyfill.nix
-  ];
-
-  sane.roles.client = true;
-  sane.roles.handheld = true;
-  sane.zsh.showDeadlines = false;  # unlikely to act on them when in shell
-  sane.services.wg-home.enable = true;
-  sane.services.wg-home.ip = config.sane.hosts.by-name."moby".wg-home.ip;
-
-  # for some reason desko -> moby deploys are super flaky when desko is also a nixcache (not true of desko -> lappy deploys, though!)
-  # > unable to download 'http://desko:5001/<hash>.narinfo': Server returned nothing (no headers, no data) (52)
-  sane.nixcache.substituters.desko = false;
-
-  # XXX colin: phosh doesn't work well with passwordless login,
-  # so set this more reliable default password should anything go wrong
-  users.users.colin.initialPassword = "147147";
-  # services.getty.autologinUser = "root";  # allows for emergency maintenance?
-
-  sops.secrets.colin-passwd.neededForUsers = true;
-
-  # sane.gui.sxmo.enable = true;
-  sane.programs.sway.enableFor.user.colin = true;
-  sane.programs.swaylock.enableFor.user.colin = false;  #< not usable on touch
-  sane.programs.schlock.enableFor.user.colin = true;
-  sane.programs.swayidle.config.actions.screenoff.delay = 300;
-  sane.programs.swayidle.config.actions.screenoff.enable = true;
-  sane.programs.sane-input-handler.enableFor.user.colin = true;
-  sane.programs.blueberry.enableFor.user.colin = false;  # bluetooth manager: doesn't cross compile!
-  sane.programs.fcitx5.enableFor.user.colin = false;  # does not cross compile
-  sane.programs.mercurial.enableFor.user.colin = false;  # does not cross compile
-  sane.programs.nvme-cli.enableFor.system = false;  # does not cross compile (libhugetlbfs)
-
-  # enabled for easier debugging
-  sane.programs.eg25-control.enableFor.user.colin = true;
-  sane.programs.rtl8723cs-wowlan.enableFor.user.colin = true;
-
-  # sane.programs.ntfy-sh.config.autostart = true;
-  sane.programs.dino.config.autostart = true;
-  # sane.programs.signal-desktop.config.autostart = true;  # TODO: enable once electron stops derping.
-  # sane.programs."gnome.geary".config.autostart = true;
-  # sane.programs.calls.config.autostart = true;
-
-  sane.programs.firefox.mime.priority = 300;  # prefer other browsers when possible
-  # HACK/TODO: make `programs.P.env.VAR` behave according to `mime.priority`
-  sane.programs.firefox.env = lib.mkForce {};
-  sane.programs.epiphany.env.BROWSER = "epiphany";
-
-  # note the .conf.d approach: using ~/.config/pipewire/pipewire.conf directly breaks all audio,
-  # presumably because that deletes the defaults entirely whereas the .conf.d approach selectively overrides defaults
-  sane.user.fs.".config/pipewire/pipewire.conf.d/10-fix-dino-mic-cutout.conf".symlink.text = ''
-    # config docs: <https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PipeWire#properties>
-    # useful to run `pw-top` to see that these settings are actually having effect,
-    # and `pw-metadata` to see if any settings conflict (e.g. max-quantum < min-quantum)
-    #
-    # restart pipewire after editing these files:
-    # - `systemctl --user restart pipewire`
-    # - pipewire users will likely stop outputting audio until they are also restarted
-    #
-    # there's seemingly two buffers for the mic (see: <https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/FAQ#pipewire-buffering-explained>)
-    # 1. Pipewire buffering out of the driver and into its own member.
-    # 2. Pipewire buffering into Dino.
-    # the latter is fixed at 10ms by Dino, difficult to override via runtime config.
-    # the former defaults low (e.g. 512 samples)
-    # this default configuration causes the mic to regularly drop out entirely for a couple seconds at a time during a call,
-    # presumably because the system can't keep up (pw-top shows incrementing counter in ERR column).
-    # `pw-metadata -n settings 0 clock.force-quantum 1024` reduces to about 1 error per second.
-    # `pw-metadata -n settings 0 clock.force-quantum 2048` reduces to 1 error every < 10s.
-    # pipewire default config includes `clock.power-of-two-quantum = true`
-    context.properties = {
-      default.clock.min-quantum = 2048
-      default.clock.max-quantum = 8192
-    }
-  '';
-
-  boot.loader.efi.canTouchEfiVariables = false;
-  # /boot space is at a premium. default was 20.
-  # even 10 can be too much
-  boot.loader.generic-extlinux-compatible.configurationLimit = 8;
-  # mobile.bootloader.enable = false;
-  # mobile.boot.stage-1.enable = false;
-  # boot.initrd.systemd.enable = false;
-  # boot.initrd.services.swraid.enable = false;  # attempt to fix dm_mod stuff
-
-  # hardware.firmware makes the referenced files visible to the kernel, for whenever a driver explicitly asks for them.
-  # these files are visible from userspace by following `/sys/module/firmware_class/parameters/path`
-  #
-  # mobile-nixos' /lib/firmware includes:
-  #   rtl_bt          (bluetooth)
-  #   anx7688-fw.bin  (USB-C chip: power negotiation, HDMI/dock)
-  #   ov5640_af.bin   (camera module)
-  # hardware.firmware = [ config.mobile.device.firmware ];
-  # hardware.firmware = [ pkgs.rtl8723cs-firmware ];
-  hardware.firmware = [
-    (pkgs.linux-firmware-megous.override {
-      # rtl_bt = false probably means no bluetooth connectivity.
-      # N.B.: DON'T RE-ENABLE without first confirming that wake-on-lan works during suspend (rtcwake).
-      # it seems the rtl_bt stuff ("bluetooth coexist") might make wake-on-LAN radically more flaky.
-      rtl_bt = false;
-    })
-  ];
-
-  system.stateVersion = "21.11";
-
-  # defined: https://www.freedesktop.org/software/systemd/man/machine-info.html
-  # XXX colin: not sure which, if any, software makes use of this
-  environment.etc."machine-info".text = ''
-    CHASSIS="handset"
-  '';
-
-  # enable rotation sensor
-  hardware.sensor.iio.enable = true;
-
-  # TODO: move elsewhere...
-  systemd.services.ModemManager.serviceConfig = {
-    # N.B.: the extra "" in ExecStart serves to force upstream ExecStart to be ignored
-    ExecStart = [ "" "${pkgs.modemmanager}/bin/ModemManager --debug" ];
-    # --debug sets DEBUG level logging: so reset
-    ExecStartPost = [ "${pkgs.modemmanager}/bin/mmcli --set-logging=INFO" ];
-  };
-
-  services.udev.extraRules = let
-    chmod = "${pkgs.coreutils}/bin/chmod";
-    chown = "${pkgs.coreutils}/bin/chown";
-  in ''
-    # make Pinephone flashlight writable by user.
-    # taken from postmarketOS: <repo:postmarketOS/pmaports:device/main/device-pine64-pinephone/60-flashlight.rules>
-    SUBSYSTEM=="leds", DEVPATH=="*/*:flash", RUN+="${chmod} g+w /sys%p/brightness /sys%p/flash_strobe", RUN+="${chown} :video /sys%p/brightness /sys%p/flash_strobe"
-
-    # make Pinephone front LEDs writable by user.
-    SUBSYSTEM=="leds", DEVPATH=="*/*:indicator", RUN+="${chmod} g+w /sys%p/brightness", RUN+="${chown} :video /sys%p/brightness"
-  '';
-}

hosts/by-name/moby/fs.nix

@@ -1,17 +0,0 @@
-{ ... }:
-
-{
-  fileSystems."/nix" = {
-    device = "/dev/disk/by-uuid/1f1271f8-53ce-4081-8a29-60a4a6b5d6f9";
-    fsType = "btrfs";
-    options = [
-      "compress=zstd"
-      "defaults"
-    ];
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/0299-F1E5";
-    fsType = "vfat";
-  };
-}

hosts/by-name/moby/gps.nix

@@ -1,69 +0,0 @@
-# pinephone GPS happens in EG25 modem
-# serial control interface to modem is /dev/ttyUSB2
-# after enabling GPS, readout is /dev/ttyUSB1
-#
-# minimal process to enable modem and GPS:
-# - `echo 1 > /sys/class/modem-power/modem-power/device/powered`
-# - `screen /dev/ttyUSB2 115200`
-#   - `AT+QGPSCFG="nmeasrc",1`
-#   - `AT+QGPS=1`
-# this process is automated by my `eg25-control` program and services (`eg25-control-powered`, `eg25-control-gps`)
-# - see the `modules/` directory further up this repository.
-#
-# now, something like `gpsd` can directly read from /dev/ttyUSB1,
-# or geoclue can query the GPS directly through modem-manager
-#
-# initial GPS fix can take 15+ minutes.
-# meanwhile, services like eg25-manager or eg25-control-freshen-agps can speed this up by uploading assisted GPS data to the modem.
-#
-# support/help:
-# - geoclue, gnome-maps
-#   - irc: #gnome-maps on irc.gimp.org
-#   - Matrix: #gnome-maps:gnome.org  (unclear if bridged to IRC)
-#
-# programs to pair this with:
-# - `satellite-gtk`: <https://codeberg.org/tpikonen/satellite>
-#   - shows/tracks which satellites the GPS is connected to; useful to understand fix characteristics
-# - `gnome-maps`: uses geoclue, has route planning
-# - `mepo`: uses gpsd, minimalist, flaky, and buttons are kinda hard to activate on mobile
-# - puremaps?
-# - osmin?
-#
-# known/outstanding bugs:
-# - `systemctl start eg25-control-gps` can the hang the whole system (2023/10/06)
-#   - i think it's actually `eg25-control-powered` which does this (started by the gps)
-#   - best guess is modem draws so much power at launch that other parts of the system see undervoltage
-#   - workaround is to hard power-cycle the system. the modem may not bring up after reboot: leave unpowered for 60s and boot again.
-#
-# future work:
-# - integrate with [wigle](https://www.wigle.net/) for offline equivalent to Mozilla Location Services
-
-{ config, lib, ... }:
-{
-  # test gpsd with `gpspipe -w -n 10 2> /dev/null | grep -m 1 TPV | jq '.lat, .lon' | tr '\n' ' '`
-  # ^ should return <lat> <long>
-  services.gpsd.enable = true;
-  services.gpsd.devices = [ "/dev/ttyUSB1" ];
-
-  # test geoclue2 by building `geoclue2-with-demo-agent`
-  # and running "${geoclue2-with-demo-agent}/libexec/geoclue-2.0/demos/where-am-i"
-  # note that geoclue is dbus-activated, and auto-stops after 60s with no caller
-  services.geoclue2.enable = true;
-  services.geoclue2.appConfig.where-am-i = {
-    # this is the default "agent", shipped by geoclue package: allow it to use location
-    isAllowed = true;
-    isSystem = false;
-    # XXX: setting users != [] might be causing `where-am-i` to time out
-    users = [
-      # restrict to only one set of users. empty array (default) means "allow any user to access geolocation".
-      (builtins.toString config.users.users.colin.uid)
-    ];
-  };
-  systemd.services.geoclue.after = lib.mkForce [];  #< defaults to network-online, but not all my sources require network
-  users.users.geoclue.extraGroups = [
-    "dialout"  # TODO: figure out if dialout is required. that's for /dev/ttyUSB1, but geoclue probably doesn't read that?
-  ];
-
-  sane.services.eg25-control.enable = true;
-  sane.programs.where-am-i.enableFor.user.colin = true;
-}

hosts/by-name/moby/kernel.nix

@@ -1,91 +0,0 @@
-{ pkgs, ... }:
-let
-  dmesg = "${pkgs.util-linux}/bin/dmesg";
-  grep = "${pkgs.gnugrep}/bin/grep";
-  modprobe = "${pkgs.kmod}/bin/modprobe";
-  ensureHWReady = ''
-    # common boot failure:
-    # blank screen (no backlight even), with the following log:
-    # ```syslog
-    # sun8i-dw-hdmi 1ee0000.hdmi: Couldn't get the HDMI PHY
-    # ...
-    # sun4i-drm display-engine: Couldn't bind all pipelines components
-    # ...
-    # sun8i-dw-hdmi: probe of 1ee0000.hdmi failed with error -17
-    # ```
-    #
-    # in particular, that `probe ... failed` occurs *only* on failed boots
-    # (the other messages might sometimes occur even on successful runs?)
-    #
-    # reloading the sun8i hdmi driver usually gets the screen on, showing boot text.
-    # then restarting display-manager.service gets us to the login.
-    #
-    # NB: the above log is default level. though less specific, there's a `err` level message that also signals this:
-    # sun4i-drm display-engine: failed to bind 1ee0000.hdmi (ops sun8i_dw_hdmi_ops [sun8i_drm_hdmi]): -17
-    # NB: this is the most common, but not the only, failure mode for `display-manager`.
-    # another error seems characterized by these dmesg logs, in which reprobing sun8i_drm_hdmi does not fix:
-    # ```syslog
-    # sun6i-mipi-dsi 1ca0000.dsi: Couldn't get the MIPI D-PHY
-    # sun4i-drm display-engine: Couldn't bind all pipelines components
-    # sun6i-mipi-dsi 1ca0000.dsi: Couldn't register our component
-    # ```
-
-    if (${dmesg} --kernel --level err --color=never --notime | ${grep} -q 'sun4i-drm display-engine: failed to bind 1ee0000.hdmi')
-    then
-      echo "reprobing sun8i_drm_hdmi"
-      # if a command here fails it errors the whole service, so prefer to log instead
-      ${modprobe} -r sun8i_drm_hdmi || echo "failed to unload sun8i_drm_hdmi"
-      ${modprobe} sun8i_drm_hdmi || echo "failed to load sub8i_drm_hdmi"
-    fi
-  '';
-in
-{
-  boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-megous;
-  # boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-manjaro;
-  # boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_latest;
-
-  # alternatively, apply patches directly to stock nixos kernel:
-  # boot.kernelPatches = manjaroPatches ++ [
-  #   (patchDefconfig kernelConfig)
-  # ];
-
-  # configure nixos to build a compressed kernel image, since it doesn't usually do that for aarch64 target.
-  # without this i run out of /boot space in < 10 generations
-  nixpkgs.hostPlatform.linux-kernel = {
-    # defaults:
-    name = "aarch64-multiplatform";
-    baseConfig = "defconfig";
-    DTB = true;
-    autoModules = true;
-    preferBuiltin = true;
-    # extraConfig = ...
-    # ^-- raspberry pi stuff: we don't need it.
-
-    # target = "Image";  # <-- default
-    target = "Image.gz";  # <-- compress the kernel image
-    # target = "zImage";  # <-- confuses other parts of nixos :-(
-  };
-
-  # disable proximity sensor.
-  # the filtering/calibration is bad that it causes the screen to go fully dark at times.
-  boot.blacklistedKernelModules = [ "stk3310" ];
-
-  boot.kernelParams = [
-    # without this some GUI apps fail: `DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory`
-    # this is because they can't allocate enough video ram.
-    # see related nixpkgs issue: <https://github.com/NixOS/nixpkgs/issues/260222>
-    # TODO(2023/12/03): remove once mesa 23.3.1 lands: <https://github.com/NixOS/nixpkgs/pull/265740>
-    #
-    # the default CMA seems to be 32M.
-    # i was running fine with 256MB from 2022/07-ish through 2022/12-ish, but then the phone quit reliably coming back from sleep (phosh): maybe a memory leak?
-    # `cat /proc/meminfo` to see CmaTotal/CmaFree if interested in tuning this.
-    "cma=512M"
-    # 2023/10/20: potential fix for the lima (GPU) timeout bugs:
-    # - <https://gitlab.com/postmarketOS/pmaports/-/issues/805#note_890467824>
-    "lima.sched_timeout_ms=2000"
-  ];
-
-  # services.xserver.displayManager.job.preStart = ensureHWReady;
-  # systemd.services.greetd.preStart = ensureHWReady;
-  systemd.services.unl0kr.preStart = ensureHWReady;
-}

hosts/by-name/moby/polyfill.nix

@@ -1,45 +0,0 @@
-# this file configures preferences per program, without actually enabling any programs.
-# the goal is to separate the place where we decide *what* to use (i.e. `sane.programs.firefox.enable = true` -- at the toplevel)
-# from where we specific how that thing should behave *if* it's in use.
-#
-# NixOS backgrounds:
-# - <https://github.com/NixOS/nixos-artwork>
-#   - <https://github.com/NixOS/nixos-artwork/issues/50>  (colorful; unmerged)
-#   - <https://github.com/NixOS/nixos-artwork/pull/60/files>  (desktop-oriented; clean; unmerged)
-# - <https://itsfoss.com/content/images/2023/04/nixos-tutorials.png>
-
-{ lib, pkgs, sane-lib, ... }:
-{
-  sane.programs.firefox.config = {
-    # compromise impermanence for the sake of usability
-    persistCache = "private";
-    persistData = "private";
-
-    # i don't do crypto stuff on moby
-    addons.ether-metamask.enable = false;
-    # sidebery UX doesn't make sense on small screen
-    addons.sidebery.enable = false;
-  };
-  sane.programs.swaynotificationcenter.config = {
-    backlight = "backlight";  # /sys/class/backlight/*backlight*/brightness
-  };
-
-  sane.programs.alacritty.config.fontSize = 9;
-
-  sane.programs.sway.config = {
-    font = "pango:monospace 10";
-    mod = "Mod1";  # prefer Alt
-    workspace_layout = "tabbed";
-  };
-
-  sane.programs.waybar.config = {
-    fontSize = 14;
-    height = 26;
-    persistWorkspaces = [ "1" "2" "3" "4" "5" ];
-    modules.media = false;
-    modules.network = false;
-    modules.perf = false;
-    modules.windowTitle = false;
-    # TODO: show modem state
-  };
-}

hosts/by-name/rescue/default.nix

@@ -1,18 +0,0 @@
-{ pkgs, ... }:
-{
-  imports = [
-    ./fs.nix
-  ];
-
-  boot.loader.efi.canTouchEfiVariables = false;
-  sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
-  sane.persist.enable = false;  # what we mean here is that the image is immutable; `/` is still tmpfs.
-  sane.nixcache.enable = false;  # don't want to be calling out to dead machines that we're *trying* to rescue
-
-  # auto-login at shell
-  services.getty.autologinUser = "colin";
-  # users.users.colin.initialPassword = "colin";
-
-  # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
-  system.stateVersion = "21.05";
-}

hosts/by-name/rescue/fs.nix

@@ -1,12 +0,0 @@
-{ ... }:
-
-{
-  fileSystems."/nix" = {
-    device = "/dev/disk/by-uuid/44445555-6666-7777-8888-999900001111";
-    fsType = "ext4";
-  };
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/2222-3333";
-    fsType = "vfat";
-  };
-}

hosts/by-name/servo/default.nix

@@ -1,57 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    ./fs.nix
-    ./net.nix
-    ./services
-  ];
-
-  sane.programs = {
-    # for administering services
-    freshrss.enableFor.user.colin = true;
-    matrix-synapse.enableFor.user.colin = true;
-    signaldctl.enableFor.user.colin = true;
-  };
-
-  sane.roles.build-machine.enable = true;
-  sane.zsh.showDeadlines = false;  # ~/knowledge doesn't always exist
-  sane.programs.consoleUtils.suggestedPrograms = [
-    "consoleMediaUtils"  # notably, for go2tv / casting
-    "pcConsoleUtils"
-    "sane-scripts.stop-all-servo"
-  ];
-  sane.services.dyn-dns.enable = true;
-  sane.services.wg-home.enable = true;
-  sane.services.wg-home.visibleToWan = true;
-  sane.services.wg-home.forwardToWan = true;
-  sane.services.wg-home.routeThroughServo = false;
-  sane.services.wg-home.ip = config.sane.hosts.by-name."servo".wg-home.ip;
-  sane.nixcache.substituters.servo = false;
-  sane.nixcache.substituters.desko = false;
-  sane.nixcache.remote-builders.desko = false;
-  sane.nixcache.remote-builders.servo = false;
-  # sane.services.duplicity.enable = true;  # TODO: re-enable after HW upgrade
-
-  # automatically log in at the virtual consoles.
-  # using root here makes sure we always have an escape hatch
-  services.getty.autologinUser = "root";
-
-  boot.loader.efi.canTouchEfiVariables = false;
-  sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
-
-  # both transmission and ipfs try to set different net defaults.
-  # we just use the most aggressive of the two here:
-  boot.kernel.sysctl = {
-    "net.core.rmem_max" = 4194304;  # 4MB
-  };
-
-  # This value determines the NixOS release from which the default
-  # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
-  # this value at the release version of the first install of this system.
-  # Before changing this value read the documentation for this option
-  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "21.11";
-}
-

hosts/by-name/servo/fs.nix

@@ -1,164 +0,0 @@
-# zfs docs:
-# - <https://nixos.wiki/wiki/ZFS>
-# - <repo:nixos/nixpkgs:nixos/modules/tasks/filesystems/zfs.nix>
-#
-# zfs check health: `zpool status`
-#
-# zfs pool creation (requires `boot.supportedFilesystems = [ "zfs" ];`
-# - 1. identify disk IDs: `ls -l /dev/disk/by-id`
-# - 2. pool these disks: `zpool create -f -m legacy pool raidz ata-ST4000VN008-2DR166_WDH0VB45 ata-ST4000VN008-2DR166_WDH17616 ata-ST4000VN008-2DR166_WDH0VC8Q ata-ST4000VN008-2DR166_WDH17680`
-#   - legacy documented: <https://superuser.com/questions/790036/what-is-a-zfs-legacy-mount-point>
-#
-# import pools: `zpool import pool`
-# show zfs datasets: `zfs list` (will be empty if haven't imported)
-# show zfs properties (e.g. compression): `zfs get all pool`
-# set zfs properties: `zfs set compression=on pool`
-{ ... }:
-
-{
-  # hostId: not used for anything except zfs guardrail?
-  #   [hex(ord(x)) for x in 'serv']
-  networking.hostId = "73657276";
-  boot.supportedFilesystems = [ "zfs" ];
-  # boot.zfs.enabled = true;
-  boot.zfs.forceImportRoot = false;
-  # scrub all zfs pools weekly:
-  services.zfs.autoScrub.enable = true;
-  boot.extraModprobeConfig = ''
-    # ZFS likes to use half the ram for its own cache and let the kernel push everything else to swap.
-    # so, reduce its cache size
-    # see: <https://askubuntu.com/a/1290387>
-    # see: <https://serverfault.com/a/1119083>
-    # see: <https://openzfs.github.io/openzfs-docs/Performance%20and%20Tuning/Module%20Parameters.html#zfs-arc-max>
-    # for all tunables, see: `man 4 zfs`
-    # to update these parameters without rebooting:
-    # - `echo '4294967296' | sane-sudo-redirect /sys/module/zfs/parameters/zfs_arc_max`
-    options zfs zfs_arc_max=4294967296
-  '';
-  # to be able to mount the pool like this, make sure to tell zfs to NOT manage it itself.
-  # otherwise local-fs.target will FAIL and you will be dropped into a rescue shell.
-  # - `zfs set mountpoint=legacy pool`
-  # if done correctly, the pool can be mounted before this `fileSystems` entry is created:
-  # - `sudo mount -t zfs pool /mnt/persist/pool`
-  fileSystems."/mnt/pool" = {
-    device = "pool";
-    fsType = "zfs";
-  };
-  # services.zfs.zed = ... # TODO: zfs can send me emails when disks fail
-  sane.programs.sysadminUtils.suggestedPrograms = [ "zfs" ];
-
-  sane.persist.stores."ext" = {
-    origin = "/mnt/pool/persist";
-    storeDescription = "external HDD storage";
-    defaultMethod = "bind";  #< TODO: change to "symlink"?
-  };
-
-  # increase /tmp space (defaults to 50% of RAM) for building large nix things.
-  # even the stock `nixpkgs.linux` consumes > 16 GB of tmp
-  fileSystems."/tmp".options = [ "size=32G" ];
-
-  fileSystems."/nix" = {
-    device = "/dev/disk/by-uuid/cc81cca0-3cc7-4d82-a00c-6243af3e7776";
-    fsType = "btrfs";
-    options = [
-      "compress=zstd"
-      "defaults"
-    ];
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/6EE3-4171";
-    fsType = "vfat";
-  };
-
-  # slow, external storage (for archiving, etc)
-  fileSystems."/mnt/usb-hdd" = {
-    device = "/dev/disk/by-uuid/aa272cff-0fcc-498e-a4cb-0d95fb60631b";
-    fsType = "btrfs";
-    options = [
-      "compress=zstd"
-      "defaults"
-    ];
-  };
-  sane.fs."/mnt/usb-hdd".mount = {};
-
-  sane.persist.sys.byStore.plaintext = [{
-    path = "/var/media";
-    method = "bind";  #< this HAS to be `bind` if we're going to persist the whole thing but create subdirs, as below.
-    user = "colin";
-    group = "media";
-    mode = "0755";
-  }];
-  sane.fs."/var/media/archive".dir = {};
-  # this is file.text instead of symlink.text so that it may be read over a remote mount (where consumers might not have any /nix/store/.../README.md path)
-  sane.fs."/var/media/archive/README.md".file.text = ''
-    this directory is for media i wish to remove from my library,
-    but keep for a short time in case i reverse my decision.
-    treat it like a system trash can.
-  '';
-  sane.fs."/var/media/Books".dir = {};
-  sane.fs."/var/media/Books/Audiobooks".dir = {};
-  sane.fs."/var/media/Books/Books".dir = {};
-  sane.fs."/var/media/Books/Visual".dir = {};
-  sane.fs."/var/media/collections".dir = {};
-  sane.fs."/var/media/datasets".dir = {};
-  sane.fs."/var/media/freeleech".dir = {};
-  sane.fs."/var/media/Music".dir = {};
-  sane.fs."/var/media/Pictures".dir = {};
-  sane.fs."/var/media/Videos".dir = {};
-  sane.fs."/var/media/Videos/Film".dir = {};
-  sane.fs."/var/media/Videos/Shows".dir = {};
-  sane.fs."/var/media/Videos/Talks".dir = {};
-
-  # this is file.text instead of symlink.text so that it may be read over a remote mount (where consumers might not have any /nix/store/.../README.md path)
-  sane.fs."/var/lib/uninsane/datasets/README.md".file.text = ''
-    this directory may seem redundant with ../media/datasets. it isn't.
-    this directory exists on SSD, allowing for speedy access to specific datasets when necessary.
-    the contents should be a subset of what's in ../media/datasets.
-  '';
-  # make sure large media is stored to the HDD
-  sane.persist.sys.byStore.ext = [
-    {
-      user = "colin";
-      group = "users";
-      mode = "0777";
-      path = "/var/media/Videos";
-    }
-    {
-      user = "colin";
-      group = "users";
-      mode = "0777";
-      path = "/var/media/freeleech";
-    }
-    {
-      user = "colin";
-      group = "users";
-      mode = "0775";
-      path = "/var/lib/uninsane/datasets";
-    }
-  ];
-
-  # btrfs doesn't easily support swapfiles
-  # swapDevices = [
-  #   { device = "/nix/persist/swapfile"; size = 4096; }
-  # ];
-
-  # this can be a partition. create with:
-  #   fdisk <dev>
-  #     n
-  #     <default partno>
-  #     <start>
-  #     <end>
-  #     t
-  #     <partno>
-  #     19  # set part type to Linux swap
-  #     w   # write changes
-  #   mkswap -L swap <part>
-  # swapDevices = [
-  #   {
-  #     label = "swap";
-  #     # TODO: randomEncryption.enable = true;
-  #   }
-  # ];
-}
-

hosts/by-name/servo/net.nix

@@ -1,184 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  portOpts = with lib; types.submodule {
-    options = {
-      visibleTo.ovpn = mkOption {
-        type = types.bool;
-        default = false;
-      };
-    };
-  };
-in
-{
-  options = with lib; {
-    sane.ports.ports = mkOption {
-      # add the `visibleTo.ovpn` option
-      type = types.attrsOf portOpts;
-    };
-  };
-
-  config = {
-    networking.domain = "uninsane.org";
-
-    sane.ports.openFirewall = true;
-    sane.ports.openUpnp = true;
-
-    # unless we add interface-specific settings for each VPN, we have to define nameservers globally.
-    # networking.nameservers = [
-    #   "1.1.1.1"
-    #   "9.9.9.9"
-    # ];
-
-    # services.resolved.extraConfig = ''
-    #   # docs: `man resolved.conf`
-    #   # DNS servers to use via the `wg-ovpns` interface.
-    #   #   i hope that from the root ns, these aren't visible.
-    #   DNS=46.227.67.134%wg-ovpns 192.165.9.158%wg-ovpns
-    #   FallbackDNS=1.1.1.1 9.9.9.9
-    # '';
-
-    # OVPN CONFIG (https://www.ovpn.com):
-    # DOCS: https://nixos.wiki/wiki/WireGuard
-    # if you `systemctl restart wireguard-wg-ovpns`, make sure to also restart any other services in `NetworkNamespacePath = .../ovpns`.
-    # TODO: why not create the namespace as a seperate operation (nix config for that?)
-    networking.wireguard.enable = true;
-    networking.wireguard.interfaces.wg-ovpns = let
-      ip = "${pkgs.iproute2}/bin/ip";
-      in-ns = "${ip} netns exec ovpns";
-      iptables = "${pkgs.iptables}/bin/iptables";
-      veth-host-ip = "10.0.1.5";
-      veth-local-ip = "10.0.1.6";
-      vpn-ip = "185.157.162.178";
-      # DNS = 46.227.67.134, 192.165.9.158, 2a07:a880:4601:10f0:cd45::1, 2001:67c:750:1:cafe:cd45::1
-      vpn-dns = "46.227.67.134";
-      bridgePort = port: proto: ''
-        ${in-ns} ${iptables} -A PREROUTING -t nat -p ${proto} --dport ${port} -m iprange --dst-range ${vpn-ip} \
-          -j DNAT --to-destination ${veth-host-ip}
-      '';
-      bridgeStatements = lib.foldlAttrs
-        (acc: port: portCfg: acc ++ (builtins.map (bridgePort port) portCfg.protocol))
-        []
-        config.sane.ports.ports;
-    in {
-      privateKeyFile = config.sops.secrets.wg_ovpns_privkey.path;
-      # wg is active only in this namespace.
-      # run e.g. ip netns exec ovpns <some command like ping/curl/etc, it'll go through wg>
-      #   sudo ip netns exec ovpns ping www.google.com
-      interfaceNamespace = "ovpns";
-      ips = [
-        "185.157.162.178/32"
-      ];
-      peers = [
-        {
-          publicKey = "SkkEZDCBde22KTs/Hc7FWvDBfdOCQA4YtBEuC3n5KGs=";
-          endpoint = "185.157.162.10:9930";
-          # alternatively: use hostname, but that presents bootstrapping issues (e.g. if host net flakes)
-          # endpoint = "vpn36.prd.amsterdam.ovpn.com:9930";
-          allowedIPs = [ "0.0.0.0/0" ];
-          # nixOS says this is important for keeping NATs active
-          persistentKeepalive = 25;
-          # re-executes wg this often. docs hint that this might help wg notice DNS/hostname changes.
-          # so, maybe that helps if we specify endpoint as a domain name
-          # dynamicEndpointRefreshSeconds = 30;
-          # when refresh fails, try it again after this period instead.
-          # TODO: not avail until nixpkgs upgrade
-          # dynamicEndpointRefreshRestartSeconds = 5;
-        }
-      ];
-      preSetup = ''
-        ${ip} netns add ovpns || echo "ovpns already exists"
-      '';
-      postShutdown = ''
-        ${in-ns} ip link del ovpns-veth-b || echo "couldn't delete ovpns-veth-b"
-        ${ip} link del ovpns-veth-a || echo "couldn't delete ovpns-veth-a"
-        ${ip} netns delete ovpns || echo "couldn't delete ovpns"
-        # restore rules/routes
-        ${ip} rule del from ${veth-host-ip} lookup ovpns pref 50 || echo "couldn't delete init -> ovpns rule"
-        ${ip} route del default via ${veth-local-ip} dev ovpns-veth-a proto kernel src ${veth-host-ip} metric 1002 table ovpns || echo "couldn't delete init -> ovpns route"
-        ${ip} rule add from all lookup local pref 0
-        ${ip} rule del from all lookup local pref 100
-      '';
-      postSetup = ''
-        # DOCS:
-        # - some of this approach is described here: <https://josephmuia.ca/2018-05-16-net-namespaces-veth-nat/>
-        # - iptables primer: <https://danielmiessler.com/study/iptables/>
-        # create veth pair
-        ${ip} link add ovpns-veth-a type veth peer name ovpns-veth-b
-        ${ip} addr add ${veth-host-ip}/24 dev ovpns-veth-a
-        ${ip} link set ovpns-veth-a up
-
-        # mv veth-b into the ovpns namespace
-        ${ip} link set ovpns-veth-b netns ovpns
-        ${in-ns} ip addr add ${veth-local-ip}/24 dev ovpns-veth-b
-        ${in-ns} ip link set ovpns-veth-b up
-
-        # make it so traffic originating from the host side of the veth
-        # is sent over the veth no matter its destination.
-        ${ip} rule add from ${veth-host-ip} lookup ovpns pref 50
-        # for traffic originating at the host veth to the WAN, use the veth as our gateway
-        # not sure if the metric 1002 matters.
-        ${ip} route add default via ${veth-local-ip} dev ovpns-veth-a proto kernel src ${veth-host-ip} metric 1002 table ovpns
-        # give the default route lower priority
-        ${ip} rule add from all lookup local pref 100
-        ${ip} rule del from all lookup local pref 0
-
-        # in order to access DNS in this netns, we need to route it to the VPN's nameservers
-        # - alternatively, we could fix DNS servers like 1.1.1.1.
-        ${in-ns} ${iptables} -A OUTPUT -t nat -p udp --dport 53 -m iprange --dst-range 127.0.0.53 \
-          -j DNAT --to-destination ${vpn-dns}:53
-      '' + (lib.concatStringsSep "\n" bridgeStatements);
-    };
-
-    # create a new routing table that we can use to proxy traffic out of the root namespace
-    # through the ovpns namespace, and to the WAN via VPN.
-    networking.iproute2.rttablesExtraConfig = ''
-      5 ovpns
-    '';
-    networking.iproute2.enable = true;
-
-
-    # HURRICANE ELECTRIC CONFIG:
-    # networking.sits = {
-    #   hurricane = {
-    #     remote = "216.218.226.238";
-    #     local = "192.168.0.5";
-    #     # local = "10.0.0.5";
-    #     # remote = "10.0.0.1";
-    #     # local = "10.0.0.22";
-    #     dev = "eth0";
-    #     ttl = 255;
-    #   };
-    # };
-    # networking.interfaces."hurricane".ipv6 = {
-    #   addresses = [
-    #     # mx.uninsane.org (publically routed /64)
-    #     {
-    #       address = "2001:470:b:465::1";
-    #       prefixLength = 128;
-    #     }
-    #     # client addr
-    #     # {
-    #     #   address = "2001:470:a:466::2";
-    #     #   prefixLength = 64;
-    #     # }
-    #   ];
-    #   routes = [
-    #     {
-    #       address = "::";
-    #       prefixLength = 0;
-    #       # via = "2001:470:a:466::1";
-    #     }
-    #   ];
-    # };
-
-    # # after configuration, we want the hurricane device to look like this:
-    # # hurricane: flags=209<UP,POINTOPOINT,RUNNING,NOARP>  mtu 1480
-    # #            inet6 2001:470:a:450::2  prefixlen 64  scopeid 0x0<global>
-    # #            inet6 fe80::c0a8:16  prefixlen 64  scopeid 0x20<link>
-    # #            sit  txqueuelen 1000  (IPv6-in-IPv4)
-    # # test with:
-    # #   curl --interface hurricane http://[2607:f8b0:400a:80b::2004]
-    # #   ping 2607:f8b0:400a:80b::2004
-  };
-}

hosts/by-name/servo/services/calibre.nix

@@ -1,34 +0,0 @@
-{ config, lib, ... }:
-
-let
-  cweb-cfg = config.services.calibre-web;
-  inherit (cweb-cfg) user group;
-  inherit (cweb-cfg.listen) ip port;
-  svc-dir = "/var/lib/${cweb-cfg.dataDir}";
-in
-# XXX: disabled because of runtime errors like:
-# > File "/nix/store/c7jqvx980nlg9xhxi065cba61r2ain9y-calibre-web-0.6.19/lib/python3.10/site-packages/calibreweb/cps/db.py", line 926, in speaking_language
-# > languages = self.session.query(Languages) \
-# > AttributeError: 'NoneType' object has no attribute 'query'
-lib.mkIf false
-{
-  sane.persist.sys.byStore.plaintext = [
-    { inherit user group; mode = "0700"; path = svc-dir; method = "bind"; }
-  ];
-
-  services.calibre-web.enable = true;
-  services.calibre-web.listen.ip = "127.0.0.1";
-  # XXX: externally populate `${svc-dir}/metadata.db` (once) from
-  #   <https://github.com/janeczku/calibre-web/blob/master/library/metadata.db>
-  # i don't know why you have to do this??
-  # services.calibre-web.options.calibreLibrary = svc-dir;
-
-  services.nginx.virtualHosts."calibre.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    locations."/" = {
-      proxyPass = "http://${ip}:${builtins.toString port}";
-    };
-  };
-  sane.dns.zones."uninsane.org".inet.CNAME."calibre" = "native";
-}

hosts/by-name/servo/services/coturn.nix

@@ -1,124 +0,0 @@
-# TURN/STUN NAT traversal service
-# commonly used to establish realtime calls with prosody, or possibly matrix/synapse
-#
-# - <https://github.com/coturn/coturn/>
-# - `man turnserver`
-# - config docs: <https://github.com/coturn/coturn/blob/master/examples/etc/turnserver.conf>
-#
-# N.B. during operation it's NORMAL to see "error 401".
-# during session creation:
-# - client sends Allocate request
-# - server replies error 401, providing a realm and nonce
-# - client uses realm + nonce + shared secret to construct an auth key & call Allocate again
-# - server replies Allocate Success Response
-# - source: <https://stackoverflow.com/a/66643135>
-#
-# N.B. this safest implementation routes all traffic THROUGH A VPN
-# - that adds a lot of latency, but in practice turns out to be inconsequential.
-#   i guess ICE allows clients to prefer the other party's lower-latency server, in practice?
-# - still, this is the "safe" implementation because STUN works with IP addresses instead of domain names:
-#   1. client A queries the STUN server to determine its own IP address/port.
-#   2. client A tells client B which IP address/port client A is visible on.
-#   3. client B contacts that IP address/port
-#   this only works so long as the IP address/port which STUN server sees client A on is publicly routable.
-#   that is NOT the case when the STUN server and client A are on the same LAN
-#   even if client A contacts the STUN server via its WAN address with port reflection enabled.
-#   hence, there's no obvious way to put the STUN server on the same LAN as either client and expect the rest to work.
-{ lib, ... }:
-let
-  # TODO: this range could be larger, but right now that's costly because each element is its own UPnP forward
-  # TURN port range (inclusive)
-  turnPortLow = 49152;
-  turnPortHigh = 49167;
-  turnPortRange = lib.range turnPortLow turnPortHigh;
-in
-{
-  sane.ports.ports = lib.mkMerge ([
-    {
-      "3478" = {
-        # this is the "control" port.
-        # i.e. no client data is forwarded through it, but it's where clients request tunnels.
-        protocol = [ "tcp" "udp" ];
-        # visibleTo.lan = true;
-        # visibleTo.wan = true;
-        visibleTo.ovpn = true;
-        description = "colin-stun-turn";
-      };
-      "5349" = {
-        # the other port 3478 also supports TLS/DTLS, but presumably clients wanting TLS will default 5349
-        protocol = [ "tcp" ];
-        # visibleTo.lan = true;
-        # visibleTo.wan = true;
-        visibleTo.ovpn = true;
-        description = "colin-stun-turn-over-tls";
-      };
-    }
-  ] ++ (builtins.map
-    (port: {
-      "${builtins.toString port}" = let
-        count = port - turnPortLow + 1;
-        numPorts = turnPortHigh - turnPortLow + 1;
-      in {
-        protocol = [ "tcp" "udp" ];
-        # visibleTo.lan = true;
-        # visibleTo.wan = true;
-        visibleTo.ovpn = true;
-        description = "colin-turn-${builtins.toString count}-of-${builtins.toString numPorts}";
-      };
-    })
-    turnPortRange
-  ));
-
-  services.nginx.virtualHosts."turn.uninsane.org" = {
-    # allow ACME to procure a cert via nginx for this domain
-    enableACME = true;
-  };
-  sane.dns.zones."uninsane.org".inet = {
-    # CNAME."turn" = "servo.wan";
-    # CNAME."turn" = "ovpns";
-    # CNAME."turn" = "native";
-    # XXX: SRV records have to point to something with a A/AAAA record; no CNAMEs
-    A."turn" = "%AOVPNS%";
-    # A."turn" = "%AWAN%";
-
-    SRV."_stun._udp" =                        "5 50 3478 turn";
-    SRV."_stun._tcp" =                        "5 50 3478 turn";
-    SRV."_stuns._tcp" =                       "5 50 5349 turn";
-    SRV."_turn._udp" =                        "5 50 3478 turn";
-    SRV."_turn._tcp" =                        "5 50 3478 turn";
-    SRV."_turns._tcp" =                       "5 50 5349 turn";
-  };
-
-  sane.derived-secrets."/var/lib/coturn/shared_secret.bin" = {
-    encoding = "base64";
-    # TODO: make this not globally readable
-    acl.mode = "0644";
-  };
-  sane.fs."/var/lib/coturn/shared_secret.bin".wantedBeforeBy = [ "coturn.service" ];
-
-  # provide access to certs
-  users.users.turnserver.extraGroups = [ "nginx" ];
-
-  services.coturn.enable = true;
-  services.coturn.realm = "turn.uninsane.org";
-  services.coturn.cert = "/var/lib/acme/turn.uninsane.org/fullchain.pem";
-  services.coturn.pkey = "/var/lib/acme/turn.uninsane.org/key.pem";
-  services.coturn.use-auth-secret = true;
-  services.coturn.static-auth-secret-file = "/var/lib/coturn/shared_secret.bin";
-  services.coturn.lt-cred-mech = true;
-  services.coturn.min-port = turnPortLow;
-  services.coturn.max-port = turnPortHigh;
-  # services.coturn.secure-stun = true;
-  services.coturn.extraConfig = lib.concatStringsSep "\n" [
-    "verbose"
-    # "Verbose"  #< even MORE verbosity than "verbose"
-    # "no-multicast-peers"  # disables sending to IPv4 broadcast addresses (e.g. 224.0.0.0/3)
-    "listening-ip=10.0.1.5"
-    # "external-ip=185.157.162.178/10.0.1.5"
-    "external-ip=185.157.162.178"
-    # "listening-ip=10.78.79.51"  # can be specified multiple times; omit for *
-    # "external-ip=97.113.128.229/10.78.79.51"
-    # "external-ip=97.113.128.229"
-    # "mobility"  # "mobility with ICE (MICE) specs support" (?)
-  ];
-}

hosts/by-name/servo/services/cryptocurrencies/bitcoin.nix

@@ -1,83 +0,0 @@
-# as of 2023/12/02: complete blockchain is 530 GiB (on-disk size may be larger)
-#
-# ports:
-# - 8333: for node-to-node communications
-# - 8332: rpc (client-to-node)
-#
-# rpc setup:
-# - generate a password
-#   - use: <https://github.com/bitcoin/bitcoin/blob/master/share/rpcauth/rpcauth.py>
-#     (rpcauth.py is not included in the `'.#bitcoin'` package result)
-#   - `wget https://raw.githubusercontent.com/bitcoin/bitcoin/master/share/rpcauth/rpcauth.py`
-#   - `python ./rpcauth.py colin`
-#   - copy the hash here. it's SHA-256, so safe to be public.
-#   - add "rpcuser=colin" and "rpcpassword=<output>" to secrets/servo/bitcoin.conf  (i.e. ~/.bitcoin/bitcoin.conf)
-#     - bitcoin.conf docs: <https://github.com/bitcoin/bitcoin/blob/master/doc/bitcoin-conf.md>
-# - validate with `bitcoin-cli -netinfo`
-{ config, lib, pkgs, sane-lib, ... }:
-let
-  # wrapper to run bitcoind with the tor onion address as externalip (computed at runtime)
-  _bitcoindWithExternalIp = with pkgs; writeShellScriptBin "bitcoind" ''
-    externalip="$(cat /var/lib/tor/onion/bitcoind/hostname)"
-    exec ${bitcoind}/bin/bitcoind "-externalip=$externalip" "$@"
-  '';
-  # the package i provide to services.bitcoind ends up on system PATH, and used by other tools like clightning.
-  # therefore, even though services.bitcoind only needs `bitcoind` binary, provide all the other bitcoin-related binaries (notably `bitcoin-cli`) as well:
-  bitcoindWithExternalIp = with pkgs; symlinkJoin {
-    name = "bitcoind-with-external-ip";
-    paths = [ _bitcoindWithExternalIp bitcoind ];
-  };
-in
-{
-  sane.persist.sys.byStore.ext = [
-    { user = "bitcoind-mainnet"; group = "bitcoind-mainnet"; path = "/var/lib/bitcoind-mainnet"; method = "bind"; }
-  ];
-
-  # sane.ports.ports."8333" = {
-  #   # this allows other nodes and clients to download blocks from me.
-  #   protocol = [ "tcp" ];
-  #   visibleTo.wan = true;
-  #   description = "colin-bitcoin";
-  # };
-
-  services.tor.relay.onionServices.bitcoind = {
-    version = 3;
-    map = [{
-      # by default tor will route public tor port P to 127.0.0.1:P.
-      # so if this port is the same as clightning would natively use, then no further config is needed here.
-      # see: <https://2019.www.torproject.org/docs/tor-manual.html.en#HiddenServicePort>
-      port = 8333;
-      # target.port; target.addr;  #< set if tor port != clightning port
-    }];
-    # allow "tor" group (i.e. bitcoind-mainnet) to read /var/lib/tor/onion/bitcoind/hostname
-    settings.HiddenServiceDirGroupReadable = true;
-  };
-
-  services.bitcoind.mainnet = {
-    enable = true;
-    package = bitcoindWithExternalIp;
-    rpc.users.colin = {
-      # see docs at top of file for how to generate this
-      passwordHMAC = "30002c05d82daa210550e17a182db3f3$6071444151281e1aa8a2729f75e3e2d224e9d7cac3974810dab60e7c28ffaae4";
-    };
-    extraConfig = ''
-      # don't load the wallet, and disable wallet RPC calls
-      disablewallet=1
-      # proxy all outbound traffic through Tor
-      proxy=127.0.0.1:9050
-    '';
-  };
-
-  users.users.bitcoind-mainnet.extraGroups = [ "tor" ];
-
-  systemd.services.bitcoind-mainnet.serviceConfig.RestartSec = "30s";  #< default is 0
-
-  sane.users.colin.fs.".bitcoin/bitcoin.conf" = sane-lib.fs.wantedSymlinkTo config.sops.secrets."bitcoin.conf".path;
-  sops.secrets."bitcoin.conf" = {
-    mode = "0600";
-    owner = "colin";
-    group = "users";
-  };
-
-  sane.programs.bitcoind.enableFor.user.colin = true;  # for debugging/administration: `bitcoin-cli`
-}

hosts/by-name/servo/services/cryptocurrencies/clightning-sane/clightning-sane

@@ -1,766 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p "python3.withPackages (ps: [ ps.pyln-client ])"
-
-# pyln-client docs: <https://github.com/ElementsProject/lightning/tree/master/contrib/pyln-client>
-# terminology:
-# - "scid": "Short Channel ID", e.g. 123456x7890x0
-#   from this id, we can locate the actual channel, its peers, and its parameters
-
-import argparse
-import logging
-import math
-import sys
-import time
-
-from concurrent.futures import ThreadPoolExecutor
-from dataclasses import dataclass
-from enum import Enum
-
-from pyln.client import LightningRpc, Millisatoshi, RpcError
-
-logger = logging.getLogger(__name__)
-
-RPC_FILE = "/var/lib/clightning/bitcoin/lightning-rpc"
-# CLTV (HLTC delta) of the final hop
-# set this too low and you might get inadvertent channel closures (?)
-CLTV = 18
-
-# for every sequentally failed transaction, delay this much before trying again.
-# note that the initial route building process can involve 10-20 "transient" failures, as it discovers dead channels.
-TX_FAIL_BACKOFF = 0.8
-MAX_SEQUENTIAL_JOB_FAILURES = 200
-
-class LoopError(Enum):
-    """ error when trying to loop sats, or when unable to calculate a route for the loop """
-    TRANSIENT = "TRANSIENT"  # try again, we'll maybe find a different route
-    NO_ROUTE = "NO_ROUTE"
-
-class RouteError(Enum):
-    """ error when calculated a route """
-    HAS_BASE_FEE = "HAS_BASE_FEE"
-    NO_ROUTE = "NO_ROUTE"
-
-class Metrics:
-    looped_msat: int = 0
-    sendpay_fail: int = 0
-    sendpay_succeed: int = 0
-    own_bad_channel: int = 0
-    no_route: int = 0
-    in_ch_unsatisfiable: int = 0
-
-    def __repr__(self) -> str:
-        return f"looped:{self.looped_msat}, tx:{self.sendpay_succeed}, tx_fail:{self.sendpay_fail}, own_bad_ch:{self.own_bad_channel}, no_route:{self.no_route}, in_ch_restricted:{self.in_ch_unsatisfiable}"
-
-@dataclass
-class TxBounds:
-    max_msat: int
-    min_msat: int = 0
-
-    def __repr__(self) -> str:
-        return f"TxBounds({self.min_msat} <= msat <= {self.max_msat})"
-
-    def is_satisfiable(self) -> bool:
-        return self.min_msat <= self.max_msat
-
-    def raise_max_to_be_satisfiable(self) -> "Self":
-        if self.max_msat < self.min_msat:
-            logger.debug(f"raising max_msat to be consistent: {self.max_msat} -> {self.min_msat}")
-            return TxBounds(self.min_msat, self.min_msat)
-        return TxBounds(min_msat=self.min_msat, max_msat=self.max_msat)
-
-    def intersect(self, other: "TxBounds") -> "Self":
-        return TxBounds(
-            min_msat=max(self.min_msat, other.min_msat),
-            max_msat=min(self.max_msat, other.max_msat),
-        )
-
-    def restrict_to_htlc(self, ch: "LocalChannel", why: str = "") -> "Self":
-        """
-        apply min/max HTLC size restrictions of the given channel.
-        """
-        if ch:
-            why = why or ch.directed_scid_to_me
-        if why: why = f"{why}: "
-
-        new_min, new_max = self.min_msat, self.max_msat
-        if ch.htlc_minimum_to_me > self.min_msat:
-            new_min = ch.htlc_minimum_to_me
-            logger.debug(f"{why}raising min_msat due to HTLC requirements: {self.min_msat} -> {new_min}")
-        if ch.htlc_maximum_to_me < self.max_msat:
-            new_max = ch.htlc_maximum_to_me
-            logger.debug(f"{why}lowering max_msat due to HTLC requirements: {self.max_msat} -> {new_max}")
-        return TxBounds(min_msat=new_min, max_msat=new_max)
-
-    def restrict_to_zero_fees(self, ch: "LocalChannel"=None, base: int=0, ppm: int=0, why:str = "") -> "Self":
-        """
-        restrict tx size such that PPM fees are zero.
-        if the channel has a base fee, then `max_msat` is forced to 0.
-        """
-        if ch:
-            why = why or ch.directed_scid_to_me
-            self = self.restrict_to_zero_fees(base=ch.to_me["base_fee_millisatoshi"], ppm=ch.to_me["fee_per_millionth"], why=why)
-
-        if why: why = f"{why}: "
-
-        new_max = self.max_msat
-        ppm_max = math.ceil(1000000 / ppm) - 1 if ppm != 0 else new_max
-        if ppm_max < new_max:
-            logger.debug(f"{why}decreasing max_msat due to fee ppm: {new_max} -> {ppm_max}")
-            new_max = ppm_max
-
-        if base != 0:
-            logger.debug(f"{why}free route impossible: channel has base fees")
-            new_max = 0
-
-        return TxBounds(min_msat=self.min_msat, max_msat=new_max)
-
-
-class LocalChannel:
-    def __init__(self, channels: list, rpc: "RpcHelper"):
-        assert 0 < len(channels) <= 2, f"unexpected: channel count: {channels}"
-        out = None
-        in_ = None
-        for c in channels:
-            if c["source"] == rpc.self_id:
-                assert out is None, f"unexpected: multiple channels from self: {channels}"
-                out = c
-            if c["destination"] == rpc.self_id:
-                assert in_ is None, f"unexpected: multiple channels to self: {channels}"
-                in_ = c
-
-        # assert out is not None, f"no channel from self: {channels}"
-        # assert in_ is not None, f"no channel to self: {channels}"
-
-        if out and in_:
-            assert out["destination"] == in_["source"], f"channel peers are asymmetric?! {channels}"
-            assert out["short_channel_id"] == in_["short_channel_id"], f"channel ids differ?! {channels}"
-
-        self.from_me = out
-        self.to_me = in_
-        self.remote_node = rpc.node(self.remote_peer)
-        self.peer_ch = rpc.peerchannel(self.scid, self.remote_peer)
-        self.forwards_from_me = rpc.rpc.listforwards(out_channel=self.scid, status="settled")["forwards"]
-
-    def __repr__(self) -> str:
-        return self.to_str(with_scid=True, with_bal_ratio=True, with_cost=False, with_ppm_theirs=False)
-
-    def to_str(
-        self,
-        with_peer_id:bool = False,
-        with_scid:bool = False,
-        with_bal_msat:bool = False,
-        with_bal_ratio:bool = False,
-        with_cost:bool = False,
-        with_ppm_theirs:bool = False,
-        with_ppm_mine:bool = False,
-        with_profits:bool = True,
-        with_payments:bool = False,
-    ) -> str:
-        base_flag = "*" if not self.online or self.base_fee_to_me != 0 else ""
-        alias = f"({self.remote_alias}){base_flag}"
-        peerid = f" {self.remote_peer}" if with_peer_id else ""
-        scid = f"  scid:{self.scid:>13}" if with_scid else ""
-        bal = f"  S:{int(self.sendable):11}/R:{int(self.receivable):11}" if with_bal_msat else ""
-        ratio = f"  MINE:{(100*self.send_ratio):>8.4f}%" if with_bal_ratio else ""
-        payments = f"  OUT:{int(self.out_fulfilled_msat):>11}/IN:{int(self.in_fulfilled_msat):>11}" if with_payments else ""
-        profits = f"  P$:{int(self.fees_lifetime_mine):>8}" if with_profits else ""
-        cost = f"  COST:{self.opportunity_cost_lent:>8}" if with_cost else ""
-        ppm_theirs = self.ppm_to_me if self.to_me else "N/A"
-        ppm_theirs = f"  PPM_THEIRS:{ppm_theirs:>6}" if with_ppm_theirs else ""
-        ppm_mine = self.ppm_from_me if self.from_me else "N/A"
-        ppm_mine = f"  PPM_MINE:{ppm_mine:>6}" if with_ppm_mine else ""
-        return f"channel{alias:30}{peerid}{scid}{bal}{ratio}{payments}{profits}{cost}{ppm_theirs}{ppm_mine}"
-
-
-    @property
-    def online(self) -> bool:
-        return self.from_me and self.to_me
-
-    @property
-    def remote_peer(self) -> str:
-        if self.from_me:
-            return self.from_me["destination"]
-        else:
-            return self.to_me["source"]
-
-    @property
-    def remote_alias(self) -> str:
-        return self.remote_node["alias"]
-
-    @property
-    def scid(self) -> str:
-        if self.from_me:
-            return self.from_me["short_channel_id"]
-        else:
-            return self.to_me["short_channel_id"]
-
-    @property
-    def htlc_minimum_to_me(self) -> Millisatoshi:
-        return self.to_me["htlc_minimum_msat"]
-
-    @property
-    def htlc_minimum_from_me(self) -> Millisatoshi:
-        return self.from_me["htlc_minimum_msat"]
-
-    @property
-    def htlc_minimum(self) -> Millisatoshi:
-        return max(self.htlc_minimum_to_me, self.htlc_minimum_from_me)
-
-    @property
-    def htlc_maximum_to_me(self) -> Millisatoshi:
-        return self.to_me["htlc_maximum_msat"]
-
-    @property
-    def htlc_maximum_from_me(self) -> Millisatoshi:
-        return self.from_me["htlc_maximum_msat"]
-
-    @property
-    def htlc_maximum(self) -> Millisatoshi:
-        return min(self.htlc_maximum_to_me, self.htlc_maximum_from_me)
-
-    @property
-    def direction_to_me(self) -> int:
-        return self.to_me["direction"]
-
-    @property
-    def direction_from_me(self) -> int:
-        return self.from_me["direction"]
-
-    @property
-    def directed_scid_to_me(self) -> str:
-        return f"{self.scid}/{self.direction_to_me}"
-
-    @property
-    def directed_scid_from_me(self) -> str:
-        return f"{self.scid}/{self.direction_from_me}"
-
-    @property
-    def delay_them(self) -> str:
-        return self.to_me["delay"]
-
-    @property
-    def delay_me(self) -> str:
-        return self.from_me["delay"]
-
-    @property
-    def ppm_to_me(self) -> int:
-        return self.to_me["fee_per_millionth"]
-
-    @property
-    def ppm_from_me(self) -> int:
-        return self.from_me["fee_per_millionth"]
-        # return self.peer_ch["fee_proportional_millionths"]
-
-    @property
-    def base_fee_to_me(self) -> int:
-        return self.to_me["base_fee_millisatoshi"]
-
-    @property
-    def receivable(self) -> int:
-        return self.peer_ch["receivable_msat"]
-
-    @property
-    def sendable(self) -> int:
-        return self.peer_ch["spendable_msat"]
-
-    @property
-    def in_fulfilled_msat(self) -> Millisatoshi:
-        return self.peer_ch["in_fulfilled_msat"]
-
-    @property
-    def out_fulfilled_msat(self) -> Millisatoshi:
-        return self.peer_ch["out_fulfilled_msat"]
-
-    @property
-    def fees_lifetime_mine(self) -> Millisatoshi:
-        return sum(fwd["fee_msat"] for fwd in self.forwards_from_me)
-
-    @property
-    def send_ratio(self) -> float:
-        cap = self.receivable + self.sendable
-        return self.sendable / cap
-
-    @property
-    def opportunity_cost_lent(self) -> int:
-        """ how much msat did we gain by pushing their channel to its current balance? """
-        return int(self.receivable * self.ppm_from_me / 1000000)
-
-class RpcHelper:
-    def __init__(self, rpc: LightningRpc):
-        self.rpc = rpc
-        self.self_id = rpc.getinfo()["id"]
-
-    def localchannel(self, scid: str) -> LocalChannel:
-        listchan = self.rpc.listchannels(scid)
-        # this assertion would probably indicate a typo in the scid
-        assert listchan and listchan.get("channels", []) != [], f"bad listchannels for {scid}: {listchan}"
-        return LocalChannel(listchan["channels"], self)
-
-    def node(self, id: str) -> dict:
-        nodes = self.rpc.listnodes(id)["nodes"]
-        assert len(nodes) == 1, f"unexpected: multiple nodes for {id}: {nodes}"
-        return nodes[0]
-
-    def peerchannel(self, scid: str, peer_id: str) -> dict:
-        peerchannels = self.rpc.listpeerchannels(peer_id)["channels"]
-        channels = [c for c in peerchannels if c["short_channel_id"] == scid]
-        assert len(channels) == 1, f"expected exactly 1 channel, got: {channels}"
-        return channels[0]
-
-    def try_getroute(self, *args, **kwargs) -> dict | None:
-        """ wrapper for getroute which returns None instead of error if no route exists """
-        try:
-            route = self.rpc.getroute(*args, **kwargs)
-        except RpcError as e:
-            logger.debug(f"rpc failed: {e}")
-            return None
-        else:
-            route = route["route"]
-            if route == []: return None
-            return route
-
-class LoopRouter:
-    def __init__(self, rpc: RpcHelper, metrics: Metrics = None):
-        self.rpc = rpc
-        self.metrics = metrics or Metrics()
-        self.bad_channels = []  # list of directed scid
-        self.nonzero_base_channels = []  # list of directed scid
-
-    def drop_caches(self) -> None:
-        logger.info("LoopRouter.drop_caches()")
-        self.bad_channels = []
-
-    def _get_directed_scid(self, scid: str, direction: int) -> dict:
-        channels = self.rpc.rpc.listchannels(scid)["channels"]
-        channels = [c for c in channels if c["direction"] == direction]
-        assert len(channels) == 1, f"expected exactly 1 channel: {channels}"
-        return channels[0]
-
-    def loop_once(self, out_scid: str, in_scid: str, bounds: TxBounds) -> LoopError|int:
-        out_ch = self.rpc.localchannel(out_scid)
-        in_ch = self.rpc.localchannel(in_scid)
-
-        if out_ch.directed_scid_from_me in self.bad_channels or in_ch.directed_scid_to_me in self.bad_channels:
-            logger.info(f"loop {out_scid} -> {in_scid} failed in our own channel")
-            self.metrics.own_bad_channel += 1
-            return LoopError.TRANSIENT
-
-        # bounds = bounds.restrict_to_htlc(out_ch)  # htlc bounds seem to be enforced only in the outward direction
-        bounds = bounds.restrict_to_htlc(in_ch)
-        bounds = bounds.restrict_to_zero_fees(in_ch)
-        if not bounds.is_satisfiable():
-            self.metrics.in_ch_unsatisfiable += 1
-            return LoopError.NO_ROUTE
-
-        logger.debug(f"route with bounds {bounds}")
-        route = self.route(out_ch, in_ch, bounds)
-        logger.debug(f"route: {route}")
-        if route == RouteError.NO_ROUTE:
-            self.metrics.no_route += 1
-            return LoopError.NO_ROUTE
-        elif route == RouteError.HAS_BASE_FEE:
-            # try again with a different route
-            return LoopError.TRANSIENT
-
-        amount_msat = route[0]["amount_msat"]
-        invoice_id = f"loop-{time.time():.6f}".replace(".", "_")
-        invoice_desc = f"bal {out_scid}:{in_scid}"
-        invoice = self.rpc.rpc.invoice("any", invoice_id, invoice_desc)
-        logger.debug(f"invoice: {invoice}")
-
-        payment = self.rpc.rpc.sendpay(route, invoice["payment_hash"], invoice_id, amount_msat, invoice["bolt11"], invoice["payment_secret"])
-        logger.debug(f"sent: {payment}")
-
-        try:
-            wait = self.rpc.rpc.waitsendpay(invoice["payment_hash"])
-            logger.debug(f"result: {wait}")
-        except RpcError as e:
-            self.metrics.sendpay_fail += 1
-            err_data = e.error["data"]
-            err_scid, err_dir = err_data["erring_channel"], err_data["erring_direction"]
-            err_directed_scid = f"{err_scid}/{err_dir}"
-            logger.debug(f"ch failed, adding to excludes: {err_directed_scid}; {e.error}")
-            self.bad_channels.append(err_directed_scid)
-            return LoopError.TRANSIENT
-        else:
-            self.metrics.sendpay_succeed += 1
-            self.metrics.looped_msat += int(amount_msat)
-            return int(amount_msat)
-
-    def route(self, out_ch: LocalChannel, in_ch: LocalChannel, bounds: TxBounds) -> list[dict] | RouteError:
-        exclude = [
-            # ensure the payment doesn't cross either channel in reverse.
-            # note that this doesn't preclude it from taking additional trips through self, with other peers.
-            # out_ch.directed_scid_to_me,
-            # in_ch.directed_scid_from_me,
-
-            # alternatively, never route through self. this avoids a class of logic error, like what to do with fees i charge "myself".
-            self.rpc.self_id
-        ] + self.bad_channels + self.nonzero_base_channels
-
-        out_peer = out_ch.remote_peer
-        in_peer = in_ch.remote_peer
-
-        route_or_bounds = bounds
-        while isinstance(route_or_bounds, TxBounds):
-            old_bounds = route_or_bounds
-            route_or_bounds = self._find_partial_route(out_peer, in_peer, old_bounds, exclude=exclude)
-            if route_or_bounds == old_bounds:
-                return RouteError.NO_ROUTE
-
-        if isinstance(route_or_bounds, RouteError):
-            return route_or_bounds
-
-        route = self._add_route_endpoints(route_or_bounds, out_ch, in_ch)
-        return route
-
-    def _find_partial_route(self, out_peer: str, in_peer: str, bounds: TxBounds, exclude: list[str]=[]) -> list[dict] | RouteError | TxBounds:
-        route = self.rpc.try_getroute(in_peer, amount_msat=bounds.max_msat, riskfactor=0, fromid=out_peer, exclude=exclude, cltv=CLTV)
-        if route is None:
-            logger.debug(f"no route for {bounds.max_msat}msat {out_peer} -> {in_peer}")
-            return RouteError.NO_ROUTE
-
-        send_msat = route[0]["amount_msat"]
-        if send_msat != Millisatoshi(bounds.max_msat):
-            logger.debug(f"found route with non-zero fee: {send_msat} -> {bounds.max_msat}. {route}")
-
-            error = None
-            for hop in route:
-                hop_scid = hop["channel"]
-                hop_dir = hop["direction"]
-                directed_scid = f"{hop_scid}/{hop_dir}"
-                ch = self._get_directed_scid(hop_scid, hop_dir)
-                if ch["base_fee_millisatoshi"] != 0:
-                    self.nonzero_base_channels.append(directed_scid)
-                    error = RouteError.HAS_BASE_FEE
-                bounds = bounds.restrict_to_zero_fees(ppm=ch["fee_per_millionth"], why=directed_scid)
-
-            return bounds.raise_max_to_be_satisfiable() if error is None else error
-
-        return route
-
-    def _add_route_endpoints(self, route, out_ch: LocalChannel, in_ch: LocalChannel):
-        inbound_hop = dict(
-          id=self.rpc.self_id,
-          channel=in_ch.scid,
-          direction=in_ch.direction_to_me,
-          amount_msat=route[-1]["amount_msat"],
-          delay=route[-1]["delay"],
-          style="tlv",
-        )
-        route = self._add_route_delay(route, in_ch.delay_them) + [ inbound_hop ]
-
-        outbound_hop = dict(
-            id=out_ch.remote_peer,
-            channel=out_ch.scid,
-            direction=out_ch.direction_from_me,
-            amount_msat=route[0]["amount_msat"],
-            delay=route[0]["delay"] + out_ch.delay_them,
-            style="tlv",
-        )
-        route = [ outbound_hop ] + route
-        return route
-
-    def _add_route_delay(self, route: list[dict], delay: int) -> list[dict]:
-        return [ dict(hop, delay=hop["delay"] + delay) for hop in route ]
-
-@dataclass
-class LoopJob:
-    out: str  # scid
-    in_: str  # scid
-    amount: int
-
-@dataclass
-class LoopJobIdle:
-    sec: int = 10
-
-class LoopJobDone(Enum):
-    COMPLETED = "COMPLETED"
-    ABORTED = "ABORTED"
-
-class AbstractLoopRunner:
-    def __init__(self, looper: LoopRouter, bounds: TxBounds, parallelism: int):
-        self.looper = looper
-        self.bounds = bounds
-        self.parallelism = parallelism
-        self.bounds_map = {}  # map (out:str, in_:str) -> TxBounds. it's a cache so we don't have to try 10 routes every time.
-
-    def pop_job(self) -> LoopJob | LoopJobIdle | LoopJobDone:
-        raise NotImplemented  # abstract method
-
-    def finished_job(self, job: LoopJob, progress: int|LoopError) -> None:
-        raise NotImplemented  # abstract method
-
-    def run_to_completion(self, exit_on_any_completed:bool = False) -> None:
-        self.exiting = False
-        self.exit_on_any_completed = exit_on_any_completed
-        if self.parallelism == 1:
-            # run inline to aid debugging
-            self._worker_thread()
-        else:
-            with ThreadPoolExecutor(max_workers=self.parallelism) as executor:
-                _ = list(executor.map(lambda _i: self._try_invoke(self._worker_thread), range(self.parallelism)))
-
-    def drop_caches(self) -> None:
-        logger.info("AbstractLoopRunner.drop_caches()")
-        self.looper.drop_caches()
-        self.bounds_map = {}
-
-
-    def _try_invoke(self, f, *args) -> None:
-        """
-        try to invoke `f` with the provided `args`, and log if it fails.
-        this overcomes the issue that background tasks which fail via Exception otherwise do so silently.
-        """
-        try:
-            f(*args)
-        except Exception as e:
-            logger.error(f"task failed: {e}")
-
-
-    def _worker_thread(self) -> None:
-        while not self.exiting:
-            job = self.pop_job()
-            logger.debug(f"popped job: {job}")
-            if isinstance(job, LoopJobDone):
-                return self._worker_finished(job)
-
-            if isinstance(job, LoopJobIdle):
-                logger.debug(f"idling for {job.sec}")
-                time.sleep(job.sec)
-                continue
-
-            result = self._execute_job(job)
-            logger.debug(f"finishing job {job} with {result}")
-            self.finished_job(job, result)
-
-    def _execute_job(self, job: LoopJob) -> LoopError|int:
-        bounds = self.bounds_map.get((job.out, job.in_), self.bounds)
-        bounds = bounds.intersect(TxBounds(max_msat=job.amount))
-        if not bounds.is_satisfiable():
-            logger.debug(f"TxBounds for job are unsatisfiable; skipping: {bounds} {job}")
-            return LoopError.NO_ROUTE
-
-        amt_looped = self.looper.loop_once(job.out, job.in_, bounds)
-        if amt_looped in (0, LoopError.NO_ROUTE, LoopError.TRANSIENT):
-            return amt_looped
-
-        logger.info(f"looped {amt_looped} from {job.out} -> {job.in_}")
-        bounds = bounds.intersect(TxBounds(max_msat=amt_looped))
-
-        self.bounds_map[(job.out, job.in_)] = bounds
-        return amt_looped
-
-    def _worker_finished(self, job: LoopJobDone) -> None:
-        if job == LoopJobDone.COMPLETED and self.exit_on_any_completed:
-            logger.debug(f"worker completed -> exiting pool")
-            self.exiting = True
-
-class LoopPairState:
-    # TODO: use this in MultiLoopBalancer, or stop shoving state in here and put it on LoopBalancer instead.
-    def __init__(self, out: str, in_: str, amount: int):
-        self.out = out
-        self.in_ = in_
-        self.amount_target = amount
-        self.amount_looped = 0
-        self.amount_outstanding = 0
-        self.tx_fail_count = 0
-        self.route_fail_count = 0
-        self.last_job_start_time = None
-        self.failed_tx_throttler = 0  # increase by one every time we fail, decreases more gradually, when we succeed
-
-class LoopBalancer(AbstractLoopRunner):
-    def __init__(self, out: str, in_: str, amount: int, looper: LoopRouter, bounds: TxBounds, parallelism: int=1):
-        super().__init__(looper, bounds, parallelism)
-        self.state = LoopPairState(out, in_, amount)
-
-    def pop_job(self) -> LoopJob | LoopJobIdle | LoopJobDone:
-        if self.state.tx_fail_count + 10*self.state.route_fail_count >= MAX_SEQUENTIAL_JOB_FAILURES:
-            logger.info(f"giving up ({self.state.out} -> {self.state.in_}): {self.state.tx_fail_count} tx failures, {self.state.route_fail_count} route failures")
-            return LoopJobDone.ABORTED
-
-        if self.state.tx_fail_count + self.state.route_fail_count > 0:
-            # N.B.: last_job_start_time is guaranteed to have been set by now
-            idle_until = self.state.last_job_start_time + TX_FAIL_BACKOFF*self.state.failed_tx_throttler
-            idle_for = idle_until - time.time()
-            if self.state.amount_outstanding != 0 or idle_for > 0:
-                # when we hit transient failures, restrict to just one job in flight at a time.
-                # this is aimed for the initial route building, where multiple jobs in flight is just useless,
-                # but it's not a bad idea for network blips, etc, either.
-                logger.info(f"throttling ({self.state.out} -> {self.state.in_}) for {idle_for:.0f}: {self.state.tx_fail_count} tx failures, {self.state.route_fail_count} route failures")
-                return LoopJobIdle(idle_for) if idle_for > 0 else LoopJobIdle()
-
-        amount_avail = self.state.amount_target - self.state.amount_looped - self.state.amount_outstanding
-        if amount_avail < self.bounds.min_msat:
-            if self.state.amount_outstanding == 0: return LoopJobDone.COMPLETED
-            return LoopJobIdle()  # sending out another job would risk over-transferring
-        amount_this_job = min(amount_avail, self.bounds.max_msat)
-
-        self.state.amount_outstanding += amount_this_job
-        self.state.last_job_start_time = time.time()
-        return LoopJob(out=self.state.out, in_=self.state.in_, amount=amount_this_job)
-
-    def finished_job(self, job: LoopJob, progress: int) -> None:
-        self.state.amount_outstanding -= job.amount
-        if progress == LoopError.NO_ROUTE:
-            self.state.route_fail_count += 1
-            self.state.failed_tx_throttler += 10
-        elif progress == LoopError.TRANSIENT:
-            self.state.tx_fail_count += 1
-            self.state.failed_tx_throttler += 1
-        else:
-            self.state.amount_looped += progress
-            self.state.tx_fail_count = 0
-            self.state.route_fail_count = 0
-            self.state.failed_tx_throttler = max(0, self.state.failed_tx_throttler - 0.2)
-        logger.info(f"loop progressed ({job.out} -> {job.in_}) {progress}: {self.state.amount_looped} of {self.state.amount_target}")
-
-class MultiLoopBalancer(AbstractLoopRunner):
-    """
-    multiplexes jobs between multiple LoopBalancers.
-    note that the child LoopBalancers don't actually execute the jobs -- just produce them.
-    """
-    def __init__(self, looper: LoopRouter, bounds: TxBounds, parallelism: int=1):
-        super().__init__(looper, bounds, parallelism)
-        self.loops = []
-        # job_index: increments on every job so we can grab jobs evenly from each LoopBalancer.
-        # in that event that producers are idling, it can actually increment more than once,
-        # so don't take this too literally
-        self.job_index = 0
-
-    def add_loop(self, out: LocalChannel, in_: LocalChannel, amount: int) -> None:
-        """
-        start looping sats from out -> in_
-        """
-        assert not any(l.state.out == out.scid and l.state.in_ == in_.scid for l in self.loops), f"tried to add duplicate loops from {out} -> {in_}"
-        logger.info(f"looping from ({out}) to ({in_})")
-        self.loops.append(LoopBalancer(out.scid, in_.scid, amount, self.looper, self.bounds, self.parallelism))
-
-    def pop_job(self) -> LoopJob | LoopJobIdle | LoopJobDone:
-        # N.B.: this can be called in parallel, so try to be consistent enough to not crash
-
-        idle_job = None
-        abort_job = None
-        for i, _ in enumerate(self.loops):
-            loop = self.loops[(self.job_index + i) % len(self.loops)]
-            self.job_index += 1
-            job = loop.pop_job()
-            if isinstance(job, LoopJob):
-                return job
-            if isinstance(job, LoopJobIdle):
-                idle_job = LoopJobIdle(min(job.sec, idle_job.sec)) if idle_job is not None else job
-            if job == LoopJobDone.ABORTED:
-                abort_job = job
-
-        # either there's a task to idle, or we have to terminate.
-        # if terminating, terminate ABORTED if any job aborted, else COMPLETED
-        if idle_job is not None: return idle_job
-        if abort_job is not None: return abort_job
-        return LoopJobDone.COMPLETED
-
-    def finished_job(self, job: LoopJob, progress: int) -> None:
-        # this assumes (enforced externally) that we have only one loop for a given out/in_ pair
-        for l in self.loops:
-            if l.state.out == job.out and l.state.in_ == job.in_:
-                l.finished_job(job, progress)
-
-        logger.info(f"total: {self.looper.metrics}")
-
-
-def balance_loop(rpc: RpcHelper, out: str, in_: str, amount_msat: int, min_msat: int, max_msat: int, parallelism: int):
-    looper = LoopRouter(rpc)
-    bounds = TxBounds(min_msat=min_msat, max_msat=max_msat)
-    balancer = LoopBalancer(out, in_, amount_msat, looper, bounds, parallelism)
-
-    balancer.run_to_completion()
-
-def autobalance_once(rpc: RpcHelper, metrics: Metrics, bounds: TxBounds, parallelism: int) -> bool:
-    """
-    autobalances all channels.
-    returns True if channels are balanced (or as balanced as can be); False if in need of further balancing
-    """
-    looper = LoopRouter(rpc, metrics)
-    balancer = MultiLoopBalancer(looper, bounds, parallelism)
-
-    channels = []
-    for peerch in rpc.rpc.listpeerchannels()["channels"]:
-        try:
-            channels.append(rpc.localchannel(peerch["short_channel_id"]))
-        except:
-            logger.info(f"NO CHANNELS for {peerch['peer_id']}")
-
-    channels = [ch for ch in channels if ch.online and ch.base_fee_to_me == 0]
-    give_to = [ ch for ch in channels if ch.send_ratio > 0.95 ]
-    take_from = [ ch for ch in channels if ch.send_ratio < 0.20 ]
-
-    if give_to == [] and take_from == []:
-        return True
-
-    for to in give_to:
-        for from_ in take_from:
-            balancer.add_loop(to, from_, 10000000)
-
-    balancer.run_to_completion(exit_on_any_completed=True)
-    return False
-
-
-def autobalance(rpc: RpcHelper, min_msat: int, max_msat: int, parallelism: int):
-    bounds = TxBounds(min_msat=min_msat, max_msat=max_msat)
-    metrics = Metrics()
-    while not autobalance_once(rpc, metrics, bounds, parallelism):
-        pass
-
-def show_status(rpc: RpcHelper, full: bool=False):
-    """
-    show a table of channel balances between peers.
-    """
-    for peerch in rpc.rpc.listpeerchannels()["channels"]:
-        try:
-            ch = rpc.localchannel(peerch["short_channel_id"])
-        except:
-            print(f"{peerch['peer_id']} scid:{peerch['short_channel_id']} state:{peerch['state']} NO CHANNELS")
-        else:
-            print(ch.to_str(with_scid=True, with_bal_ratio=True, with_payments=True, with_cost=full, with_ppm_theirs=True, with_ppm_mine=True, with_peer_id=full))
-
-def main():
-    logging.basicConfig()
-    logger.setLevel(logging.INFO)
-
-    parser = argparse.ArgumentParser(description="rebalance lightning channel balances")
-    parser.add_argument("--verbose", action="store_true", help="more logging")
-    parser.add_argument("--min-msat", default="999", help="min transaction size")
-    parser.add_argument("--max-msat", default="1000000", help="max transaction size")
-    parser.add_argument("--jobs", default="1", help="how many HTLCs to keep in-flight at once")
-    subparsers = parser.add_subparsers(help="action")
-
-    status_parser = subparsers.add_parser("status")
-    status_parser.set_defaults(action="status")
-    status_parser.add_argument("--full", action="store_true", help="more info per channel")
-
-    loop_parser = subparsers.add_parser("loop")
-    loop_parser.set_defaults(action="loop")
-    loop_parser.add_argument("out", help="peer id to send tx through")
-    loop_parser.add_argument("in_", help="peer id to receive tx through")
-    loop_parser.add_argument("amount", help="total amount of msat to loop")
-
-    autobal_parser = subparsers.add_parser("autobalance")
-    autobal_parser.set_defaults(action="autobalance")
-
-    args = parser.parse_args()
-
-    if args.verbose:
-        logger.setLevel(logging.DEBUG)
-
-    rpc = RpcHelper(LightningRpc(RPC_FILE))
-
-    if args.action == "status":
-        show_status(rpc, full=args.full)
-
-    if args.action == "loop":
-        balance_loop(rpc, out=args.out, in_=args.in_, amount_msat=int(args.amount), min_msat=int(args.min_msat), max_msat=int(args.max_msat), parallelism=int(args.jobs))
-
-    if args.action == "autobalance":
-        autobalance(rpc, min_msat=int(args.min_msat), max_msat=int(args.max_msat), parallelism=int(args.jobs))
-
-if __name__ == '__main__':
-    main()

hosts/by-name/servo/services/cryptocurrencies/clightning.nix

@@ -1,135 +0,0 @@
-# clightning is an implementation of Bitcoin's Lightning Network.
-# as such, this assumes that `services.bitcoin` is enabled.
-# docs:
-# - tor clightning config: <https://docs.corelightning.org/docs/tor>
-# - `lightning-cli` and subcommands: <https://docs.corelightning.org/reference/lightning-cli>
-# - `man lightningd-config`
-#
-# management/setup/use:
-# - guide: <https://github.com/ElementsProject/lightning>
-#
-# debugging:
-# - `lightning-cli getlog debug`
-# - `lightning-cli listpays`  -> show payments this node sent
-# - `lightning-cli listinvoices`  -> show payments this node received
-#
-# first, acquire peers:
-# - `lightning-cli connect id@host`
-#   where `id` is the node's pubkey, and `host` is perhaps an ip:port tuple, or a hash.onion:port tuple.
-#   for testing, choose any node listed on <https://1ml.com>
-# - `lightning-cli listpeers`
-#   should show the new peer, with `connected: true`
-#
-# then, fund the clightning wallet
-# - `lightning-cli newaddr`
-#
-# then, open channels
-# - `lightning-cli connect ...`
-# - `lightning-cli fundchannel <node_id> <amount_in_satoshis>`
-#
-# who to federate with?
-# - a lot of the larger nodes allow hands-free channel creation
-#   - either inbound or outbound, sometimes paid
-# - find nodes on:
-#   - <https://terminal.lightning.engineering/>
-#   - <https://1ml.com>
-#     - tor nodes: <https://1ml.com/node?order=capacity&iponionservice=true>
-#   - <https://lightningnetwork.plus>
-#   - <https://mempool.space/lightning>
-#   - <https://amboss.space>
-# - a few tor-capable nodes which allow channel creation:
-#   - <https://c-otto.de/>
-#   - <https://cyberdyne.sh/>
-#   - <https://yalls.org/about/>
-#   - <https://coincept.com/>
-# - more resources: <https://www.lopp.net/lightning-information.html>
-#   - node routability: https://hashxp.org/lightning/node/<id>
-# - especially, acquire inbound liquidity via lightningnetwork.plus's swap feature
-#   - most of the opportunities are gated behind a minimum connection or capacity requirement
-#
-# tune payment parameters
-# - `lightning-cli setchannel <id> [feebase] [feeppm] [htlcmin] [htlcmax] [enforcedelay] [ignorefeelimits]`
-#   - e.g. `lightning-cli setchannel all 0 10`
-#   - it's suggested that feebase=0 simplifies routing.
-#
-# teardown:
-# - `lightning-cli withdraw <bc1... dest addr> <amount in satoshis> [feerate]`
-#
-# sanity:
-# - `lightning-cli listfunds`
-#
-# to receive a payment (do as `clightning` user):
-# - `lightning-cli invoice <amount in millisatoshi> <label> <description>`
-#   - specify amount as `any` if undetermined
-#   - then give the resulting bolt11 URI to the payer
-# to send a payment:
-# - `lightning-cli pay <bolt11 URI>`
-#   - or `lightning-cli pay <bolt11 URI> [amount_msat] [label] [riskfactor] [maxfeepercent] ...`
-#   - amount_msat must be "null" if the bolt11 URI specifies a value
-#   - riskfactor defaults to 10
-#   - maxfeepercent defaults to 0.5
-#   - label is a human-friendly label for my records
-
-{ config, pkgs, ... }:
-{
-  sane.persist.sys.byStore.ext = [
-    { user = "clightning"; group = "clightning"; mode = "0710"; path = "/var/lib/clightning"; method = "bind"; }
-  ];
-
-  # `lightning-cli` finds its RPC file via `~/.lightning/bitcoin/lightning-rpc`, to message the daemon
-  sane.user.fs.".lightning".symlink.target = "/var/lib/clightning";
-
-  # see bitcoin.nix for how to generate this
-  services.bitcoind.mainnet.rpc.users.clightning.passwordHMAC =
-    "befcb82d9821049164db5217beb85439$2c31ac7db3124612e43893ae13b9527dbe464ab2d992e814602e7cb07dc28985";
-
-  sane.services.clightning.enable = true;
-  sane.services.clightning.proxy = "127.0.0.1:9050";  # proxy outgoing traffic through tor
-  # sane.services.clightning.publicAddress = "statictor:127.0.0.1:9051";
-  sane.services.clightning.getPublicAddressCmd = "cat /var/lib/tor/onion/clightning/hostname";
-
-  services.tor.relay.onionServices.clightning = {
-    version = 3;
-    map = [{
-      # by default tor will route public tor port P to 127.0.0.1:P.
-      # so if this port is the same as clightning would natively use, then no further config is needed here.
-      # see: <https://2019.www.torproject.org/docs/tor-manual.html.en#HiddenServicePort>
-      port = 9735;
-      # target.port; target.addr;  #< set if tor port != clightning port
-    }];
-    # allow "tor" group (i.e. clightning) to read /var/lib/tor/onion/clightning/hostname
-    settings.HiddenServiceDirGroupReadable = true;
-  };
-
-  # must be in "tor" group to read /var/lib/tor/onion/*/hostname
-  users.users.clightning.extraGroups = [ "tor" ];
-
-  systemd.services.clightning.after = [ "tor.service" ];
-
-  # lightning-config contains fields from here:
-  # - <https://docs.corelightning.org/docs/configuration>
-  # secret config includes:
-  # - bitcoin-rpcpassword
-  # - alias=nodename
-  # - rgb=rrggbb
-  # - fee-base=<millisatoshi>
-  # - fee-per-satoshi=<ppm>
-  # - feature configs (i.e. experimental-xyz options)
-  sane.services.clightning.extraConfig = ''
-    log-level=debug:lightningd
-    # peerswap:
-    # - config example: <https://github.com/fort-nix/nix-bitcoin/pull/462/files#diff-b357d832705b8ce8df1f41934d613f79adb77c4cd5cd9e9eb12a163fca3e16c6>
-    # XXX: peerswap crashes clightning on launch. stacktrace is useless.
-    # plugin=${pkgs.peerswap}/bin/peerswap
-    # peerswap-db-path=/var/lib/clightning/peerswap/swaps
-    # peerswap-policy-path=...
-  '';
-  sane.services.clightning.extraConfigFiles = [ config.sops.secrets."lightning-config".path ];
-  sops.secrets."lightning-config" = {
-    mode = "0640";
-    owner = "clightning";
-    group = "clightning";
-  };
-
-  sane.programs.clightning.enableFor.user.colin = true;  # for debugging/admin: `lightning-cli`
-}

hosts/by-name/servo/services/cryptocurrencies/default.nix

@@ -1,10 +0,0 @@
-{ ... }:
-{
-  imports = [
-    ./bitcoin.nix
-    ./clightning.nix
-    ./i2p.nix
-    ./monero.nix
-    ./tor.nix
-  ];
-}

hosts/by-name/servo/services/cryptocurrencies/i2p.nix

@@ -1,4 +0,0 @@
-{ ... }:
-{
-  services.i2p.enable = true;
-}

hosts/by-name/servo/services/cryptocurrencies/monero.nix

@@ -1,31 +0,0 @@
-# as of 2023/11/26: complete downloaded blockchain should be 200GiB on disk, give or take.
-{ ... }:
-{
-  sane.persist.sys.byStore.ext = [
-    # /var/lib/monero/lmdb is what consumes most of the space
-    { user = "monero"; group = "monero"; path = "/var/lib/monero"; method = "bind"; }
-  ];
-
-  services.monero.enable = true;
-  services.monero.limits.upload = 5000;  # in kB/s
-  services.monero.extraConfig = ''
-    # see: monero doc/ANONYMITY_NETWORKS.md
-    #
-    # "If any anonymity network is enabled, transactions being broadcast that lack a valid 'context'
-    # (i.e. the transaction did not come from a P2P connection) will only be sent to peers on anonymity networks."
-    #
-    # i think this means that setting tx-proxy here ensures any transactions sent locally to my node (via RPC)
-    # will be sent over an anonymity network.
-    tx-proxy=i2p,127.0.0.1:9000
-    tx-proxy=tor,127.0.0.1:9050
-  '';
-
-  # monero ports: <https://monero.stackexchange.com/questions/604/what-ports-does-monero-use-rpc-p2p-etc>
-  # - 18080 = "P2P" monero node <-> monero node connections
-  # - 18081 = "RPC" monero client -> monero node connections
-  sane.ports.ports."18080" = {
-    protocol = [ "tcp" ];
-    visibleTo.wan = true;
-    description = "colin-monero-p2p";
-  };
-}

hosts/by-name/servo/services/cryptocurrencies/tor.nix

@@ -1,25 +0,0 @@
-# tor settings: <https://2019.www.torproject.org/docs/tor-manual.html.en>
-{ lib, ... }:
-{
-  # tor hidden service hostnames aren't deterministic, so persist.
-  # might be able to get away with just persisting /var/lib/tor/onion, not sure.
-  sane.persist.sys.byStore.plaintext = [
-    { user = "tor"; group = "tor"; mode = "0710"; path = "/var/lib/tor"; method = "bind"; }
-  ];
-
-  # tor: `tor.enable` doesn't start a relay, exit node, proxy, etc. it's minimal.
-  # tor.client.enable configures a torsocks proxy, accessible *only* to localhost.
-  #   at 127.0.0.1:9050
-  services.tor.enable = true;
-  services.tor.client.enable = true;
-
-  # in order for services to read /var/lib/tor/onion/*/hostname, they must be able to traverse /var/lib/tor,
-  # and /var/lib/tor must have g+x.
-  # DataDirectoryGroupReadable causes tor to use g+rx, technically more than we need, but all the files are 600 so it's fine.
-  services.tor.settings.DataDirectoryGroupReadable = true;
-  # StateDirectoryMode defaults to 0700, and thereby prevents the onion hostnames from being group readable
-  systemd.services.tor.serviceConfig.StateDirectoryMode = lib.mkForce "0710";
-  users.users.tor.homeMode = "0710";  # home mode defaults to 0700, causing readability problems, enforced by nixos "users" activation script
-
-  services.tor.settings.SafeLogging = false;  # show actual .onion names in the syslog, else debugging is impossible
-}

hosts/by-name/servo/services/default.nix

@@ -1,34 +0,0 @@
-{ ... }:
-{
-  imports = [
-    ./calibre.nix
-    ./coturn.nix
-    ./cryptocurrencies
-    ./email
-    ./ejabberd.nix
-    ./freshrss.nix
-    ./export
-    ./gitea.nix
-    ./goaccess.nix
-    ./ipfs.nix
-    ./jackett.nix
-    ./jellyfin.nix
-    ./kiwix-serve.nix
-    ./komga.nix
-    ./lemmy.nix
-    ./matrix
-    ./navidrome.nix
-    ./nginx.nix
-    ./nixos-prebuild.nix
-    ./nixserve.nix
-    ./ntfy
-    ./pict-rs.nix
-    ./pleroma.nix
-    ./postgres.nix
-    ./prosody
-    ./slskd.nix
-    ./transmission.nix
-    ./trust-dns.nix
-    ./wikipedia.nix
-  ];
-}

hosts/by-name/servo/services/ejabberd.nix

@@ -1,471 +0,0 @@
-# docs:
-# - <https://docs.ejabberd.im/admin/configuration/basic>
-# example configs:
-# - <https://github.com/vkleen/machines/blob/138a2586ce185d7cf201d4e1fe898c83c4af52eb/hosts/europium/ejabberd.nix>
-# - <https://github.com/Mic92/stockholm/blob/675ef0088624c9de1cb531f318446316884a9d3d/tv/3modules/ejabberd/default.nix>
-# - <https://github.com/buffet/tararice/blob/master/programs/ejabberd.nix>
-#   - enables STUN and TURN
-#   - only over UDP 3478, not firewall-forwarding any TURN port range
-#   - uses stun_disco module (but with no options)
-# - <https://github.com/leo60228/dotfiles/blob/39b3abba3009bdc31413d4757ca2f882a33eec8b/files/ejabberd.yml>
-# - <https://github.com/Mic92/dotfiles/blob/ddf0f4821f554f7667fc803344657367c55fb9e6/nixos/eve/modules/ejabberd.nix>
-# - <nixpkgs:nixos/tests/xmpp/ejabberd.nix>
-# - 2013: <https://github.com/processone/ejabberd/blob/master/ejabberd.yml.example>
-#
-# compliance tests:
-# - <https://compliance.conversations.im/server/uninsane.org/#xep0352>
-#
-# administration:
-# - `sudo -u ejabberd ejabberdctl help`
-#
-# federation/support matrix:
-# - avatars
-#   - nixnet.services + dino: works in MUCs but not DMs  (as of 2023 H1)
-#   - movim.eu + dino: works in DMs, MUCs untested  (as of 2023/08/29)
-# - calls
-#   - local + dino: audio, video, works in DMs  (as of 2023/08/29)
-#   - movim.eu + dino: audio, video, works in DMs, no matter which side initiates  (as of 2023/08/30)
-#   - +native-cell-number@cheogram.com + dino: audio works in DMs, no matter which side initiates  (as of 2023/09/01)
-#     - can receive calls even if sender isn't in my roster
-#     - this is presumably using JMP.chat's SIP servers, which then convert it to XMPP call
-#
-# bugs:
-# - 2023/09/01: will randomly stop federating. `systemctl restart ejabberd` fixes, but takes 10 minutes.
-{ config, lib, pkgs, ... }:
-
-let
-  # TODO: this range could be larger, but right now that's costly because each element is its own UPnP forward
-  # TURN port range (inclusive)
-  turnPortLow = 49152;
-  turnPortHigh = 49167;
-  turnPortRange = lib.range turnPortLow turnPortHigh;
-in
-# XXX(2023/10/15): disabled in favor of Prosody.
-# everything configured below was fine: used ejabberd for several months.
-lib.mkIf false
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "ejabberd"; group = "ejabberd"; path = "/var/lib/ejabberd"; method = "bind"; }
-  ];
-  sane.ports.ports = lib.mkMerge ([
-    {
-      "3478" = {
-        protocol = [ "tcp" "udp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-stun-turn";
-      };
-      "5222" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-client-to-server";
-      };
-      "5223" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpps-client-to-server";  # XMPP over TLS
-      };
-      "5269" = {
-        protocol = [ "tcp" ];
-        visibleTo.wan = true;
-        description = "colin-xmpp-server-to-server";
-      };
-      "5270" = {
-        protocol = [ "tcp" ];
-        visibleTo.wan = true;
-        description = "colin-xmpps-server-to-server";  # XMPP over TLS
-      };
-      "5280" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-bosh";
-      };
-      "5281" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-bosh-https";
-      };
-      "5349" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-stun-turn-over-tls";
-      };
-      "5443" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-web-services";  # file uploads, websockets, admin
-      };
-    }
-  ] ++ (builtins.map
-    (port: {
-      "${builtins.toString port}" = let
-        count = port - turnPortLow + 1;
-        numPorts = turnPortHigh - turnPortLow + 1;
-      in {
-        protocol = [ "tcp" "udp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-xmpp-turn-${builtins.toString count}-of-${builtins.toString numPorts}";
-      };
-    })
-    turnPortRange
-  ));
-
-  # this ejabberd config uses builtin STUN/TURN server, so hack to ensure no other implementation fights for ports
-  services.coturn.enable = false;
-
-  # provide access to certs
-  # TODO: this should just be `acme`. then we also add nginx to the `acme` group.
-  #   why is /var/lib/acme/* owned by `nginx` group??
-  users.users.ejabberd.extraGroups = [ "nginx" ];
-
-  security.acme.certs."uninsane.org".extraDomainNames = [
-    "xmpp.uninsane.org"
-    "muc.xmpp.uninsane.org"
-    "pubsub.xmpp.uninsane.org"
-    "upload.xmpp.uninsane.org"
-    "vjid.xmpp.uninsane.org"
-  ];
-
-  # exists so the XMPP server's cert can obtain altNames for all its resources
-  services.nginx.virtualHosts."xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."muc.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."pubsub.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."upload.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."vjid.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-
-  sane.dns.zones."uninsane.org".inet = {
-    # XXX: SRV records have to point to something with a A/AAAA record; no CNAMEs
-    A."xmpp" =                "%ANATIVE%";
-    CNAME."muc.xmpp" =        "xmpp";
-    CNAME."pubsub.xmpp" =     "xmpp";
-    CNAME."upload.xmpp" =     "xmpp";
-    CNAME."vjid.xmpp" =       "xmpp";
-
-    # _Service._Proto.Name    TTL Class SRV    Priority Weight Port Target
-    # - <https://xmpp.org/extensions/xep-0368.html>
-    # something's requesting the SRV records for muc.xmpp, so let's include it
-    # nothing seems to request XMPP SRVs for the other records (except @)
-    # lower numerical priority field tells clients to prefer this method
-    SRV."_xmpps-client._tcp.muc.xmpp" =       "3 50 5223 xmpp";
-    SRV."_xmpps-server._tcp.muc.xmpp" =       "3 50 5270 xmpp";
-    SRV."_xmpp-client._tcp.muc.xmpp" =        "5 50 5222 xmpp";
-    SRV."_xmpp-server._tcp.muc.xmpp" =        "5 50 5269 xmpp";
-
-    SRV."_xmpps-client._tcp" =                "3 50 5223 xmpp";
-    SRV."_xmpps-server._tcp" =                "3 50 5270 xmpp";
-    SRV."_xmpp-client._tcp" =                 "5 50 5222 xmpp";
-    SRV."_xmpp-server._tcp" =                 "5 50 5269 xmpp";
-
-    SRV."_stun._udp" =                        "5 50 3478 xmpp";
-    SRV."_stun._tcp" =                        "5 50 3478 xmpp";
-    SRV."_stuns._tcp" =                       "5 50 5349 xmpp";
-    SRV."_turn._udp" =                        "5 50 3478 xmpp";
-    SRV."_turn._tcp" =                        "5 50 3478 xmpp";
-    SRV."_turns._tcp" =                       "5 50 5349 xmpp";
-  };
-
-  # TODO: allocate UIDs/GIDs ?
-  services.ejabberd.enable = true;
-  services.ejabberd.configFile = "/var/lib/ejabberd/ejabberd.yaml";
-  systemd.services.ejabberd.preStart = let
-    config-in = pkgs.writeText "ejabberd.yaml.in" (lib.generators.toYAML {} {
-      hosts = [ "uninsane.org" ];
-      # none | emergency | alert | critical | error | warning | notice | info | debug
-      loglevel = "debug";
-      acme.auto = false;
-      certfiles = [ "/var/lib/acme/uninsane.org/full.pem" ];
-      # ca_file = "${pkgs.cacert.unbundled}/etc/ssl/certs/";
-      # ca_file = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
-
-      pam_userinfotype = "jid";
-      acl = {
-        admin.user = [ "colin@uninsane.org" ];
-        local.user_regexp = "";
-        loopback.ip = [ "127.0.0.0/8" "::1/128" ];
-      };
-
-      access_rules = {
-        local.allow = "local";
-        c2s_access.allow = "all";
-        announce.allow = "admin";
-        configure.allow = "admin";
-        muc_create.allow = "local";
-        pubsub_createnode_access.allow = "all";
-        trusted_network.allow = "loopback";
-      };
-
-      # docs: <https://docs.ejabberd.im/admin/configuration/basic/#shaper-rules>
-      shaper_rules = {
-        # setting this to above 1 may break outgoing messages
-        # - maybe some servers rate limit? or just don't understand simultaneous connections?
-        max_s2s_connections = 1;
-        max_user_sessions = 10;
-        max_user_offline_messages = 5000;
-        c2s_shaper.fast = "all";
-        s2s_shaper.med = "all";
-      };
-
-      # docs: <https://docs.ejabberd.im/admin/configuration/basic/#shapers>
-      # this limits the bytes/sec.
-      # for example, burst: 3_000_000 and rate: 100_000 means:
-      # - each client has a BW budget that accumulates 100kB/sec and is capped at 3 MB
-      shaper.fast = 1000000;
-      shaper.med  =  500000;
-      # shaper.fast.rate       =  1000000;
-      # shaper.fast.burst_size = 10000000;
-      # shaper.med.rate        =   500000;
-      # shaper.med.burst_size  =  5000000;
-
-      # see: <https://docs.ejabberd.im/admin/configuration/listen/>
-      # s2s_use_starttls = true;
-      s2s_use_starttls = "optional";
-      # lessens 504: remote-server-timeout errors
-      # see: <https://github.com/processone/ejabberd/issues/3105#issuecomment-562182967>
-      negotiation_timeout = 60;
-
-      listen = [
-        {
-          port = 5222;
-          module = "ejabberd_c2s";
-          shaper = "c2s_shaper";
-          starttls = true;
-          access = "c2s_access";
-        }
-        {
-          port = 5223;
-          module = "ejabberd_c2s";
-          shaper = "c2s_shaper";
-          tls = true;
-          access = "c2s_access";
-        }
-        {
-          port = 5269;
-          module = "ejabberd_s2s_in";
-          shaper = "s2s_shaper";
-        }
-        {
-          port = 5270;
-          module = "ejabberd_s2s_in";
-          shaper = "s2s_shaper";
-          tls = true;
-        }
-        {
-          port = 5443;
-          module = "ejabberd_http";
-          tls = true;
-          request_handlers = {
-            "/admin" = "ejabberd_web_admin";  # TODO: ensure this actually works
-            "/api" = "mod_http_api";  # ejabberd API endpoint (to control server)
-            "/bosh" = "mod_bosh";
-            "/upload" = "mod_http_upload";
-            "/ws" = "ejabberd_http_ws";
-            # "/.well-known/host-meta" = "mod_host_meta";
-            # "/.well-known/host-meta.json" = "mod_host_meta";
-          };
-        }
-        {
-          # STUN+TURN TCP
-          # note that the full port range should be forwarded ("not NAT'd")
-          # `use_turn=true` enables both TURN *and* STUN
-          port = 3478;
-          module = "ejabberd_stun";
-          transport = "tcp";
-          use_turn = true;
-          turn_min_port = turnPortLow;
-          turn_max_port = turnPortHigh;
-          turn_ipv4_address = "%ANATIVE%";
-        }
-        {
-          # STUN+TURN UDP
-          port = 3478;
-          module = "ejabberd_stun";
-          transport = "udp";
-          use_turn = true;
-          turn_min_port = turnPortLow;
-          turn_max_port = turnPortHigh;
-          turn_ipv4_address = "%ANATIVE%";
-        }
-        {
-          # STUN+TURN TLS over TCP
-          port = 5349;
-          module = "ejabberd_stun";
-          transport = "tcp";
-          tls = true;
-          certfile = "/var/lib/acme/uninsane.org/full.pem";
-          use_turn = true;
-          turn_min_port = turnPortLow;
-          turn_max_port = turnPortHigh;
-          turn_ipv4_address = "%ANATIVE%";
-        }
-      ];
-
-      # TODO: enable mod_fail2ban
-      # TODO(low): look into mod_http_fileserver for serving macros?
-      modules = {
-        # mod_adhoc = {};
-        # mod_announce = {
-        #   access = "admin";
-        # };
-        # allows users to set avatars in vCard
-        # - <https://docs.ejabberd.im/admin/configuration/modules/#mod-avatar>
-        mod_avatar = {};
-        mod_caps = {};  # for mod_pubsub
-        mod_carboncopy = {};  # allows multiple clients to receive a user's message
-        # queues messages when recipient is offline, including PEP and presence messages.
-        # compliance test suggests this be enabled
-        mod_client_state = {};
-
-        # mod_conversejs: TODO: enable once on 21.12
-        # allows clients like Dino to discover where to upload files
-        mod_disco.server_info = [
-          {
-            modules = "all";
-            name = "abuse-addresses";
-            urls = [
-              "mailto:admin.xmpp@uninsane.org"
-              "xmpp:colin@uninsane.org"
-            ];
-          }
-          {
-            modules = "all";
-            name = "admin-addresses";
-            urls = [
-              "mailto:admin.xmpp@uninsane.org"
-              "xmpp:colin@uninsane.org"
-            ];
-          }
-        ];
-        mod_http_upload = {
-          host = "upload.xmpp.uninsane.org";
-          hosts = [ "upload.xmpp.uninsane.org" ];
-          put_url = "https://@HOST@:5443/upload";
-          dir_mode = "0750";
-          file_mode = "0750";
-          rm_on_unregister = false;
-        };
-        # allow discoverability of BOSH and websocket endpoints
-        # TODO: enable once on ejabberd 22.05  (presently 21.04)
-        # mod_host_meta = {};
-        mod_jidprep = {};  # probably not needed: lets clients normalize jids
-        mod_last = {};  # allow other users to know when i was last online
-        mod_mam = {
-          # Mnesia is limited to 2GB, better to use an SQL backend
-          # For small servers SQLite is a good fit and is very easy
-          # to configure. Uncomment this when you have SQL configured:
-          # db_type: sql
-          assume_mam_usage = true;
-          default = "always";
-        };
-        mod_muc = {
-          access = [ "allow" ];
-          access_admin = { allow = "admin"; };
-          access_create = "muc_create";
-          access_persistent = "muc_create";
-          access_mam = [ "allow" ];
-          history_size = 100;  # messages to show new participants
-          host = "muc.xmpp.uninsane.org";
-          hosts = [ "muc.xmpp.uninsane.org" ];
-          default_room_options = {
-            anonymous = false;
-            lang = "en";
-            persistent = true;
-            mam = true;
-          };
-        };
-        mod_muc_admin = {};
-        mod_offline = {
-          # store messages for a user when they're offline (TODO: understand multi-client workflow?)
-          access_max_user_messages = "max_user_offline_messages";
-          store_groupchat = true;
-        };
-        mod_ping = {};
-        mod_privacy = {};  # deprecated, but required for `ejabberctl export_piefxis`
-        mod_private = {};  # allow local clients to persist arbitrary data on my server
-        # push notifications to services integrated with e.g. Apple/Android.
-        # default is for a maximum amount of PII to be withheld, since these push notifs
-        # generally traverse 3rd party services. can opt to include message body, etc, though.
-        mod_push = {};
-        # i don't fully understand what this does, but it seems aimed at making push notifs more reliable.
-        mod_push_keepalive = {};
-        mod_roster = {
-          versioning = true;
-        };
-        # docs: <https://docs.ejabberd.im/admin/configuration/modules/#mod-s2s-dialback>
-        # s2s dialback to verify inbound messages
-        # unclear to what degree the XMPP network requires this
-        mod_s2s_dialback = {};
-        mod_shared_roster = {};  # creates groups for @all, @online, and anything manually administered?
-        mod_stream_mgmt = {
-          # resend undelivered messages if the origin client is offline
-          resend_on_timeout = "if_offline";
-        };
-        # fallback for when DNS-based STUN discovery is unsupported.
-        # - see: <https://xmpp.org/extensions/xep-0215.html>
-        # docs: <https://docs.ejabberd.im/admin/configuration/modules/#mod-stun-disco>
-        # people say to just keep this defaulted (i guess ejabberd knows to return its `host` option of uninsane.org?)
-        mod_stun_disco = {};
-        # docs: <https://docs.ejabberd.im/admin/configuration/modules/#mod-vcard>
-        mod_vcard = {
-          allow_return_all = true;  # all users are discoverable (?)
-          host = "vjid.xmpp.uninsane.org";
-          hosts = [ "vjid.xmpp.uninsane.org" ];
-          search = true;
-        };
-        mod_vcard_xupdate = {};  # needed for avatars
-        # docs: <https://docs.ejabberd.im/admin/configuration/modules/#mod-pubsub>
-        mod_pubsub = {
-          #^ needed for avatars
-          access_createnode = "pubsub_createnode_access";
-          host = "pubsub.xmpp.uninsane.org";
-          hosts = [ "pubsub.xmpp.uninsane.org" ];
-          ignore_pep_from_offline = false;
-          last_item_cache = true;
-          plugins = [
-            "pep"
-            "flat"
-          ];
-          force_node_config = {
-            # ensure client bookmarks are private
-            "storage:bookmarks:" = {
-              "access_model" = "whitelist";
-            };
-            "urn:xmpp:avatar:data" = {
-              "access_model" = "open";
-            };
-            "urn:xmpp:avatar:metadata" = {
-              "access_model" = "open";
-            };
-          };
-        };
-        mod_version = {};
-      };
-    });
-    sed = "${pkgs.gnused}/bin/sed";
-  in ''
-    ip=$(cat '${config.sane.services.dyn-dns.ipPath}')
-    # config is 444 (not 644), so we want to write out-of-place and then atomically move
-    # TODO: factor this out into `sane-woop` helper?
-    rm -f /var/lib/ejabberd/ejabberd.yaml.new
-    ${sed} "s/%ANATIVE%/$ip/g" ${config-in} > /var/lib/ejabberd/ejabberd.yaml.new
-    mv /var/lib/ejabberd/ejabberd.yaml{.new,}
-  '';
-
-  sane.services.dyn-dns.restartOnChange = [ "ejabberd.service" ];
-}

hosts/by-name/servo/services/email/default.nix

@@ -1,44 +0,0 @@
-# nix configs to reference:
-# - <https://gitlab.com/simple-nixos-mailserver/nixos-mailserver>
-# - <https://github.com/nix-community/nur-combined/-/tree/master/repos/eh5/machines/srv-m/mail-rspamd.nix>
-#   - postfix / dovecot / rspamd / stalwart-jmap / sogo
-#
-# rspamd:
-# - nixos: <https://nixos.wiki/wiki/Rspamd>
-# - guide: <https://rspamd.com/doc/quickstart.html>
-# - non-nixos example: <https://dataswamp.org/~solene/2021-07-13-smtpd-rspamd.html>
-#
-#
-# my rough understanding of the pieces:
-# - postfix handles SMTP protocol with the rest of the world.
-# - dovecot implements IMAP protocol.
-#   - client auth (i.e. validate that user@uninsane.org is who they claim)
-#   - "folders" (INBOX, JUNK) are internal to dovecot?
-#     or where do folders live, on-disk?
-#
-# - non-local clients (i.e. me) interact with BOTH postfix and dovecot, but primarily dovecot:
-#   - mail reading is done via IMAP (so, dovecot)
-#   - mail sending is done via SMTP/submission port (so, postfix)
-#     - but postfix delegates authorization of that outgoing mail to dovecot, on the server side
-#
-# - local clients (i.e. sendmail) interact only with postfix
-#
-# debugging: general connectivity issues
-# - test that inbound port 25 is unblocked:
-#   - `curl https://canyouseeme.org/ --data 'port=25&IP=185.157.162.178' | grep 'see your service'`
-#     - and retry with port 465, 587
-#     - i think this API requires the queried IP match the source IP
-#   - if necessary, `systemctl stop postfix` and `sudo nc -l 185.157.162.178 25`, then try https://canyouseeme.org
-
-{ ... }:
-{
-  imports = [
-    ./dovecot.nix
-    ./postfix.nix
-  ];
-
-
-  #### SPAM FILTERING
-  # services.rspamd.enable = true;
-  # services.rspamd.postfix.enable = true;
-}

hosts/by-name/servo/services/email/dovecot.nix

@@ -1,145 +0,0 @@
-# dovecot config options: <https://doc.dovecot.org/configuration_manual/>
-#
-# sieve docs:
-# - sieve language examples: <https://doc.dovecot.org/configuration_manual/sieve/examples/>
-# - sieve protocol/language: <https://proton.me/support/sieve-advanced-custom-filters>
-
-{ config, lib, pkgs, ... }:
-{
-  sane.ports.ports."143" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-imap-imap.uninsane.org";
-  };
-  sane.ports.ports."993" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-imaps-imap.uninsane.org";
-  };
-
-  # exists only to manage certs for dovecot
-  services.nginx.virtualHosts."imap.uninsane.org" = {
-    enableACME = true;
-  };
-
-  sane.dns.zones."uninsane.org".inet = {
-    CNAME."imap" = "native";
-  };
-
-  sops.secrets."dovecot_passwd" = {
-    owner = config.users.users.dovecot2.name;
-    # TODO: debug why mail can't be sent without this being world-readable
-    mode = "0444";
-  };
-
-  # inspired by https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/
-  services.dovecot2.enable = true;
-  # services.dovecot2.enableLmtp = true;
-  services.dovecot2.sslServerCert = "/var/lib/acme/imap.uninsane.org/fullchain.pem";
-  services.dovecot2.sslServerKey = "/var/lib/acme/imap.uninsane.org/key.pem";
-  services.dovecot2.enablePAM = false;
-
-  # sieve scripts require me to set a user for... idk why?
-  services.dovecot2.mailUser = "colin";
-  services.dovecot2.mailGroup = "users";
-  users.users.colin.isSystemUser = lib.mkForce false;
-
-  services.dovecot2.extraConfig =
-  let
-    passwdFile = config.sops.secrets.dovecot_passwd.path;
-  in
-    ''
-    passdb {
-      driver = passwd-file
-      args = ${passwdFile}
-    }
-    userdb {
-      driver = passwd-file
-      args = ${passwdFile}
-    }
-
-    # allow postfix to query our auth db
-    service auth {
-      unix_listener auth {
-        mode = 0660
-        user = postfix
-        group = postfix
-      }
-    }
-    auth_mechanisms = plain login
-
-    # accept incoming messaging from postfix
-    # service lmtp {
-    #   unix_listener dovecot-lmtp {
-    #     mode = 0600
-    #     user = postfix
-    #     group = postfix
-    #   }
-    # }
-
-    # plugin {
-    #   sieve_plugins = sieve_imapsieve
-    # }
-
-    mail_debug = yes
-    auth_debug = yes
-    # verbose_ssl = yes
-  '';
-
-  services.dovecot2.mailboxes = {
-    # special-purpose mailboxes: "All" "Archive" "Drafts" "Flagged" "Junk" "Sent" "Trash"
-    # RFC6154 describes these special mailboxes: https://www.ietf.org/rfc/rfc6154.html
-    # how these boxes are treated is 100% up to the client and server to decide.
-    # client behavior:
-    # iOS
-    #   - Drafts: ?
-    #   - Sent: works
-    #   - Trash: works
-    #   - Junk: works ("mark" -> "move to Junk")
-    # aerc
-    #   - Drafts: works
-    #   - Sent: works
-    #   - Trash: no; deleted messages are actually deleted
-    #       use `:move trash` instead
-    #   - Junk: ?
-    # Sent mailbox: all sent messages are copied to it. unclear if this happens server-side or client-side.
-    Drafts = { specialUse = "Drafts"; auto = "create"; };
-    Sent = { specialUse = "Sent"; auto = "create"; };
-    Trash = { specialUse = "Trash"; auto = "create"; };
-    Junk = { specialUse = "Junk"; auto = "create"; };
-  };
-
-  services.dovecot2.mailPlugins = {
-    perProtocol = {
-      # imap.enable = [
-      #   "imap_sieve"
-      # ];
-      lda.enable = [
-        "sieve"
-      ];
-      # lmtp.enable = [
-      #   "sieve"
-      # ];
-    };
-  };
-  services.dovecot2.modules = [
-    pkgs.dovecot_pigeonhole  # enables sieve execution (?)
-  ];
-  services.dovecot2.sieve = {
-    extensions = [ "fileinto" ];
-    # if any messages fail to pass (or lack) DKIM, move them to Junk
-    # XXX the key name ("after") is only used to order sieve execution/ordering
-    scripts.after = builtins.toFile "ensuredkim.sieve" ''
-      require "fileinto";
-
-      if not header :contains "Authentication-Results" "dkim=pass" {
-        fileinto "Junk";
-        stop;
-      }
-    '';
-  };
-
-  systemd.services.dovecot2.serviceConfig.RestartSec = lib.mkForce "15s";  # nixos defaults this to 1s
-}

hosts/by-name/servo/services/email/postfix.nix

@@ -1,198 +0,0 @@
-# postfix config options: <https://www.postfix.org/postconf.5.html>
-
-{ lib, pkgs, ... }:
-
-let
-  submissionOptions = {
-    smtpd_tls_security_level = "encrypt";
-    smtpd_sasl_auth_enable = "yes";
-    smtpd_sasl_type = "dovecot";
-    smtpd_sasl_path = "/run/dovecot2/auth";
-    smtpd_sasl_security_options = "noanonymous";
-    smtpd_sasl_local_domain = "uninsane.org";
-    smtpd_client_restrictions = "permit_sasl_authenticated,reject";
-    # reuse the virtual map so that sender mapping matches recipient mapping
-    smtpd_sender_login_maps = "hash:/var/lib/postfix/conf/virtual";
-    smtpd_sender_restrictions = "reject_sender_login_mismatch";
-    smtpd_recipient_restrictions = "reject_non_fqdn_recipient,permit_sasl_authenticated,reject";
-  };
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode? could be more granular
-    { user = "opendkim"; group = "opendkim"; path = "/var/lib/opendkim"; method = "bind"; }
-    { user = "root"; group = "root"; path = "/var/lib/postfix"; method = "bind"; }
-    { user = "root"; group = "root"; path = "/var/spool/mail"; method = "bind"; }
-    # *probably* don't need these dirs:
-    # "/var/lib/dhparams"          # https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/security/dhparams.nix
-    # "/var/lib/dovecot"
-  ];
-
-  # XXX(2023/10/20): opening these ports in the firewall has the OPPOSITE effect as intended.
-  # these ports are only routable so long as they AREN'T opened.
-  # probably some cursed interaction with network namespaces introduced after 2023/10/10.
-  # sane.ports.ports."25" = {
-  #   protocol = [ "tcp" ];
-  #   # XXX visibleTo.lan effectively means "open firewall, but don't configure any NAT/forwarding"
-  #   visibleTo.lan = true;
-  #   description = "colin-smtp-mx.uninsane.org";
-  # };
-  # sane.ports.ports."465" = {
-  #   protocol = [ "tcp" ];
-  #   visibleTo.lan = true;
-  #   description = "colin-smtps-mx.uninsane.org";
-  # };
-  # sane.ports.ports."587" = {
-  #   protocol = [ "tcp" ];
-  #   visibleTo.lan = true;
-  #   description = "colin-smtps-submission-mx.uninsane.org";
-  # };
-
-  # exists only to manage certs for Postfix
-  services.nginx.virtualHosts."mx.uninsane.org" = {
-    enableACME = true;
-  };
-
-
-  sane.dns.zones."uninsane.org".inet = {
-    MX."@" = "10 mx.uninsane.org.";
-    # XXX: RFC's specify that the MX record CANNOT BE A CNAME
-    A."mx" = "185.157.162.178";
-
-    # Sender Policy Framework:
-    #   +mx     => mail passes if it originated from the MX
-    #   +a      => mail passes if it originated from the A address of this domain
-    #   +ip4:.. => mail passes if it originated from this IP
-    #   -all    => mail fails if none of these conditions were met
-    TXT."@" = "v=spf1 a mx -all";
-
-    # DKIM public key:
-    TXT."mx._domainkey" =
-      "v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkSyMufc2KrRx3j17e/LyB+3eYSBRuEFT8PUka8EDX04QzCwDPdkwgnj3GNDvnB5Ktb05Cf2SJ/S1OLqNsINxJRWtkVfZd/C339KNh9wrukMKRKNELL9HLUw0bczOI4gKKFqyrRE9qm+4csCMAR79Te9FCjGV/jVnrkLdPT0GtFwIDAQAB"
-    ;
-
-    # DMARC fields <https://datatracker.ietf.org/doc/html/rfc7489>:
-    #   p=none|quarantine|reject: what to do with failures
-    #   sp = p but for subdomains
-    #   rua = where to send aggregrate reports
-    #   ruf = where to send individual failure reports
-    #   fo=0|1|d|s  controls WHEN to send failure reports
-    #     (1=on bad alignment; d=on DKIM failure; s=on SPF failure);
-    # Additionally:
-    #   adkim=r|s  (is DKIM relaxed [default] or strict)
-    #   aspf=r|s   (is SPF relaxed [default] or strict)
-    #   pct = sampling ratio for punishing failures (default 100 for 100%)
-    #   rf = report format
-    #   ri = report interval
-    TXT."_dmarc" =
-      "v=DMARC1;p=quarantine;sp=reject;rua=mailto:admin+mail@uninsane.org;ruf=mailto:admin+mail@uninsane.org;fo=1:d:s"
-    ;
-  };
-
-  services.postfix.enable = true;
-  services.postfix.hostname = "mx.uninsane.org";
-  services.postfix.origin = "uninsane.org";
-  services.postfix.destination = [ "localhost" "uninsane.org" ];
-  services.postfix.sslCert = "/var/lib/acme/mx.uninsane.org/fullchain.pem";
-  services.postfix.sslKey = "/var/lib/acme/mx.uninsane.org/key.pem";
-
-  services.postfix.virtual = ''
-    notify.matrix@uninsane.org matrix-synapse
-    @uninsane.org colin
-  '';
-
-  services.postfix.config = {
-    # smtpd_milters = local:/run/opendkim/opendkim.sock
-    # milter docs: http://www.postfix.org/MILTER_README.html
-    # mail filters for receiving email and from authorized SMTP clients (i.e. via submission)
-    # smtpd_milters = inet:185.157.162.190:8891
-    # opendkim.sock will add a Authentication-Results header, with `dkim=pass|fail|...` value to received messages
-    smtpd_milters = "unix:/run/opendkim/opendkim.sock";
-    # mail filters for sendmail
-    non_smtpd_milters = "$smtpd_milters";
-
-    # what to do when a milter exits unexpectedly:
-    milter_default_action = "accept";
-
-    inet_protocols = "ipv4";
-    smtp_tls_security_level = "may";
-
-    # hand received mail over to dovecot so that it can run sieves & such
-    mailbox_command = ''${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$SENDER" -a "$RECIPIENT"'';
-
-    # hand received mail over to dovecot
-    # virtual_alias_maps = [
-    #   "hash:/etc/postfix/virtual"
-    # ];
-    # mydestination = "";
-    # virtual_mailbox_domains = [ "localhost" "uninsane.org" ];
-    # # virtual_mailbox_maps = "hash:/etc/postfix/virtual";
-    # virtual_transport = "lmtp:unix:/run/dovecot2/dovecot-lmtp";
-
-    # anti-spam options: <https://www.postfix.org/SMTPD_ACCESS_README.html>
-    # reject_unknown_sender_domain: causes postfix to `dig <sender> MX` and make sure that exists.
-    # but may cause problems receiving mail from google & others who load-balance?
-    # - <https://unix.stackexchange.com/questions/592131/how-to-reject-email-from-unknown-domains-with-postfix-on-centos>
-    # smtpd_sender_restrictions = reject_unknown_sender_domain
-  };
-
-  services.postfix.enableSubmission = true;
-  services.postfix.submissionOptions = submissionOptions;
-  services.postfix.enableSubmissions = true;
-  services.postfix.submissionsOptions = submissionOptions;
-
-  systemd.services.postfix.after = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.postfix.partOf = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.postfix.serviceConfig = {
-    # run this behind the OVPN static VPN
-    NetworkNamespacePath = "/run/netns/ovpns";
-  };
-
-
-  #### OPENDKIM
-
-  services.opendkim.enable = true;
-  # services.opendkim.domains = "csl:uninsane.org";
-  services.opendkim.domains = "uninsane.org";
-
-  # we use a custom (inet) socket, because the default perms
-  # of the unix socket don't allow postfix to connect.
-  # this sits on the machine-local 10.0.1 interface because it's the closest
-  # thing to a loopback interface shared by postfix and opendkim netns.
-  # services.opendkim.socket = "inet:8891@185.157.162.190";
-  # services.opendkim.socket = "local:/run/opendkim.sock";
-  # selectors can be used to disambiguate sender machines.
-  # keeping this the same as the hostname seems simplest
-  services.opendkim.selector = "mx";
-
-  systemd.services.opendkim.after = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.opendkim.partOf = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.opendkim.serviceConfig = {
-    # run this behind the OVPN static VPN
-    NetworkNamespacePath = "/run/netns/ovpns";
-    # /run/opendkim/opendkim.sock needs to be rw by postfix
-    UMask = lib.mkForce "0011";
-  };
-
-
-  #### OUTGOING MESSAGE REWRITING:
-  services.postfix.enableHeaderChecks = true;
-  services.postfix.headerChecks = [
-    # intercept gitea registration confirmations and manually screen them
-    {
-      # headerChecks are somehow ignorant of alias rules: have to redirect to a real user
-      action = "REDIRECT colin@uninsane.org";
-      pattern = "/^Subject: Please activate your account/";
-    }
-    # intercept Matrix registration confirmations
-    {
-      action = "REDIRECT colin@uninsane.org";
-      pattern = "/^Subject:.*Validate your email/";
-    }
-    # XXX postfix only supports performing ONE action per header.
-    # {
-    #   action = "REPLACE Subject: git application: Please activate your account";
-    #   pattern = "/^Subject:.*activate your account/";
-    # }
-  ];
-}

hosts/by-name/servo/services/export/default.nix

@@ -1,53 +0,0 @@
-{ config, ... }:
-{
-  imports = [
-    ./nfs.nix
-    ./sftpgo.nix
-  ];
-
-  users.groups.export = {};
-
-  fileSystems."/var/export/media" = {
-    # everything in here could be considered publicly readable (based on the viewer's legal jurisdiction)
-    device = "/var/media";
-    options = [ "rbind" ];
-  };
-  # fileSystems."/var/export/playground" = {
-  #   device = config.fileSystems."/mnt/persist/ext".device;
-  #   fsType = "btrfs";
-  #   options = [
-  #     "subvol=export-playground"
-  #     "compress=zstd"
-  #     "defaults"
-  #   ];
-  # };
-  # N.B.: the backing directory should be manually created here **as a btrfs subvolume** and with a quota.
-  # - `sudo btrfs subvolume create /mnt/persist/ext/persist/var/export/playground`
-  # - `sudo btrfs quota enable /mnt/persist/ext/persist/var/export/playground`
-  # - `sudo btrfs quota rescan -sw /mnt/persist/ext/persist/var/export/playground`
-  # to adjust the limits (which apply at the block layer, i.e. post-compression):
-  # - `sudo btrfs qgroup limit 20G /mnt/persist/ext/persist/var/export/playground`
-  # to query the quota/status:
-  # - `sudo btrfs qgroup show -re /var/export/playground`
-  sane.persist.sys.byStore.ext = [
-    { user = "root"; group = "export"; mode = "0775"; path = "/var/export/playground"; method = "bind"; }
-  ];
-
-  sane.fs."/var/export/README.md" = {
-    wantedBy = [ "nfs.service" "sftpgo.service" ];
-    file.text = ''
-      - media/         read-only:  Videos, Music, Books, etc
-      - playground/    read-write: use it to share files with other users of this server
-    '';
-  };
-
-  sane.fs."/var/export/playground/README.md" = {
-    wantedBy = [ "nfs.service" "sftpgo.service" ];
-    file.text = ''
-      this directory is intentionally read+write by anyone with access (i.e. on the LAN).
-      - share files
-      - write poetry
-      - be a friendly troll
-    '';
-  };
-}

hosts/by-name/servo/services/export/nfs.nix

@@ -1,110 +0,0 @@
-# docs:
-# - <https://nixos.wiki/wiki/NFS>
-# - <https://wiki.gentoo.org/wiki/Nfs-utils>
-# system files:
-# - /etc/exports
-# system services:
-# - nfs-server.service
-# - nfs-idmapd.service
-# - nfs-mountd.service
-# - nfsdcld.service
-# - rpc-statd.service
-# - rpcbind.service
-#
-# TODO: force files to be 755, or 750.
-# - could maybe be done with some mount option?
-
-{ config, lib, ... }:
-{
-  services.nfs.server.enable = true;
-
-  # see which ports NFS uses with:
-  # - `rpcinfo -p`
-  sane.ports.ports."111" = {
-    protocol = [ "tcp" "udp" ];
-    visibleTo.lan = true;
-    description = "NFS server portmapper";
-  };
-  sane.ports.ports."2049" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    description = "NFS server";
-  };
-  sane.ports.ports."4000" = {
-    protocol = [ "udp" ];
-    visibleTo.lan = true;
-    description = "NFS server status daemon";
-  };
-  sane.ports.ports."4001" = {
-    protocol = [ "tcp" "udp" ];
-    visibleTo.lan = true;
-    description = "NFS server lock daemon";
-  };
-  sane.ports.ports."4002" = {
-    protocol = [ "tcp" "udp" ];
-    visibleTo.lan = true;
-    description = "NFS server mount daemon";
-  };
-
-  # NFS4 allows these to float, but NFS3 mandates specific ports, so fix them for backwards compat.
-  services.nfs.server.lockdPort = 4001;
-  services.nfs.server.mountdPort = 4002;
-  services.nfs.server.statdPort = 4000;
-
-  # format:
-  #   fspoint	visibility(options)
-  # options:
-  # - see: <https://wiki.gentoo.org/wiki/Nfs-utils#Exports>
-  # - see [man 5 exports](https://linux.die.net/man/5/exports)
-  # - insecure:  require clients use src port > 1024
-  # - rw, ro (default)
-  # - async, sync (default)
-  # - no_subtree_check (default), subtree_check: verify not just that files requested by the client live
-  #     in the expected fs, but also that they live under whatever subdirectory of that fs is exported.
-  # - no_root_squash, root_squash (default): map requests from uid 0 to user `nobody`.
-  # - crossmnt:  reveal filesystems that are mounted under this endpoint
-  # - fsid:  must be zero for the root export
-  #   - fsid=root  is alias for fsid=0
-  # - mountpoint[=/path]:  only export the directory if it's a mountpoint. used to avoid exporting failed mounts.
-  # - all_squash: rewrite all client requests such that they come from anonuid/anongid
-  #   - any files a user creates are owned by local anonuid/anongid.
-  #   - users can read any local file which anonuid/anongid would be able to read.
-  #   - users can't chown to/away from anonuid/anongid.
-  #   - users can chmod files they own, to anything (making them unreadable to non-`nfsuser` export users, like FTP).
-  #   - `stat` remains unchanged, returning the real UIDs/GIDs to the client.
-  #     - thus programs which check `uid` or `gid` before trying an operation may incorrectly conclude they can't perform some op.
-  #
-  # 10.0.0.0/8 to export both to LAN (readonly, unencrypted) and wg vpn (read-write, encrypted)
-  services.nfs.server.exports =
-  let
-    fmtExport = { export, baseOpts, extraLanOpts ? [], extraVpnOpts ? [] }:
-      let
-        always = [ "subtree_check" ];
-        lanOpts = always ++ baseOpts ++ extraLanOpts;
-        vpnOpts = always ++ baseOpts ++ extraVpnOpts;
-      in "${export} 10.78.79.0/22(${lib.concatStringsSep "," lanOpts}) 10.0.10.0/24(${lib.concatStringsSep "," vpnOpts})";
-  in lib.concatStringsSep "\n" [
-    (fmtExport {
-      export = "/var/export";
-      baseOpts = [ "crossmnt" "fsid=root" ];
-      extraLanOpts = [ "ro" ];
-      extraVpnOpts = [ "rw" "no_root_squash" ];
-    })
-    (fmtExport {
-      export = "/var/export/playground";
-      baseOpts = [
-        "mountpoint"
-        "all_squash"
-        "rw"
-        "anonuid=${builtins.toString config.users.users.nfsuser.uid}"
-        "anongid=${builtins.toString config.users.groups.export.gid}"
-      ];
-    })
-  ];
-
-  users.users.nfsuser = {
-    description = "virtual user for anonymous NFS operations";
-    group = "export";
-    isSystemUser = true;
-  };
-}

hosts/by-name/servo/services/export/sftpgo.nix

@@ -1,186 +0,0 @@
-# docs:
-# - <https://github.com/drakkan/sftpgo>
-# - config options: <https://github.com/drakkan/sftpgo/blob/main/docs/full-configuration.md>
-# - config defaults: <https://github.com/drakkan/sftpgo/blob/main/sftpgo.json>
-# - nixos options: <repo:nixos/nixpkgs:nixos/modules/services/web-apps/sftpgo.nix>
-# - nixos example: <repo:nixos/nixpkgs:nixos/tests/sftpgo.nix>
-#
-# sftpgo is a FTP server that also supports WebDAV, SFTP, and web clients.
-#
-# TODO: change umask so sftpgo-created files default to 644.
-# - it does indeed appear that the 600 is not something sftpgo is explicitly doing.
-
-
-{ config, lib, pkgs, sane-lib, ... }:
-let
-  # user permissions:
-  # - see <repo:drakkan/sftpgo:internal/dataprovider/user.go>
-  # - "*" = grant all permissions
-  # - read-only perms:
-  #   - "list" = list files and directories
-  #   - "download"
-  # - rw perms:
-  #   - "upload"
-  #   - "overwrite" = allow uploads to replace existing files
-  #   - "delete" = delete files and directories
-  #     - "delete_files"
-  #     - "delete_dirs"
-  #   - "rename" = rename files and directories
-  #     - "rename_files"
-  #     - "rename_dirs"
-  #   - "create_dirs"
-  #   - "create_symlinks"
-  #   - "chmod"
-  #   - "chown"
-  #   - "chtimes" = change atime/mtime (access and modification times)
-  #
-  # home_dir:
-  # - it seems (empirically) that a user can't cd above their home directory.
-  #   though i don't have a reference for that in the docs.
-  authResponseSuccess = {
-    status = 1;
-    username = "anonymous";
-    expiration_date = 0;
-    home_dir = "/var/export";
-    # uid/gid 0 means to inherit sftpgo uid.
-    # - i.e. users can't read files which Linux user `sftpgo` can't read
-    # - uploaded files belong to Linux user `sftpgo`
-    # other uid/gid values aren't possible for localfs backend, unless i let sftpgo use `sudo`.
-    uid = 0;
-    gid = 0;
-    # uid = 65534;
-    # gid = 65534;
-    max_sessions = 0;
-    # quota_*: 0 means to not use SFTP's quota system
-    quota_size = 0;
-    quota_files = 0;
-    permissions = {
-      "/" = [ "list" "download" ];
-      "/playground" = [
-        # read-only:
-        "list"
-        "download"
-        # write:
-        "upload"
-        "overwrite"
-        "delete"
-        "rename"
-        "create_dirs"
-        "create_symlinks"
-        # intentionally omitted:
-        # "chmod"
-        # "chown"
-        # "chtimes"
-      ];
-    };
-    upload_bandwidth = 0;
-    download_bandwidth = 0;
-    filters = {
-      allowed_ip = [];
-      denied_ip = [];
-    };
-    public_keys = [];
-    # other fields:
-    # ? groups
-    # ? virtual_folders
-  };
-  authResponseFail = {
-    username = "";
-  };
-  authSuccessJson = pkgs.writeText "sftp-auth-success.json" (builtins.toJSON authResponseSuccess);
-  authFailJson = pkgs.writeText "sftp-auth-fail.json" (builtins.toJSON authResponseFail);
-  unwrappedAuthProgram = pkgs.static-nix-shell.mkBash {
-    pname = "sftpgo_external_auth_hook";
-    srcRoot = ./.;
-    pkgs = [ "coreutils" ];
-  };
-  authProgram = pkgs.writeShellScript "sftpgo-auth-hook" ''
-    ${unwrappedAuthProgram}/bin/sftpgo_external_auth_hook ${authFailJson} ${authSuccessJson}
-  '';
-in
-{
-  # Client initiates a FTP "control connection" on port 21.
-  # - this handles the client -> server commands, and the server -> client status, but not the actual data
-  # - file data, directory listings, etc need to be transferred on an ephemeral "data port".
-  # - 50000-50100 is a common port range for this.
-  sane.ports.ports = {
-    "21" = {
-      protocol = [ "tcp" ];
-      visibleTo.lan = true;
-      description = "colin-FTP server";
-    };
-  } // (sane-lib.mapToAttrs
-    (port: {
-      name = builtins.toString port;
-      value = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        description = "colin-FTP server data port range";
-      };
-    })
-    (lib.range 50000 50100)
-  );
-
-  services.sftpgo = {
-    enable = true;
-    group = "export";
-    settings = {
-      ftpd = {
-        bindings = [
-          {
-            # binding this means any wireguard client can connect
-            address = "10.0.10.5";
-            port = 21;
-            debug = true;
-          }
-          {
-            # binding this means any LAN client can connect
-            address = "10.78.79.51";
-            port = 21;
-            debug = true;
-          }
-        ];
-
-        # active mode is susceptible to "bounce attacks", without much benefit over passive mode
-        disable_active_mode = true;
-        hash_support = true;
-        passive_port_range = {
-          start = 50000;
-          end = 50100;
-        };
-
-        banner = ''
-          Welcome, friends, to Colin's read-only FTP server! Also available via NFS on the same host.
-          Username: "anonymous"
-          Password: "anonymous"
-          CONFIGURE YOUR CLIENT FOR "PASSIVE" mode, e.g. `ftp --passive uninsane.org`
-          Please let me know if anything's broken or not as it should be. Otherwise, browse and DL freely :)
-        '';
-
-      };
-      data_provider = {
-        driver = "memory";
-        external_auth_hook = "${authProgram}";
-        # track_quota:
-        # - 0: disable quota tracking
-        # - 1: quota is updated on every upload/delete, even if user has no quota restriction
-        # - 2: quota is updated on every upload/delete, but only if user/folder has a quota restriction  (default, i think)
-        # track_quota = 2;
-      };
-    };
-  };
-
-  users.users.sftpgo.extraGroups = [ "export" ];
-
-  systemd.services.sftpgo = {
-    after = [ "network-online.target" ];
-    wants = [ "network-online.target" ];
-    serviceConfig = {
-      ReadOnlyPaths = [ "/var/export" ];
-      ReadWritePaths = [ "/var/export/playground" ];
-
-      Restart = "always";
-      RestartSec = "20s";
-    };
-  };
-}

hosts/by-name/servo/services/export/sftpgo_external_auth_hook

@@ -1,23 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i bash -p coreutils
-# vim: set filetype=bash :
-#
-# available environment variables:
-# - SFTPGO_AUTHD_USERNAME
-# - SFTPGO_AUTHD_USER
-# - SFTPGO_AUTHD_IP
-# - SFTPGO_AUTHD_PROTOCOL  = { "DAV", "FTP", "HTTP", "SSH" }
-# - SFTPGO_AUTHD_PASSWORD
-# - SFTPGO_AUTHD_PUBLIC_KEY
-# - SFTPGO_AUTHD_KEYBOARD_INTERACTIVE
-# - SFTPGO_AUTHD_TLS_CERT
-#
-#
-# call with <script_name> /path/to/fail/response.json /path/to/success/response.json
-
-
-if [ "$SFTPGO_AUTHD_USERNAME" = "anonymous" ]; then
-  cat "$2"
-else
-  cat "$1"
-fi

hosts/by-name/servo/services/freshrss.nix

@@ -1,63 +0,0 @@
-# import feeds with e.g.
-# ```console
-# $ nix build '.#nixpkgs.freshrss'
-# $ sudo -u freshrss -g freshrss FRESHRSS_DATA_PATH=/var/lib/freshrss ./result/cli/import-for-user.php --user admin --filename /home/colin/.config/newsflashFeeds.opml
-# ```
-#
-# export feeds with
-# ```console
-# $ sudo -u freshrss -g freshrss FRESHRSS_DATA_PATH=/var/lib/freshrss ./result/cli/export-opml-for-user.php --user admin
-# ```
-
-{ config, lib, pkgs, sane-lib, ... }:
-{
-  sops.secrets."freshrss_passwd" = {
-    owner = config.users.users.freshrss.name;
-    mode = "0400";
-  };
-  sane.persist.sys.byStore.plaintext = [
-    { user = "freshrss"; group = "freshrss"; path = "/var/lib/freshrss"; method = "bind"; }
-  ];
-
-  services.freshrss.enable = true;
-  services.freshrss.baseUrl = "https://rss.uninsane.org";
-  services.freshrss.virtualHost = "rss.uninsane.org";
-  services.freshrss.passwordFile = config.sops.secrets.freshrss_passwd.path;
-
-  systemd.services.freshrss-import-feeds =
-  let
-    feeds = sane-lib.feeds;
-    fresh = config.systemd.services.freshrss-config;
-    all-feeds = config.sane.feeds;
-    wanted-feeds = feeds.filterByFormat ["text" "image"] all-feeds;
-    opml = pkgs.writeText "sane-freshrss.opml" (feeds.feedsToOpml wanted-feeds);
-  in {
-    inherit (fresh) wantedBy environment;
-    serviceConfig = {
-      inherit (fresh.serviceConfig) Type User Group StateDirectory WorkingDirectory
-        # hardening options
-        CapabilityBoundingSet DeviceAllow LockPersonality NoNewPrivileges PrivateDevices PrivateTmp PrivateUsers ProcSubset ProtectClock ProtectControlGroups ProtectHome ProtectHostname ProtectKernelLogs ProtectKernelModules ProtectKernelTunables ProtectProc ProtectSystem RemoveIPC RestrictNamespaces RestrictRealtime RestrictSUIDSGID SystemCallArchitectures SystemCallFilter UMask;
-    };
-    description = "import sane RSS feed list";
-    after = [ "freshrss-config.service" ];
-    script = ''
-      # easiest way to preserve feeds: delete the user, recreate it, import feeds
-      ${pkgs.freshrss}/cli/delete-user.php --user colin || true
-      ${pkgs.freshrss}/cli/create-user.php --user colin --password "$(cat ${config.services.freshrss.passwordFile})" || true
-      ${pkgs.freshrss}/cli/import-for-user.php --user colin --filename ${opml}
-    '';
-  };
-
-  # the default ("*:0/5") is to run every 5 minutes.
-  # `systemctl list-timers` to show
-  systemd.services.freshrss-updater.startAt = lib.mkForce "*:3/30";
-
-  services.nginx.virtualHosts."rss.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    # the routing is handled by services.freshrss.virtualHost
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."rss" = "native";
-}

hosts/by-name/servo/services/gitea.nix

@@ -1,131 +0,0 @@
-# config options: <https://docs.gitea.io/en-us/administration/config-cheat-sheet/>
-{ config, pkgs, lib, ... }:
-
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode? could be more granular
-    { user = "git"; group = "gitea"; path = "/var/lib/gitea"; method = "bind"; }
-  ];
-  services.gitea.enable = true;
-  services.gitea.user = "git";  # default is 'gitea'
-  services.gitea.database.type = "postgres";
-  services.gitea.database.user = "git";
-  services.gitea.appName = "Perfectly Sane Git";
-  # services.gitea.disableRegistration = true;
-
-  services.gitea.database.createDatabase = false;  #< silence warning which wants db user and name to be equal
-  # TODO: remove this after merge: <https://github.com/NixOS/nixpkgs/pull/268849>
-  services.gitea.database.socket = "/run/postgresql";  #< would have been set if createDatabase = true
-
-  # gitea doesn't create the git user
-  users.users.git = {
-    description = "Gitea Service";
-    home = "/var/lib/gitea";
-    useDefaultShell = true;
-    group = "gitea";
-    isSystemUser = true;
-    # sendmail access (not 100% sure if this is necessary)
-    extraGroups = [ "postdrop" ];
-  };
-
-  services.gitea.settings = {
-    # options: "Trace", "Debug", "Info", "Warn", "Error", "Critical"
-    log.LEVEL = "Warn";
-    server = {
-      # options: "home", "explore", "organizations", "login" or URL fragment (or full URL)
-      LANDING_PAGE = "explore";
-      DOMAIN = "git.uninsane.org";
-      ROOT_URL = "https://git.uninsane.org/";
-    };
-    service = {
-      # timeout for email approval. 5760 = 4 days
-      ACTIVE_CODE_LIVE_MINUTES = 5760;
-      # REGISTER_EMAIL_CONFIRM = false;
-      # REGISTER_MANUAL_CONFIRM = true;
-      REGISTER_EMAIL_CONFIRM = true;
-      # not sure what this notified on?
-      ENABLE_NOTIFY_MAIL = true;
-      # defaults to image-based captcha.
-      # also supports recaptcha (with custom URLs) or hCaptcha.
-      ENABLE_CAPTCHA = true;
-      NOREPLY_ADDRESS = "noreply.anonymous.git@uninsane.org";
-    };
-    session.COOKIE_SECURE = true;
-    repository = {
-      DEFAULT_BRANCH = "master";
-    };
-    other = {
-      SHOW_FOOTER_TEMPLATE_LOAD_TIME = false;
-    };
-    ui = {
-      # options: "auto", "gitea", "arc-green"
-      DEFAULT_THEME = "arc-green";
-      # cache frontend assets if true
-      # USE_SERVICE_WORKER = true;
-    };
-    #"ui.meta" = ... to customize html author/description/etc
-    mailer = {
-      # alternative is to use nixos-level config:
-      # services.gitea.mailerPasswordFile = ...
-      ENABLED = true;
-      MAILER_TYPE = "sendmail";
-      FROM = "notify.git@uninsane.org";
-      SENDMAIL_PATH = "${pkgs.postfix}/bin/sendmail";
-    };
-    time = {
-      # options: ANSIC, UnixDate, RubyDate, RFC822, RFC822Z, RFC850, RFC1123, RFC1123Z, RFC3339, RFC3339Nano, Kitchen, Stamp, StampMilli, StampMicro, StampNano
-      # docs: https://pkg.go.dev/time#pkg-constants
-      FORMAT = "RFC3339";
-    };
-  };
-
-  systemd.services.gitea.serviceConfig = {
-    # nix default is AF_UNIX AF_INET AF_INET6.
-    # we need more protos for sendmail to work. i thought it only needed +AF_LOCAL, but that didn't work.
-    RestrictAddressFamilies = lib.mkForce "~";
-    # add maildrop to allow sendmail to work
-    ReadWritePaths = lib.mkForce [
-      "/var/lib/postfix/queue/maildrop"
-      "/var/lib/gitea"
-    ];
-  };
-
-  # hosted git (web view and for `git <cmd>` use
-  # TODO: enable publog?
-  services.nginx.virtualHosts."git.uninsane.org" = {
-    forceSSL = true;  # gitea complains if served over a different protocol than its config file says
-    enableACME = true;
-    # inherit kTLS;
-
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:3000";
-    };
-    # gitea serves all `raw` files as content-type: plain, but i'd like to serve them as their actual content type.
-    # or at least, enough to make specific pages viewable (serving unoriginal content as arbitrary content type is dangerous).
-    locations."~ ^/colin/phone-case-cq/raw/.*.html" = {
-      proxyPass = "http://127.0.0.1:3000";
-      extraConfig = ''
-        proxy_hide_header Content-Type;
-        default_type text/html;
-        add_header Content-Type text/html;
-      '';
-    };
-    locations."~ ^/colin/phone-case-cq/raw/.*.js" = {
-      proxyPass = "http://127.0.0.1:3000";
-      extraConfig = ''
-        proxy_hide_header Content-Type;
-        default_type text/html;
-        add_header Content-Type text/javascript;
-      '';
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."git" = "native";
-
-  sane.ports.ports."22" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-git@git.uninsane.org";
-  };
-}

hosts/by-name/servo/services/goaccess.nix

@@ -1,68 +0,0 @@
-{ pkgs, ... }:
-{
-  # based on <https://bytes.fyi/real-time-goaccess-reports-with-nginx/>
-  # log-format setting can be derived with this tool if custom:
-  # - <https://github.com/stockrt/nginx2goaccess>
-  # config options:
-  # - <https://github.com/allinurl/goaccess/blob/master/config/goaccess.conf>
-
-  systemd.services.goaccess = {
-    description = "GoAccess server monitoring";
-    serviceConfig = {
-      ExecStart = ''
-        ${pkgs.goaccess}/bin/goaccess \
-          -f /var/log/nginx/public.log \
-          --log-format=VCOMBINED \
-          --real-time-html \
-          --html-refresh=30 \
-          --no-query-string \
-          --anonymize-ip \
-          --ignore-panel=HOSTS \
-          --ws-url=wss://sink.uninsane.org:443/ws \
-          --port=7890 \
-          -o /var/lib/uninsane/sink/index.html
-      '';
-      ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
-      Type = "simple";
-      Restart = "on-failure";
-      RestartSec = "10s";
-
-      # hardening
-      WorkingDirectory = "/tmp";
-      NoNewPrivileges = true;
-      PrivateTmp = true;
-      ProtectHome = "read-only";
-      ProtectSystem = "strict";
-      SystemCallFilter = "~@clock @cpu-emulation @debug @keyring @memlock @module @mount @obsolete @privileged @reboot @resources @setuid @swap @raw-io";
-      ReadOnlyPaths = "/";
-      ReadWritePaths = [ "/proc/self" "/var/lib/uninsane/sink" ];
-      PrivateDevices = "yes";
-      ProtectKernelModules = "yes";
-      ProtectKernelTunables = "yes";
-    };
-    after = [ "network.target" ];
-    wantedBy = [ "multi-user.target" ];
-  };
-
-  # server statistics
-  services.nginx.virtualHosts."sink.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    root = "/var/lib/uninsane/sink";
-
-    locations."/ws" = {
-      proxyPass = "http://127.0.0.1:7890";
-      # XXX not sure how much of this is necessary
-      extraConfig = ''
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection $connection_upgrade;
-        proxy_buffering off;
-        proxy_read_timeout 7d;
-      '';
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."sink" = "native";
-}

hosts/by-name/servo/services/ipfs.nix

@@ -1,93 +0,0 @@
-# admin:
-# - view stats:
-#   - sudo -u ipfs -g ipfs ipfs -c /var/lib/ipfs/ stats bw
-#   - sudo -u ipfs -g ipfs ipfs -c /var/lib/ipfs/ stats dht
-#   - sudo -u ipfs -g ipfs ipfs -c /var/lib/ipfs/ bitswap stat
-# - number of open peer connections:
-#   - sudo -u ipfs -g ipfs ipfs -c /var/lib/ipfs/ swarm peers | wc -l
-
-{ lib, ... }:
-
-lib.mkIf false # i don't actively use ipfs anymore
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode? could be more granular
-    { user = "261"; group = "261"; path = "/var/lib/ipfs"; method = "bind"; }
-  ];
-
-  networking.firewall.allowedTCPPorts = [ 4001 ];
-  networking.firewall.allowedUDPPorts = [ 4001 ];
-
-  services.nginx.virtualHosts."ipfs.uninsane.org" = {
-    # don't default to ssl upgrades, since this may be dnslink'd from a different domain.
-    # ideally we'd disable ssl entirely, but some places assume it?
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:8080";
-      extraConfig = ''
-        proxy_set_header Host $host;
-        proxy_set_header X-Ipfs-Gateway-Prefix "";
-      '';
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."ipfs" = "native";
-
-  # services.ipfs.enable = true;
-  services.kubo.localDiscovery = true;
-  services.kubo.settings = {
-    Addresses = {
-      Announce = [
-        # "/dns4/ipfs.uninsane.org/tcp/4001"
-        "/dns4/ipfs.uninsane.org/udp/4001/quic"
-      ];
-      Swarm = [
-        # "/dns4/ipfs.uninsane.org/tcp/4001"
-        # "/ip4/0.0.0.0/tcp/4001"
-        "/dns4/ipfs.uninsane.org/udp/4001/quic"
-        "/ip4/0.0.0.0/udp/4001/quic"
-      ];
-    };
-    Gateway = {
-      # the gateway can only be used to serve content already replicated on this host
-      NoFetch = true;
-    };
-    Swarm = {
-      ConnMgr = {
-        # maintain between LowWater and HighWater peer connections
-        # taken from: https://github.com/ipfs/ipfs-desktop/pull/2055
-        # defaults are 600-900: https://github.com/ipfs/kubo/blob/master/docs/config.md#swarmconnmgr
-        LowWater = 20;
-        HighWater = 40;
-        # default is 20s. i guess more grace period = less churn
-        GracePeriod = "1m";
-      };
-      ResourceMgr = {
-        # docs: https://github.com/libp2p/go-libp2p-resource-manager#resource-scopes
-        Enabled = true;
-        Limits = {
-          System = {
-            Conns = 196;
-            ConnsInbound = 128;
-            ConnsOutbound = 128;
-            FD = 512;
-            Memory = 1073741824;  # 1GiB
-            Streams = 1536;
-            StreamsInbound = 1024;
-            StreamsOutbound = 1024;
-          };
-        };
-      };
-      Transports = {
-        Network = {
-          # disable TCP, force QUIC, for lighter resources
-          TCP = false;
-          QUIC = true;
-        };
-      };
-    };
-  };
-}

hosts/by-name/servo/services/jackett.nix

@@ -1,33 +0,0 @@
-{ ... }:
-
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode? we only need this to save Indexer creds ==> migrate to config?
-    { user = "root"; group = "root"; path = "/var/lib/jackett"; method = "bind"; }
-  ];
-  services.jackett.enable = true;
-
-  systemd.services.jackett.after = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.jackett.partOf = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.jackett.serviceConfig = {
-    # run this behind the OVPN static VPN
-    NetworkNamespacePath = "/run/netns/ovpns";
-    # patch jackett to listen on the public interfaces
-    # ExecStart = lib.mkForce "${pkgs.jackett}/bin/Jackett --NoUpdates --DataFolder /var/lib/jackett/.config/Jackett --ListenPublic";
-  };
-
-  # jackett torrent search
-  services.nginx.virtualHosts."jackett.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    locations."/" = {
-      # proxyPass = "http://ovpns.uninsane.org:9117";
-      proxyPass = "http://10.0.1.6:9117";
-      recommendedProxySettings = true;
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."jackett" = "native";
-}
-

hosts/by-name/servo/services/jellyfin.nix

@@ -1,127 +0,0 @@
-# configuration options (today i don't store my config in nix):
-#
-# - jellyfin-web can be statically configured (result/share/jellyfin-web/config.json)
-#   - <https://jellyfin.org/docs/general/clients/web-config>
-#   - configure server list, plugins, "menuLinks", colors
-#
-# - jellfyin server is configured in /var/lib/jellfin/
-#   - root/default/<LibraryType>/
-#     - <LibraryName>.mblink: contains the directory name where this library lives
-#     - options.xml: contains preferences which were defined in the web UI during import
-#       - e.g. `EnablePhotos`, `EnableChapterImageExtraction`, etc.
-#   - config/encoding.xml: transcoder settings
-#   - config/system.xml: misc preferences like log file duration, audiobook resume settings, etc.
-#   - data/jellyfin.db: maybe account definitions? internal state?
-
-{ config, lib, ... }:
-
-{
-  # https://jellyfin.org/docs/general/networking/index.html
-  sane.ports.ports."1900" = {
-    protocol = [ "udp" ];
-    visibleTo.lan = true;
-    description = "colin-upnp-for-jellyfin";
-  };
-  sane.ports.ports."7359" = {
-    protocol = [ "udp" ];
-    visibleTo.lan = true;
-    description = "colin-jellyfin-specific-client-discovery";
-    # ^ not sure if this is necessary: copied this port from nixos jellyfin.openFirewall
-  };
-  # not sure if 8096/8920 get used either:
-  sane.ports.ports."8096" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    description = "colin-jellyfin-http-lan";
-  };
-  sane.ports.ports."8920" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    description = "colin-jellyfin-https-lan";
-  };
-
-  sane.persist.sys.byStore.plaintext = [
-    { user = "jellyfin"; group = "jellyfin"; mode = "0700"; path = "/var/lib/jellyfin"; method = "bind"; }
-  ];
-  sane.fs."/var/lib/jellyfin/config/logging.json" = {
-    # "Emby.Dlna" logging: <https://jellyfin.org/docs/general/networking/dlna>
-    symlink.text = ''
-      {
-        "Serilog": {
-          "MinimumLevel": {
-            "Default": "Information",
-            "Override": {
-              "Microsoft": "Warning",
-              "System": "Warning",
-              "Emby.Dlna": "Debug",
-              "Emby.Dlna.Eventing": "Debug"
-            }
-          },
-          "WriteTo": [
-            {
-              "Name": "Console",
-              "Args": {
-                "outputTemplate": "[{Timestamp:HH:mm:ss}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message:lj}{NewLine}{Exception}"
-              }
-            }
-          ],
-          "Enrich": [ "FromLogContext", "WithThreadId" ]
-        }
-      }
-    '';
-    wantedBeforeBy = [ "jellyfin.service" ];
-  };
-
-  # Jellyfin multimedia server
-  # this is mostly taken from the official jellfin.org docs
-  services.nginx.virtualHosts."jelly.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:8096";
-      extraConfig = ''
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_set_header X-Forwarded-Protocol $scheme;
-        proxy_set_header X-Forwarded-Host $http_host;
-
-        # Disable buffering when the nginx proxy gets very resource heavy upon streaming
-        proxy_buffering off;
-      '';
-    };
-    # locations."/web/" = {
-    #   proxyPass = "http://127.0.0.1:8096/web/index.html";
-    #   extraConfig = ''
-    #     proxy_set_header Host $host;
-    #     proxy_set_header X-Real-IP $remote_addr;
-    #     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    #     proxy_set_header X-Forwarded-Proto $scheme;
-    #     proxy_set_header X-Forwarded-Protocol $scheme;
-    #     proxy_set_header X-Forwarded-Host $http_host;
-    #   '';
-    # };
-    locations."/socket" = {
-      proxyPass = "http://127.0.0.1:8096";
-      extraConfig = ''
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "upgrade";
-
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_set_header X-Forwarded-Protocol $scheme;
-        proxy_set_header X-Forwarded-Host $http_host;
-      '';
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."jelly" = "native";
-
-  services.jellyfin.enable = true;
-}

hosts/by-name/servo/services/kiwix-serve.nix

@@ -1,27 +0,0 @@
-# how to update wikipedia snapshot:
-# - browse for later snapshots:
-#   - <https://mirror.accum.se/mirror/wikimedia.org/other/kiwix/zim/wikipedia>
-# - DL directly, or via rsync (resumable):
-#   - `rsync --progress --append-verify rsync://mirror.accum.se/mirror/wikimedia.org/other/kiwix/zim/wikipedia/wikipedia_en_all_maxi_2022-05.zim .`
-
-{ ... }:
-{
-  sane.persist.sys.byStore.ext = [
-    { user = "colin"; group = "users"; path = "/var/lib/kiwix"; method = "bind"; }
-  ];
-
-  sane.services.kiwix-serve = {
-    enable = true;
-    port = 8013;
-    zimPaths = [ "/var/lib/kiwix/wikipedia_en_all_maxi_2023-11.zim" ];
-  };
-
-  services.nginx.virtualHosts."w.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    locations."/".proxyPass = "http://127.0.0.1:8013";
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."w" = "native";
-}

hosts/by-name/servo/services/komga.nix

@@ -1,22 +0,0 @@
-{ config, ... }:
-let
-  svc-cfg = config.services.komga;
-  inherit (svc-cfg) user group port stateDir;
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    { inherit user group; mode = "0700"; path = stateDir; method = "bind"; }
-  ];
-
-  services.komga.enable = true;
-  services.komga.port = 11319;  # chosen at random
-
-  services.nginx.virtualHosts."komga.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:${builtins.toString port}";
-    };
-  };
-  sane.dns.zones."uninsane.org".inet.CNAME."komga" = "native";
-}

hosts/by-name/servo/services/lemmy.nix

@@ -1,85 +0,0 @@
-# docs:
-# - <repo:LemmyNet/lemmy:docker/federation/nginx.conf>
-# - <repo:LemmyNet/lemmy:docker/nginx.conf>
-# - <repo:LemmyNet/lemmy-ansible:templates/nginx.conf>
-
-{ config, lib, pkgs, ... }:
-let
-  inherit (builtins) toString;
-  inherit (lib) mkForce;
-  uiPort = 1234;  # default ui port is 1234
-  backendPort = 8536; # default backend port is 8536
-  #^ i guess the "backend" port is used for federation?
-  pict-rs = pkgs.pict-rs.overrideAttrs (upstream: {
-    # as of v 0.4.2, all non-GIF video is forcibly transcoded.
-    # that breaks lemmy, because of the request latency.
-    # and it eats up hella CPU.
-    # pict-rs is iffy around video altogether: mp4 seems the best supported.
-    postPatch = (upstream.postPatch or "") + ''
-      substituteInPlace src/validate.rs \
-        --replace 'if transcode_options.needs_reencode() {' 'if false {'
-    '';
-  });
-in {
-  services.lemmy = {
-    enable = true;
-    settings.hostname = "lemmy.uninsane.org";
-    # federation.debug forces outbound federation queries to be run synchronously
-    # N.B.: this option might not be read for 0.17.0+? <https://github.com/LemmyNet/lemmy/blob/c32585b03429f0f76d1e4ff738786321a0a9df98/RELEASES.md#upgrade-instructions>
-    # settings.federation.debug = true;
-    settings.port = backendPort;
-    ui.port = uiPort;
-    database.createLocally = true;
-    nginx.enable = true;
-  };
-
-  systemd.services.lemmy.serviceConfig = {
-    # fix to use a normal user so we can configure perms correctly
-    DynamicUser = mkForce false;
-    User = "lemmy";
-    Group = "lemmy";
-  };
-  systemd.services.lemmy.environment = {
-    RUST_BACKTRACE = "full";
-    # RUST_LOG = "debug";
-    # RUST_LOG = "trace";
-    # upstream defaults LEMMY_DATABASE_URL = "postgres:///lemmy?host=/run/postgresql";
-    # - Postgres complains that we didn't specify a user
-    # lemmy formats the url as:
-    # - postgres://{user}:{password}@{host}:{port}/{database}
-    # SO suggests (https://stackoverflow.com/questions/3582552/what-is-the-format-for-the-postgresql-connection-string-url):
-    # - postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&...]
-    # LEMMY_DATABASE_URL = "postgres://lemmy@/run/postgresql";  # connection to server on socket "/run/postgresql/.s.PGSQL.5432" failed: FATAL:  database "run/postgresql" does not exist
-    # LEMMY_DATABASE_URL = "postgres://lemmy?host=/run/postgresql";  # no PostgreSQL user name specified in startup packet
-    # LEMMY_DATABASE_URL = mkForce "postgres://lemmy@?host=/run/postgresql";  # WORKS
-    LEMMY_DATABASE_URL = mkForce "postgres://lemmy@/lemmy?host=/run/postgresql";
-  };
-  users.groups.lemmy = {};
-  users.users.lemmy = {
-    group = "lemmy";
-    isSystemUser = true;
-  };
-
-  services.nginx.virtualHosts."lemmy.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."lemmy" = "native";
-
-  #v DO NOT REMOVE: defaults to 0.3, instead of latest, so always need to explicitly set this.
-  services.pict-rs.package = pict-rs;
-
-  # pict-rs configuration is applied in this order:
-  # - via toml
-  # - via env vars (overrides everything above)
-  # - via CLI flags (overrides everything above)
-  # some of the CLI flags have defaults, making it the only actual way to configure certain things even when docs claim otherwise.
-  # CLI args: <https://git.asonix.dog/asonix/pict-rs#user-content-running>
-  systemd.services.pict-rs.serviceConfig.ExecStart = lib.mkForce (lib.concatStringsSep " " [
-    "${lib.getBin pict-rs}/bin/pict-rs run"
-    "--media-video-max-frame-count" (builtins.toString (30*60*60))
-    "--media-process-timeout 120"
-    "--media-video-allow-audio"  # allow audio
-  ]);
-}

hosts/by-name/servo/services/matrix/default.nix

@@ -1,165 +0,0 @@
-# docs: <https://nixos.wiki/wiki/Matrix>
-# docs: <https://nixos.org/manual/nixos/stable/index.html#module-services-matrix-synapse>
-# example config: <https://github.com/matrix-org/synapse/blob/develop/docs/sample_config.yaml>
-#
-# ENABLING PUSH NOTIFICATIONS (with UnifiedPush/ntfy):
-# - Matrix "pushers" API spec: <https://spec.matrix.org/latest/client-server-api/#post_matrixclientv3pushersset>
-# - first, view notification settings:
-#   - obtain your client's auth token. e.g. Element -> profile -> help/about -> access token.
-#   - `curl --header 'Authorization: Bearer <your_access_token>' localhost:8008/_matrix/client/v3/pushers | jq .`
-# - enable a new notification destination:
-#   - `curl --header "Authorization: Bearer <your_access_token>" --data '{ "app_display_name": "<topic>", "app_id": "ntfy.uninsane.org", "data": { "url": "https://ntfy.uninsane.org/_matrix/push/v1/notify", "format": "event_id_only" }, "device_display_name": "<topic>", "kind": "http", "lang": "en-US", "profile_tag": "", "pushkey": "<topic>" }' localhost:8008/_matrix/client/v3/pushers/set`
-# - delete a notification destination by setting `kind` to `null` (otherwise, request is identical to above)
-#
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./discord-puppet.nix
-    ./irc.nix
-    ./signal.nix
-  ];
-
-  sane.persist.sys.byStore.plaintext = [
-    { user = "matrix-synapse"; group = "matrix-synapse"; path = "/var/lib/matrix-synapse"; method = "bind"; }
-  ];
-  services.matrix-synapse.enable = true;
-  services.matrix-synapse.settings = {
-    # this changes the default log level from INFO to WARN.
-    # maybe there's an easier way?
-    log_config = ./synapse-log_level.yaml;
-    server_name = "uninsane.org";
-
-    # services.matrix-synapse.enable_registration_captcha = true;
-    # services.matrix-synapse.enable_registration_without_verification = true;
-    enable_registration = true;
-    # services.matrix-synapse.registration_shared_secret = "<shared key goes here>";
-
-    # default for listeners is port = 8448, tls = true, x_forwarded = false.
-    # we change this because the server is situated behind nginx.
-    listeners = [
-      {
-        port = 8008;
-        bind_addresses = [ "127.0.0.1" ];
-        type = "http";
-        tls = false;
-        x_forwarded = true;
-        resources = [
-          {
-            names = [ "client" "federation" ];
-            compress = false;
-          }
-        ];
-      }
-    ];
-
-    ip_range_whitelist = [
-      # to communicate with ntfy.uninsane.org push notifs.
-      # TODO: move this to some non-shared loopback device: we don't want Matrix spouting http requests to *anything* on this machine
-      "10.78.79.51"
-    ];
-
-    x_forwarded = true;  # because we proxy matrix behind nginx
-    max_upload_size = "100M";  # default is "50M"
-
-    admin_contact = "admin.matrix@uninsane.org";
-    registrations_require_3pid = [ "email" ];
-  };
-
-  services.matrix-synapse.extraConfigFiles = [
-    config.sops.secrets."matrix_synapse_secrets.yaml".path
-  ];
-
-  systemd.services.matrix-synapse.postStart = ''
-    ACCESS_TOKEN=$(${pkgs.coreutils}/bin/cat ${config.sops.secrets.matrix_access_token.path})
-    TOPIC=$(${pkgs.coreutils}/bin/cat ${config.sops.secrets.ntfy-sh-topic.path})
-
-    echo "ensuring ntfy push gateway"
-    ${pkgs.curl}/bin/curl \
-      --header "Authorization: Bearer $ACCESS_TOKEN" \
-      --data "{ \"app_display_name\": \"ntfy-adapter\", \"app_id\": \"ntfy.uninsane.org\", \"data\": { \"url\": \"https://ntfy.uninsane.org/_matrix/push/v1/notify\", \"format\": \"event_id_only\" }, \"device_display_name\": \"ntfy-adapter\", \"kind\": \"http\", \"lang\": \"en-US\", \"profile_tag\": \"\", \"pushkey\": \"$TOPIC\" }" \
-      localhost:8008/_matrix/client/v3/pushers/set
-
-    echo "registered push gateways:"
-    ${pkgs.curl}/bin/curl \
-      --header "Authorization: Bearer $ACCESS_TOKEN" \
-      localhost:8008/_matrix/client/v3/pushers \
-      | ${pkgs.jq}/bin/jq .
-  '';
-
-
-  # new users may be registered on the CLI:
-  #   register_new_matrix_user -c /nix/store/8n6kcka37jhmi4qpd2r03aj71pkyh21s-homeserver.yaml http://localhost:8008
-  #
-  # or provide an registration token then can use to register through the client.
-  #   docs: https://github.com/matrix-org/synapse/blob/develop/docs/usage/administration/admin_api/registration_tokens.md
-  # first, grab your own user's access token (Help & About section in Element). then:
-  #   curl --header "Authorization: Bearer <my_token>" localhost:8008/_synapse/admin/v1/registration_tokens
-  # create a token with unlimited uses:
-  #   curl -d '{}' --header "Authorization: Bearer <my_token>" localhost:8008/_synapse/admin/v1/registration_tokens/new
-  # create a token with limited uses:
-  #   curl -d '{ "uses_allowed": 1 }' --header "Authorization: Bearer <my_token>" localhost:8008/_synapse/admin/v1/registration_tokens/new
-
-  # matrix chat server
-  # TODO: was `publog`
-  services.nginx.virtualHosts."matrix.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-
-    # TODO colin: replace this with something helpful to the viewer
-    # locations."/".extraConfig = ''
-    #   return 404;
-    # '';
-
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:8008";
-      extraConfig = ''
-        # allow uploading large files (matrix enforces a separate limit, downstream)
-        client_max_body_size  512m;
-      '';
-    };
-    # redirect browsers to the web client.
-    # i don't think native matrix clients ever fetch the root.
-    # ideally this would be put behind some user-agent test though.
-    locations."= /" = {
-      return = "301 https://web.matrix.uninsane.org";
-    };
-
-    # locations."/_matrix" = {
-    #   proxyPass = "http://127.0.0.1:8008";
-    # };
-  };
-
-  # matrix web client
-  # docs: https://nixos.org/manual/nixos/stable/index.html#module-services-matrix-element-web
-  services.nginx.virtualHosts."web.matrix.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-
-    root = pkgs.element-web.override {
-      conf = {
-        default_server_config."m.homeserver" = {
-          "base_url" = "https://matrix.uninsane.org";
-          "server_name" = "uninsane.org";
-        };
-      };
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet = {
-    CNAME."matrix" = "native";
-    CNAME."web.matrix" = "native";
-  };
-
-
-  sops.secrets."matrix_synapse_secrets.yaml" = {
-    owner = config.users.users.matrix-synapse.name;
-  };
-  sops.secrets."matrix_access_token" = {
-    owner = config.users.users.matrix-synapse.name;
-  };
-  # provide access to ntfy-sh-topic secret
-  users.users.matrix-synapse.extraGroups = [ "ntfy-sh" ];
-}

hosts/by-name/servo/services/matrix/discord-puppet.nix

@@ -1,58 +0,0 @@
-{ lib, ... }:
-
-# XXX mx-discord-puppet uses nodejs_14 which is EOL
-# - mx-discord-puppet is abandoned upstream _and_ in nixpkgs
-# - recommended to use mautrix-discord: <https://github.com/NixOS/nixpkgs/pull/200462>
-lib.mkIf false
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "matrix-synapse"; group = "matrix-synapse"; path = "/var/lib/mx-puppet-discord"; method = "bind"; }
-  ];
-
-  services.matrix-synapse.settings.app_service_config_files = [
-    # auto-created by mx-puppet-discord service
-    "/var/lib/mx-puppet-discord/discord-registration.yaml"
-  ];
-
-  services.mx-puppet-discord.enable = true;
-  # schema/example: <https://gitlab.com/mx-puppet/discord/mx-puppet-discord/-/blob/main/sample.config.yaml>
-  services.mx-puppet-discord.settings = {
-    bridge = {
-      # port = 8434
-      bindAddress = "127.0.0.1";
-      domain = "uninsane.org";
-      homeserverUrl = "http://127.0.0.1:8008";
-      # displayName = "mx-discord-puppet";  # matrix name for the bot
-      # matrix "groups" were an earlier version of spaces.
-      # maybe the puppet understands this, maybe not?
-      enableGroupSync = false;
-    };
-    presence = {
-      enabled = false;
-      interval = 30000;
-    };
-    provisioning = {
-      # allow these users to control the puppet
-      whitelist = [ "@colin:uninsane\\.org" ];
-    };
-    relay = {
-      whitelist = [ "@colin:uninsane\\.org" ];
-    };
-    selfService = {
-      # who's allowed to use plumbed rooms (idk what that means)
-      whitelist = [ "@colin:uninsane\\.org" ];
-    };
-    logging = {
-      # silly, debug, verbose, info, warn, error
-      console = "debug";
-    };
-  };
-
-  # TODO: should use a dedicated user
-  systemd.services.mx-puppet-discord.serviceConfig = {
-    # fix up to not use /var/lib/private, but just /var/lib
-    DynamicUser = lib.mkForce false;
-    User = "matrix-synapse";
-    Group = "matrix-synapse";
-  };
-}

hosts/by-name/servo/services/matrix/irc-no-reveal-bridge.patch

@@ -1,13 +0,0 @@
-diff --git a/src/irc/ConnectionInstance.ts b/src/irc/ConnectionInstance.ts
-index 688036ca..3373fa27 100644
---- a/src/irc/ConnectionInstance.ts
-+++ b/src/irc/ConnectionInstance.ts
-@@ -149,7 +149,7 @@ export class ConnectionInstance {
-         if (this.dead) {
-             return Promise.resolve();
-         }
--        ircReason = ircReason || reason;
-+        ircReason = "bye"; // don't reveal through the IRC quit message that we're a bridge
-         log.info(
-             "disconnect()ing %s@%s - %s", this.nick, this.domain, reason
-         );

hosts/by-name/servo/services/matrix/irc-no-reveal-mxid.patch

@@ -1,50 +0,0 @@
-diff --git a/config.schema.yml b/config.schema.yml
-index 2e71c8d6..42ba8ba1 100644
---- a/config.schema.yml
-+++ b/config.schema.yml
-@@ -433,7 +433,7 @@ properties:
-                                     type: "boolean"
-                                 realnameFormat:
-                                     type: "string"
--                                    enum: ["mxid","reverse-mxid"]
-+                                    enum: ["mxid","reverse-mxid","localpart"]
-                                 ipv6:
-                                     type: "object"
-                                     properties:
-diff --git a/src/irc/IdentGenerator.ts b/src/irc/IdentGenerator.ts
-index 7a2b5cf1..50f7815a 100644
---- a/src/irc/IdentGenerator.ts
-+++ b/src/irc/IdentGenerator.ts
-@@ -74,6 +74,9 @@ export class IdentGenerator {
-         else if (server.getRealNameFormat() === "reverse-mxid") {
-             realname = IdentGenerator.sanitiseRealname(IdentGenerator.switchAroundMxid(matrixUser));
-         }
-+        else if (server.getRealNameFormat() == "localpart") {
-+            realname = IdentGenerator.sanitiseRealname(matrixUser.localpart);
-+        }
-         else {
-             throw Error('Invalid value for realNameFormat');
-         }
-diff --git a/src/irc/IrcServer.ts b/src/irc/IrcServer.ts
-index 2af73ab4..895b9783 100644
---- a/src/irc/IrcServer.ts
-+++ b/src/irc/IrcServer.ts
-@@ -101,7 +101,7 @@ export interface IrcServerConfig {
-         };
-         lineLimit: number;
-         userModes?: string;
--        realnameFormat?: "mxid"|"reverse-mxid";
-+        realnameFormat?: "mxid"|"reverse-mxid"|"localpart";
-         pingTimeoutMs: number;
-         pingRateMs: number;
-         kickOn: {
-@@ -289,7 +289,7 @@ export class IrcServer {
-         return this.config.ircClients.userModes || "";
-     }
- 
--    public getRealNameFormat(): "mxid"|"reverse-mxid" {
-+    public getRealNameFormat(): "mxid"|"reverse-mxid"|"localpart" {
-         return this.config.ircClients.realnameFormat || "mxid";
-     }
- 
-

hosts/by-name/servo/services/matrix/irc.nix

@@ -1,168 +0,0 @@
-# config docs:
-# - <https://github.com/matrix-org/matrix-appservice-irc/blob/develop/config.sample.yaml>
-#       probably want to remove that.
-{ config, lib, ... }:
-
-let
-  ircServer = { name, additionalAddresses ? [], sasl ? true, port ? 6697 }: let
-    lowerName = lib.toLower name;
-  in {
-    # XXX sasl: appservice doesn't support NickServ identification (only SASL, or PASS if sasl = false)
-    inherit name additionalAddresses sasl port;
-    ssl = true;
-    botConfig = {
-      # bot has no presence in IRC channel; only real Matrix users
-      enabled = false;
-      # this is the IRC username/nickname *of the bot* (not visible in channels): not of the end-user.
-      # the irc username/nick of a mapped Matrix user is determined further down in `ircClients` section.
-      # if `enabled` is false, then this name probably never shows up on the IRC side (?)
-      nick = "uninsane";
-      username = "uninsane";
-      joinChannelsIfNoUsers = false;
-    };
-    dynamicChannels = {
-      enabled = true;
-      aliasTemplate = "#irc_${lowerName}_$CHANNEL";
-      published = false;  # false => irc rooms aren't listed in homeserver public rooms list
-      federate = false;  # false => Matrix users from other homeservers can't join IRC channels
-    };
-    ircClients = {
-      nickTemplate = "$LOCALPARTsane";  # @colin:uninsane.org (Matrix) -> colinsane (IRC)
-      realnameFormat = "reverse-mxid";  # @colin:uninsane.org (Matrix) -> org.uninsane:colin (IRC)
-      # realnameFormat = "localpart";  # @colin:uninsane.org (Matrix) -> colin (IRC)  -- but requires the mxid patch below
-      # by default, Matrix will convert messages greater than (3) lines into a pastebin-like URL to send to IRC.
-      lineLimit = 20;
-      # Rizon in particular allows only 4 connections from one IP before a 30min ban.
-      # that's effectively reduced to 2 during a netsplit, or maybe during a restart.
-      #   - https://wiki.rizon.net/index.php?title=Connection/Session_Limit_Exemptions
-      # especially, misconfigurations elsewhere in this config may cause hundreds of connections
-      # so this is a safeguard.
-      maxClients = 2;
-      # don't have the bridge disconnect me from IRC when idle.
-      idleTimeout = 0;
-      concurrentReconnectLimit = 2;
-      reconnectIntervalMs = 60000;
-      kickOn = {
-        # remove Matrix user from room when...
-        channelJoinFailure = false;
-        ircConnectionFailure = false;
-        userQuit = true;
-      };
-    };
-    matrixClients = {
-      userTemplate = "@irc_${lowerName}_$NICK";  # the :uninsane.org part is appended automatically
-    };
-
-    # this will let this user message the appservice with `!join #<IRCChannel>` and the rest "Just Works"
-    "@colin:uninsane.org" = "admin";
-
-    membershipLists = {
-      enabled = true;
-      global = {
-        ircToMatrix = {
-          initial = true;
-          incremental = true;
-          requireMatrixJoined = false;
-        };
-        matrixToIrc = {
-          initial = true;
-          incremental = true;
-        };
-      };
-      ignoreIdleUsersOnStartup = {
-        enabled = false;  # false => always bridge users, even if idle
-      };
-    };
-    # sync room description?
-    bridgeInfoState = {
-      enabled = true;
-      initial = true;
-    };
-
-    # for per-user IRC password:
-    # - invite @irc_${lowerName}_NickServ:uninsane.org to a DM and type `help`  => register
-    # - invite the matrix-appservice-irc user to a DM and type `!help`   => add PW to database
-    # to validate that i'm authenticated on the IRC network, DM @irc_${lowerName}_NickServ:uninsane.org:
-    # - send: `STATUS colinsane`
-    # - response should be `3`: "user recognized as owner via password identification"
-    # passwordEncryptionKeyPath = "/path/to/privkey";  # appservice will generate its own if unspecified
-  };
-in
-{
-
-  nixpkgs.overlays = [
-    (next: prev: {
-      matrix-appservice-irc = prev.matrix-appservice-irc.overrideAttrs (super: {
-        patches = super.patches or [] ++ [
-          ./irc-no-reveal-bridge.patch
-          # ./irc-no-reveal-mxid.patch
-        ];
-      });
-    })
-  ];
-
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode?
-    { user = "matrix-appservice-irc"; group = "matrix-appservice-irc"; path = "/var/lib/matrix-appservice-irc"; method = "bind"; }
-  ];
-
-  # XXX: matrix-appservice-irc PreStart tries to chgrp the registration.yml to matrix-synapse,
-  # which requires matrix-appservice-irc to be of that group
-  users.users.matrix-appservice-irc.extraGroups = [ "matrix-synapse" ];
-  # weird race conditions around registration.yml mean we want matrix-synapse to be of matrix-appservice-irc group too.
-  users.users.matrix-synapse.extraGroups = [ "matrix-appservice-irc" ];
-
-  services.matrix-synapse.settings.app_service_config_files = [
-    "/var/lib/matrix-appservice-irc/registration.yml"  # auto-created by irc appservice
-  ];
-
-  services.matrix-appservice-irc.enable = true;
-  services.matrix-appservice-irc.registrationUrl = "http://127.0.0.1:8009";
-  services.matrix-appservice-irc.settings = {
-    homeserver = {
-      url = "http://127.0.0.1:8008";
-      dropMatrixMessagesAfterSecs = 300;
-      domain = "uninsane.org";
-      enablePresence = true;
-      bindPort = 9999;
-      bindHost = "127.0.0.1";
-    };
-
-    ircService = {
-      servers = {
-        "irc.esper.net" = ircServer {
-          name = "esper";
-          sasl = false;
-          # notable channels:
-          # - #merveilles
-        };
-        "irc.libera.chat" = ircServer {
-          name = "libera";
-          sasl = false;
-          # notable channels:
-          # - #hare
-          # - #mnt-reform
-        };
-        "irc.myanonamouse.net" = ircServer {
-          name = "MyAnonamouse";
-          additionalAddresses = [ "irc2.myanonamouse.net" ];
-          sasl = false;
-        };
-        "irc.oftc.net" = ircServer {
-          name = "oftc";
-          sasl = false;
-          # notable channels:
-          # - #sxmo
-          # - #sxmo-offtopic
-        };
-        "irc.rizon.net" = ircServer { name = "Rizon"; };
-      };
-    };
-  };
-
-  systemd.services.matrix-appservice-irc.serviceConfig = {
-    # XXX 2023/06/20: nixos specifies this + @aio and @memlock as forbidden
-    # the service actively uses at least one of these, and both of them are fairly innocuous
-    SystemCallFilter = lib.mkForce "~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @setuid @swap";
-  };
-}

hosts/by-name/servo/services/matrix/signal.nix

@@ -1,39 +0,0 @@
-# config options:
-# - <https://github.com/mautrix/signal/blob/master/mautrix_signal/example-config.yaml>
-{ config, lib, pkgs, ... }:
-
-lib.mkIf false  # disabled 2024/01/11: i don't use it, and pkgs.mautrix-signal had some API changes
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "mautrix-signal"; group = "mautrix-signal"; path = "/var/lib/mautrix-signal"; method = "bind"; }
-    { user = "signald"; group = "signald"; path = "/var/lib/signald"; method = "bind"; }
-  ];
-
-  # allow synapse to read the registration file
-  users.users.matrix-synapse.extraGroups = [ "mautrix-signal" ];
-
-  services.signald.enable = true;
-  services.mautrix-signal.enable = true;
-  services.mautrix-signal.environmentFile =
-    config.sops.secrets.mautrix_signal_env.path;
-
-  services.mautrix-signal.settings.signal.socket_path = "/run/signald/signald.sock";
-  services.mautrix-signal.settings.homeserver.domain = "uninsane.org";
-  services.mautrix-signal.settings.bridge.permissions."@colin:uninsane.org" = "admin";
-  services.matrix-synapse.settings.app_service_config_files = [
-    # auto-created by mautrix-signal service
-    "/var/lib/mautrix-signal/signal-registration.yaml"
-  ];
-
-  systemd.services.mautrix-signal.serviceConfig = {
-    # allow communication to signald
-    SupplementaryGroups = [ "signald" ];
-    ReadWritePaths = [ "/run/signald" ];
-  };
-
-  sops.secrets."mautrix_signal_env" = {
-    mode = "0440";
-    owner = config.users.users.mautrix-signal.name;
-    group = config.users.users.matrix-synapse.name;
-  };
-}

hosts/by-name/servo/services/matrix/synapse-log_level.yaml

@@ -1,27 +0,0 @@
-version: 1
-
-# In systemd's journal, loglevel is implicitly stored, so let's omit it
-# from the message text.
-formatters:
-    journal_fmt:
-        format: '%(name)s: [%(request)s] %(message)s'
-
-filters:
-    context:
-        (): synapse.util.logcontext.LoggingContextFilter
-        request: ""
-
-handlers:
-    journal:
-        class: systemd.journal.JournalHandler
-        formatter: journal_fmt
-        filters: [context]
-        SYSLOG_IDENTIFIER: synapse
-
-# default log level: INFO
-root:
-    level: WARN
-    handlers: [journal]
-
-disable_existing_loggers: False
-

hosts/by-name/servo/services/navidrome.nix

@@ -1,41 +0,0 @@
-{ lib, ... }:
-
-lib.mkIf false  #< i don't actively use navidrome
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "navidrome"; group = "navidrome"; path = "/var/lib/navidrome"; method = "bind"; }
-  ];
-  services.navidrome.enable = true;
-  services.navidrome.settings = {
-    # docs: https://www.navidrome.org/docs/usage/configuration-options/
-    Address = "127.0.0.1";
-    Port = 4533;
-    MusicFolder = "/var/media/Music";
-    CovertArtPriority = "*.jpg, *.JPG, *.png, *.PNG, embedded";
-    AutoImportPlaylists = false;
-    ScanSchedule = "@every 1h";
-  };
-
-  systemd.services.navidrome.serviceConfig = {
-    # fix to use a normal user so we can configure perms correctly
-    DynamicUser = lib.mkForce false;
-    User = "navidrome";
-    Group = "navidrome";
-  };
-
-  users.groups.navidrome = {};
-
-  users.users.navidrome = {
-    group = "navidrome";
-    isSystemUser = true;
-  };
-
-  services.nginx.virtualHosts."music.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    locations."/".proxyPass = "http://127.0.0.1:4533";
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."music" = "native";
-}

hosts/by-name/servo/services/nginx.nix

@@ -1,213 +0,0 @@
-# docs: <https://nixos.wiki/wiki/Nginx>
-# docs: <https://nginx.org/en/docs/>
-{ config, lib, pkgs, ... }:
-
-let
-  # make the logs for this host "public" so that they show up in e.g. metrics
-  publog = vhost: lib.attrsets.unionOfDisjoint vhost {
-    extraConfig = (vhost.extraConfig or "") + ''
-      access_log /var/log/nginx/public.log vcombined;
-    '';
-  };
-
-  # kTLS = true;  # in-kernel TLS for better perf
-in
-{
-
-  sane.ports.ports."80" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    visibleTo.ovpn = true;  # so that letsencrypt can procure a cert for the mx record
-    description = "colin-http-uninsane.org";
-  };
-  sane.ports.ports."443" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-https-uninsane.org";
-  };
-
-  services.nginx.enable = true;
-  services.nginx.appendConfig = ''
-    # use 1 process per core.
-    # may want to increase worker_connections too, but `ulimit -n` must be increased first.
-    worker_processes auto;
-  '';
-
-  # this is the standard `combined` log format, with the addition of $host
-  # so that we have the virtualHost in the log.
-  # KEEP IN SYNC WITH GOACCESS
-  # goaccess calls this VCOMBINED:
-  # - <https://gist.github.com/jyap808/10570005>
-  services.nginx.commonHttpConfig = ''
-    log_format vcombined '$host:$server_port $remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referrer" "$http_user_agent"';
-    access_log /var/log/nginx/private.log vcombined;
-  '';
-  # sets gzip_comp_level = 5
-  services.nginx.recommendedGzipSettings = true;
-  # enables OCSP stapling (so clients don't need contact the OCSP server -- i do instead)
-  # - doesn't seem to, actually: <https://www.ssllabs.com/ssltest/analyze.html?d=uninsane.org>
-  # caches TLS sessions for 10m
-  services.nginx.recommendedTlsSettings = true;
-  # enables sendfile, tcp_nopush, tcp_nodelay, keepalive_timeout 65
-  services.nginx.recommendedOptimisation = true;
-
-  # web blog/personal site
-  # alternative way to link stuff into the share:
-  # sane.fs."/var/www/sites/uninsane.org/share/Ubunchu".mount.bind = "/var/media/Books/Visual/HiroshiSeo/Ubunchu";
-  # sane.fs."/var/media/Books/Visual/HiroshiSeo/Ubunchu".dir = {};
-  services.nginx.virtualHosts."uninsane.org" = publog {
-    # a lot of places hardcode https://uninsane.org,
-    # and then when we mix http + non-https, we get CORS violations
-    # and things don't look right. so force SSL.
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    # for OCSP stapling
-    sslTrustedCertificate = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
-
-    locations."/" = {
-      root = "${pkgs.uninsane-dot-org}/share/uninsane-dot-org";
-      tryFiles = "$uri $uri/ @fallback";
-    };
-
-    # unversioned files
-    locations."@fallback" = {
-      root = "/var/www/sites/uninsane.org";
-    };
-
-    # uninsane.org/share/foo => /var/www/sites/uninsane.org/share/foo.
-    # special-cased to enable directory listings
-    locations."/share" = {
-      root = "/var/www/sites/uninsane.org";
-      extraConfig = ''
-        # autoindex => render directory listings
-        autoindex on;
-        # don't follow any symlinks when serving files
-        # otherwise it allows a directory escape
-        disable_symlinks on;
-      '';
-    };
-
-    # allow matrix users to discover that @user:uninsane.org is reachable via matrix.uninsane.org
-    locations."= /.well-known/matrix/server".extraConfig =
-      let
-        # use 443 instead of the default 8448 port to unite
-        # the client-server and server-server port for simplicity
-        server = { "m.server" = "matrix.uninsane.org:443"; };
-      in ''
-        add_header Content-Type application/json;
-        return 200 '${builtins.toJSON server}';
-      '';
-    locations."= /.well-known/matrix/client".extraConfig =
-      let
-        client = {
-          "m.homeserver" =  { "base_url" = "https://matrix.uninsane.org"; };
-          "m.identity_server" =  { "base_url" = "https://vector.im"; };
-        };
-      # ACAO required to allow element-web on any URL to request this json file
-      in ''
-        add_header Content-Type application/json;
-        add_header Access-Control-Allow-Origin *;
-        return 200 '${builtins.toJSON client}';
-      '';
-
-    # static URLs might not be aware of .well-known (e.g. registration confirmation URLs),
-    # so hack around that.
-    locations."/_matrix" = {
-      proxyPass = "http://127.0.0.1:8008";
-    };
-    locations."/_synapse" = {
-      proxyPass = "http://127.0.0.1:8008";
-    };
-
-    # allow ActivityPub clients to discover how to reach @user@uninsane.org
-    # see: https://git.pleroma.social/pleroma/pleroma/-/merge_requests/3361/
-    # not sure this makes sense while i run multiple AP services (pleroma, lemmy)
-    # locations."/.well-known/nodeinfo" = {
-    #   proxyPass = "http://127.0.0.1:4000";
-    #   extraConfig = pleromaExtraConfig;
-    # };
-
-    # redirect common feed URIs to the canonical feed
-    locations."= /atom".extraConfig = "return 301 /atom.xml;";
-    locations."= /feed".extraConfig = "return 301 /atom.xml;";
-    locations."= /feed.xml".extraConfig = "return 301 /atom.xml;";
-    locations."= /rss".extraConfig = "return 301 /atom.xml;";
-    locations."= /rss.xml".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/atom".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/atom.xml".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/feed".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/feed.xml".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/rss".extraConfig = "return 301 /atom.xml;";
-    locations."= /blog/rss.xml".extraConfig = "return 301 /atom.xml;";
-  };
-
-
-  # serve any site not listed above, if it's static.
-  # because we define it dynamically, SSL isn't trivial. support only http
-  # documented <https://nginx.org/en/docs/http/ngx_http_core_module.html#server_name>
-  services.nginx.virtualHosts."~^(?<domain>.+)$" = {
-    default = true;
-    addSSL = true;
-    enableACME = false;
-    sslCertificate = "/var/www/certs/wildcard/cert.pem";
-    sslCertificateKey = "/var/www/certs/wildcard/key.pem";
-    # sslCertificate = "/var/lib/acme/.minica/cert.pem";
-    # sslCertificateKey = "/var/lib/acme/.minica/key.pem";
-    # serverName = null;
-    locations."/" = {
-      # somehow this doesn't escape -- i get error 400 if i:
-      # curl 'http://..' --resolve '..:80:127.0.0.1'
-      root = "/var/www/sites/$domain";
-      # tryFiles = "$domain/$uri $domain/$uri/ =404";
-    };
-  };
-
-  security.acme.acceptTerms = true;
-  security.acme.defaults.email = "admin.acme@uninsane.org";
-
-  sane.persist.sys.byStore.plaintext = [
-    { user = "acme"; group = "acme"; path = "/var/lib/acme"; method = "bind"; }
-    { user = "colin"; group = "users"; path = "/var/www/sites"; method = "bind"; }
-  ];
-
-  # let's encrypt default chain looks like:
-  # - End-entity certificate ← R3 ← ISRG Root X1 ← DST Root CA X3
-  # - <https://community.letsencrypt.org/t/production-chain-changes/150739>
-  # DST Root CA X3 expired in 2021 (?)
-  # the alternative chain is:
-  # - End-entity certificate ← R3 ← ISRG Root X1 (self-signed)
-  # using this alternative chain grants more compatibility for services like ejabberd
-  # but might decrease compatibility with very old clients that don't get updates (e.g. old android, iphone <= 4).
-  # security.acme.defaults.extraLegoFlags = [
-  security.acme.certs."uninsane.org" = rec {
-    # ISRG Root X1 results in lets encrypt sending the same chain as default,
-    # just without the final ISRG Root X1 ← DST Root CA X3 link.
-    # i.e. we could alternative clip the last item and achieve the exact same thing.
-    extraLegoRunFlags = [
-      "--preferred-chain" "ISRG Root X1"
-    ];
-    extraLegoRenewFlags = extraLegoRunFlags;
-  };
-  # TODO: alternatively, we could clip the last cert IF it's expired,
-  # optionally outputting that to a new cert file.
-  # security.acme.defaults.postRun = "";
-
-  # create a self-signed SSL certificate for use with literally any domain.
-  # browsers will reject this, but proxies and local testing tools can be configured
-  # to accept it.
-  system.activationScripts.generate-x509-self-signed.text = ''
-    mkdir -p /var/www/certs/wildcard
-    test -f /var/www/certs/wildcard/key.pem || ${pkgs.openssl}/bin/openssl \
-      req -x509 -newkey rsa:4096 \
-      -keyout /var/www/certs/wildcard/key.pem \
-      -out /var/www/certs/wildcard/cert.pem \
-      -sha256 -nodes -days 3650 \
-      -addext 'subjectAltName=DNS:*' \
-      -subj '/CN=self-signed'
-    chmod 640 /var/www/certs/wildcard/{key,cert}.pem
-    chown root:nginx /var/www/certs/wildcard /var/www/certs/wildcard/{key,cert}.pem
-  '';
-}

hosts/by-name/servo/services/nixos-prebuild.nix

@@ -1,26 +0,0 @@
-{ lib, pkgs, ... }:
-
-lib.optionalAttrs false  # disabled until i can be sure it's not gonna OOM my server in the middle of the night
-{
-  systemd.services.nixos-prebuild = {
-    description = "build a nixos image with all updated deps";
-    path = with pkgs; [ coreutils git nix ];
-    script = ''
-      working=$(mktemp -d /tmp/nixos-prebuild.XXXXXX)
-      pushd "$working"
-      git clone https://git.uninsane.org/colin/nix-files.git \
-        && cd nix-files \
-        && nix flake update \
-        || true
-      RC=$(nix run "$working/nix-files#check" -- -j1 --cores 5 --builders "")
-      popd
-      rm -rf "$working"
-      exit "$RC"
-    '';
-  };
-
-  systemd.timers.nixos-prebuild = {
-    wantedBy = [ "multi-user.target" ];
-    timerConfig.OnCalendar = "11,23:00:00";
-  };
-}

hosts/by-name/servo/services/nixserve.nix

@@ -1,21 +0,0 @@
-{ config, ... }:
-
-{
-  services.nginx.virtualHosts."nixcache.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    # serverAliases = [ "nixcache" ];
-    locations."/".extraConfig = ''
-      proxy_pass http://localhost:${toString config.services.nix-serve.port};
-      proxy_set_header Host $host;
-      proxy_set_header X-Real-IP $remote_addr;
-      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    '';
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."nixcache" = "native";
-
-  sane.services.nixserve.enable = true;
-  sane.services.nixserve.secretKeyFile = config.sops.secrets.nix_serve_privkey.path;
-}

hosts/by-name/servo/services/ntfy/default.nix

@@ -1,14 +0,0 @@
-# ntfy: UnifiedPush notification delivery system
-# - used to get push notifications out of Matrix and onto a Phone (iOS, Android, or a custom client)
-{ config, ... }:
-{
-  imports = [
-    ./ntfy-waiter.nix
-    ./ntfy-sh.nix
-  ];
-  sops.secrets."ntfy-sh-topic" = {
-    mode = "0440";
-    owner = config.users.users.ntfy-sh.name;
-    group = config.users.users.ntfy-sh.name;
-  };
-}

hosts/by-name/servo/services/ntfy/ntfy-sh.nix

@@ -1,92 +0,0 @@
-# ntfy: UnifiedPush notification delivery system
-# - used to get push notifications out of Matrix and onto a Phone (iOS, Android, or a custom client)
-#
-# config options:
-# - <https://docs.ntfy.sh/config/#config-options>
-#
-# usage:
-# - ntfy sub https://ntfy.uninsane.org/TOPIC
-# - ntfy pub https://ntfy.uninsane.org/TOPIC "my message"
-# in production, TOPIC is a shared secret between the publisher (Matrix homeserver) and the subscriber (phone)
-#
-# administering:
-# - sudo -u ntfy-sh ntfy access
-#
-# debugging:
-# - make sure that the keepalives are good:
-#   - on the subscriber machine, run `lsof -i4` to find the port being used
-#   - `sudo tcpdump tcp port <p>`
-#     - shouldn't be too spammy
-#
-# matrix integration:
-# - the user must manually point synapse to the ntfy endpoint:
-#   - `curl --header "Authorization: <your_token>" --data '{ "app_display_name": "sane-nix moby", "app_id": "ntfy.uninsane.org", "data": { "url": "https://ntfy.uninsane.org/_matrix/push/v1/notify", "format": "event_id_only" }, "device_display_name": "sane-nix moby", "kind": "http", "lang": "en-US", "profile_tag": "", "pushkey": "https://ntfy.uninsane.org/TOPIC" }' localhost:8008/_matrix/client/v3/pushers/set`
-#     where the token is grabbed from Element's help&about page when logged in
-#   - to remove, send this `curl` with `"kind": null`
-{ config, lib, pkgs, ... }:
-let
-  # subscribers need a non-443 public port to listen on as a way to easily differentiate this traffic
-  # at the IP layer, to enable e.g. wake-on-lan.
-  altPort = 2587;
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    # not 100% necessary to persist this, but ntfy does keep a 12hr (by default) cache
-    # for pushing notifications to users who become offline.
-    # ACLs also live here.
-    { user = "ntfy-sh"; group ="ntfy-sh"; path = "/var/lib/ntfy-sh"; method = "bind"; }
-  ];
-
-  services.ntfy-sh.enable = true;
-  services.ntfy-sh.settings = {
-    base-url = "https://ntfy.uninsane.org";
-    behind-proxy = true;  # not sure if needed
-    # keepalive interval is a ntfy-specific keepalive thing, where it sends actual data down the wire.
-    # it's not simple TCP keepalive.
-    # defaults to 45s.
-    # note that the client may still do its own TCP-level keepalives, typically every 30s
-    keepalive-interval = "15m";
-    log-level = "trace";  # trace, debug, info (default), warn, error
-    auth-default-access = "deny-all";
-  };
-  systemd.services.ntfy-sh.serviceConfig.DynamicUser = lib.mkForce false;
-  systemd.services.ntfy-sh.preStart = ''
-    # make this specific topic read-write by world
-    # it would be better to use the token system, but that's extra complexity for e.g.
-    # how do i plumb a secret into the Matrix notification pusher
-    #
-    # note that this will fail upon first run, i.e. before ntfy has created its db.
-    # just restart the service.
-    topic=$(cat ${config.sops.secrets.ntfy-sh-topic.path})
-    ${pkgs.ntfy-sh}/bin/ntfy access everyone "$topic" read-write
-  '';
-
-
-  services.nginx.virtualHosts."ntfy.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    listen = [
-      { addr = "0.0.0.0"; port = altPort; ssl = true; }
-      { addr = "0.0.0.0"; port = 443;  ssl = true; }
-      { addr = "0.0.0.0"; port = 80;   ssl = false; }
-    ];
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:2586";
-      proxyWebsockets = true;  #< support websocket upgrades. without that, `ntfy sub` hangs silently
-      recommendedProxySettings = true; #< adds headers so ntfy logs include the real IP
-      extraConfig = ''
-        # absurdly long timeout (86400s=24h) so that we never hang up on clients.
-        # make sure the client is smart enough to detect a broken proxy though!
-        proxy_read_timeout 86400s;
-      '';
-    };
-  };
-  sane.dns.zones."uninsane.org".inet.CNAME."ntfy" = "native";
-
-  sane.ports.ports."${builtins.toString altPort}" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-ntfy.uninsane.org";
-  };
-}

hosts/by-name/servo/services/ntfy/ntfy-waiter

@@ -1,151 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p "python3.withPackages (ps: [  ])" -p ntfy-sh
-
-import argparse
-import logging
-import os
-import socket
-import subprocess
-import sys
-import threading
-import time
-
-logger = logging.getLogger(__name__)
-
-LISTEN_QUEUE = 3
-WAKE_MESSAGE = b'notification\n'
-
-class Client:
-    def __init__(self, sock, addr_info, live_after: float):
-        self.live_after = live_after
-        self.sock = sock
-        self.addr_info = addr_info
-
-    def __cmp__(self, other: 'Client'):
-        return cmp(self.addr_info, other.addr_info)
-
-    def try_notify(self, message: bytes) -> bool:
-        """
-        returns true if we send a packet to notify client.
-        fals otherwise (e.g. the socket is dead).
-        """
-        ttl = self.live_after - time.time()
-        if ttl > 0:
-            logger.debug(f"sleeping {ttl:.2f}s until client {self.addr_info} is ready to receive notification")
-            time.sleep(ttl)
-
-        try:
-            self.sock.sendall(message)
-        except Exception as e:
-            logger.warning(f"failed to notify client {self.addr_info} {e}")
-            return False
-        else:
-            logger.info(f"successfully notified {self.addr_info}: {message}")
-            return True
-
-class Adapter:
-    def __init__(self, host: str, port: int, silence: int, topic: str):
-        self.host = host
-        self.port = port
-        self.silence = silence
-        self.topic = topic
-        self.clients = set()
-
-    def log_clients(self):
-        clients_str = '\n'.join(f'  {c.addr_info}' for c in self.clients)
-        logger.debug(f"clients alive ({len(self.clients)}):\n{clients_str}")
-
-    def add_client(self, client: Client):
-        # it's a little bit risky to keep more than one client at the same IP address,
-        # because it's possible a notification comes in and we ring the old connection,
-        # even when the new connection says "don't ring yet".
-        for c in set(self.clients):
-            if c.addr_info[0] == client.addr_info[0]:
-                logger.info(f"purging old client before adding new one at same address: {c.addr_info} -> {client.addr_info}")
-                self.clients.remove(c)
-
-        logger.info(f"accepted client at {client.addr_info}")
-        self.clients.add(client)
-
-    def listener_loop(self):
-        logger.info(f"listening for connections on {self.host}:{self.port}")
-        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        s.bind((self.host, self.port))
-        s.listen(LISTEN_QUEUE)
-        while True:
-            conn, addr_info = s.accept()
-            self.add_client(Client(conn, addr_info, live_after = time.time() + self.silence))
-
-    def notify_clients(self, message: bytes = WAKE_MESSAGE):
-        # notify every client, and drop any which have disconnected.
-        # note that we notify based on age (oldest -> youngest)
-        # because notifying young clients might entail sleeping until they're ready.
-        clients = sorted(self.clients, key=lambda c: (c.live_after, c.addr_info))
-
-        dead_clients = [
-            c for c in clients if not c.try_notify(message)
-        ]
-        for c in dead_clients:
-            self.clients.remove(c)
-
-        self.log_clients()
-
-    def notify_loop(self):
-        logger.info("waiting for notification events")
-        ntfy_proc = subprocess.Popen(
-            [
-                "ntfy",
-                "sub",
-                f"https://ntfy.uninsane.org/{self.topic}"
-            ],
-            stdout=subprocess.PIPE
-        )
-        for line in iter(ntfy_proc.stdout.readline, b''):
-            logger.debug(f"received notification: {line}")
-            self.notify_clients()
-
-def get_topic() -> str:
-    return open('/run/secrets/ntfy-sh-topic', 'rt').read().strip()
-
-def run_forever(callable):
-    try:
-        callable()
-    except Exception as e:
-        logger.error(f"{callable} failed: {e}")
-    else:
-        logger.error(f"{callable} unexpectedly returned")
-    # sys.exit(1)
-    os._exit(1)  # sometimes `sys.exit()` doesn't actually exit...
-
-def main():
-    logging.basicConfig()
-    logging.getLogger().setLevel(logging.DEBUG)
-
-    parser = argparse.ArgumentParser(description="accept connections and notify the other end upon ntfy activity, with a guaranteed amount of silence")
-    parser.add_argument('--verbose', action='store_true')
-    parser.add_argument('--host', type=str, default='')
-    parser.add_argument('--port', type=int)
-    parser.add_argument('--silence', type=int, help="number of seconds to remain silent upon accepting a connection")
-
-    args = parser.parse_args()
-
-    if args.verbose:
-        logging.getLogger().setLevel(logging.DEBUG)
-    else:
-        logging.getLogger().setLevel(logging.INFO)
-
-    adapter = Adapter(args.host, args.port, args.silence, get_topic())
-
-    listener_loop = threading.Thread(target=run_forever, name="listener_loop", args=(adapter.listener_loop,))
-    notify_loop = threading.Thread(target=run_forever, name="notify_loop", args=(adapter.notify_loop,))
-
-    # TODO: this method of exiting seems to sometimes leave the listener behind (?)
-    # preventing anyone else from re-binding the port.
-    listener_loop.start()
-    notify_loop.start()
-    listener_loop.join()
-    notify_loop.join()
-
-
-if __name__ == '__main__':
-    main()

hosts/by-name/servo/services/ntfy/ntfy-waiter.nix

@@ -1,72 +0,0 @@
-# service which adapts ntfy-sh into something suitable specifically for the Pinephone's
-# wake-on-lan (WoL) feature.
-# notably, it provides a mechanism by which the caller can be confident of an interval in which
-# zero traffic will occur on the TCP connection, thus allowing it to enter sleep w/o fear of hitting
-# race conditions in the Pinephone WoL feature.
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.sane.ntfy-waiter;
-  portLow = 5550;
-  portHigh = 5559;
-  portRange = lib.range portLow portHigh;
-  numPorts = portHigh - portLow + 1;
-  mkService = port: let
-    silence = port - portLow;
-    flags = lib.optional cfg.verbose "--verbose";
-    cli = [
-      "${cfg.package}/bin/ntfy-waiter"
-      "--port"
-      "${builtins.toString port}"
-      "--silence"
-      "${builtins.toString silence}"
-    ] ++ flags;
-  in {
-    "ntfy-waiter-${builtins.toString silence}" = {
-      # TODO: run not as root (e.g. as ntfy-sh)
-      description = "wait for notification, with ${builtins.toString silence} seconds of guaranteed silence";
-      serviceConfig = {
-        Type = "simple";
-        Restart = "always";
-        RestartSec = "5s";
-        ExecStart = lib.concatStringsSep " " cli;
-      };
-      after = [ "network.target" ];
-      wantedBy = [ "default.target" ];
-    };
-  };
-in
-{
-  options = with lib; {
-    sane.ntfy-waiter.enable = mkOption {
-      type = types.bool;
-      default = true;
-    };
-    sane.ntfy-waiter.verbose = mkOption {
-      type = types.bool;
-      default = true;
-    };
-    sane.ntfy-waiter.package = mkOption {
-      type = types.package;
-      default = pkgs.static-nix-shell.mkPython3Bin {
-        pname = "ntfy-waiter";
-        srcRoot = ./.;
-        pkgs = [ "ntfy-sh" ];
-      };
-      description = ''
-        exposed to provide an attr-path by which one may build the package for manual testing.
-      '';
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    sane.ports.ports = lib.mkMerge (lib.forEach portRange (port: {
-      "${builtins.toString port}" = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-notification-waiter-${builtins.toString (port - portLow + 1)}-of-${builtins.toString numPorts}";
-      };
-    }));
-    systemd.services = lib.mkMerge (builtins.map mkService portRange);
-  };
-}

hosts/by-name/servo/services/pict-rs.nix

@@ -1,23 +0,0 @@
-# pict-rs is an image database/store used by Lemmy.
-# i don't explicitly activate it here -- just adjust its defaults to be a bit friendlier
-{ config, lib, ... }:
-let
-  cfg = config.services.pict-rs;
-in
-{
-  sane.persist.sys.byStore.plaintext = lib.mkIf cfg.enable [
-    { user = "pict-rs"; group = "pict-rs"; path = cfg.dataDir; method = "bind"; }
-  ];
-
-  systemd.services.pict-rs.serviceConfig = {
-    # fix to use a normal user so we can configure perms correctly
-    DynamicUser = lib.mkForce false;
-    User = "pict-rs";
-    Group = "pict-rs";
-  };
-  users.groups.pict-rs = {};
-  users.users.pict-rs = {
-    group = "pict-rs";
-    isSystemUser = true;
-  };
-}

hosts/by-name/servo/services/pleroma.nix

@@ -1,212 +0,0 @@
-# docs:
-# - <https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/networking/pleroma.nix>
-# - <https://docs.pleroma.social/backend/configuration/cheatsheet/>
-# example config:
-# - <https://git.pleroma.social/pleroma/pleroma/-/blob/develop/config/config.exs>
-#
-# to run it in a oci-container: <https://github.com/barrucadu/nixfiles/blob/master/services/pleroma.nix>
-#
-# admin frontend: <https://fed.uninsane.org/pleroma/admin>
-{ config, pkgs, ... }:
-
-let
-  logLevel = "warn";
-  # logLevel = "debug";
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "pleroma"; group = "pleroma"; path = "/var/lib/pleroma"; method = "bind"; }
-  ];
-  services.pleroma.enable = true;
-  services.pleroma.secretConfigFile = config.sops.secrets.pleroma_secrets.path;
-  services.pleroma.configs = [
-    ''
-    import Config
-
-    config :pleroma, Pleroma.Web.Endpoint,
-      url: [host: "fed.uninsane.org", scheme: "https", port: 443],
-      http: [ip: {127, 0, 0, 1}, port: 4000]
-    #   secret_key_base: "{secrets.pleroma.secret_key_base}",
-    #   signing_salt: "{secrets.pleroma.signing_salt}"
-
-    config :pleroma, :instance,
-      name: "Perfectly Sane",
-      description: "Single-user Pleroma instance",
-      email: "admin.pleroma@uninsane.org",
-      notify_email: "notify.pleroma@uninsane.org",
-      limit: 5000,
-      registrations_open: true,
-      account_approval_required: true,
-      max_pinned_statuses: 5,
-      external_user_synchronization: true
-
-    # docs: https://hexdocs.pm/swoosh/Swoosh.Adapters.Sendmail.html
-    # test mail config with sudo -u pleroma ./bin/pleroma_ctl email test --to someone@somewhere.net
-    config :pleroma, Pleroma.Emails.Mailer,
-      enabled: true,
-      adapter: Swoosh.Adapters.Sendmail,
-      cmd_path: "${pkgs.postfix}/bin/sendmail"
-
-    config :pleroma, Pleroma.User,
-      restricted_nicknames: [ "admin", "uninsane", "root" ]
-
-    config :pleroma, :media_proxy,
-      enabled: false,
-      redirect_on_failure: true
-      #base_url: "https://cache.pleroma.social"
-
-    # see for reference:
-    # - `force_custom_plan`: <https://docs.pleroma.social/backend/configuration/postgresql/#disable-generic-query-plans>
-    config :pleroma, Pleroma.Repo,
-      adapter: Ecto.Adapters.Postgres,
-      username: "pleroma",
-      database: "pleroma",
-      hostname: "localhost",
-      pool_size: 10,
-      prepare: :named,
-      parameters: [
-          plan_cache_mode: "force_custom_plan"
-      ]
-    # XXX: prepare: :named is needed only for PG <= 12
-    #   prepare: :named,
-    #   password: "{secrets.pleroma.db_password}",
-
-    # Configure web push notifications
-    config :web_push_encryption, :vapid_details,
-      subject: "mailto:notify.pleroma@uninsane.org"
-    #   public_key: "{secrets.pleroma.vapid_public_key}",
-    #   private_key: "{secrets.pleroma.vapid_private_key}"
-
-    # config :joken, default_signer: "{secrets.pleroma.joken_default_signer}"
-
-    config :pleroma, :database, rum_enabled: false
-    config :pleroma, :instance, static_dir: "/var/lib/pleroma/instance/static"
-    config :pleroma, Pleroma.Uploaders.Local, uploads: "/var/lib/pleroma/uploads"
-    config :pleroma, configurable_from_database: false
-
-    # strip metadata from uploaded images
-    config :pleroma, Pleroma.Upload, filters: [Pleroma.Upload.Filter.Exiftool.StripLocation]
-
-    # TODO: GET /api/pleroma/captcha is broken
-    # there was a nixpkgs PR to fix this around 2022/10 though.
-    config :pleroma, Pleroma.Captcha,
-      enabled: false,
-      method: Pleroma.Captcha.Native
-
-
-    # (enabled by colin)
-    # Enable Strict-Transport-Security once SSL is working:
-    config :pleroma, :http_security,
-      sts: true
-
-    # docs: https://docs.pleroma.social/backend/configuration/cheatsheet/#logger
-    config :logger,
-      backends: [{ExSyslogger, :ex_syslogger}]
-
-    config :logger, :ex_syslogger,
-      level: :${logLevel}
-
-    # policies => list of message rewriting facilities to be enabled
-    # transparence => whether to publish these rules in node_info (and /about)
-    config :pleroma, :mrf,
-      policies: [Pleroma.Web.ActivityPub.MRF.SimplePolicy],
-      transparency: true
-
-    # reject => { host, reason }
-    config :pleroma, :mrf_simple,
-      reject: [ {"threads.net", "megacorp"}, {"*.threads.net", "megacorp"} ]
-      # reject: [ [host: "threads.net", reason: "megacorp"], [host: "*.threads.net", reason: "megacorp"] ]
-
-    # XXX colin: not sure if this actually _does_ anything
-    # better to steal emoji from other instances?
-    # - <https://docs.pleroma.social/backend/configuration/cheatsheet/#mrf_steal_emoji>
-    config :pleroma, :emoji,
-      shortcode_globs: ["/emoji/**/*.png"],
-      groups: [
-        "Cirno": "/emoji/cirno/*.png",
-        "Kirby": "/emoji/kirby/*.png",
-        "Bun": "/emoji/bun/*.png",
-        "Yuru Camp": "/emoji/yuru_camp/*.png",
-      ]
-    ''
-  ];
-
-  systemd.services.pleroma.path = [
-    # something inside pleroma invokes `sh` w/o specifying it by path, so this is needed to allow pleroma to start
-    pkgs.bash
-    # used by Pleroma to strip geo tags from uploads
-    pkgs.exiftool
-    # i saw some errors when pleroma was shutting down about it not being able to find `awk`. probably not critical
-    pkgs.gawk
-    # needed for email operations like password reset
-    pkgs.postfix
-  ];
-
-  systemd.services.pleroma.serviceConfig = {
-    # postgres can be slow to service early requests, preventing pleroma from starting on the first try
-    Restart = "on-failure";
-    RestartSec = "10s";
-  };
-
-  # systemd.services.pleroma.serviceConfig = {
-  #   # required for sendmail. see https://git.pleroma.social/pleroma/pleroma/-/issues/2259
-  #   NoNewPrivileges = lib.mkForce false;
-  #   PrivateTmp = lib.mkForce false;
-  #   CapabilityBoundingSet = lib.mkForce "~";
-  # };
-
-  # this is required to allow pleroma to send email.
-  # raw `sendmail` works, but i think pleroma's passing it some funny flags or something, idk.
-  # hack to fix that.
-  users.users.pleroma.extraGroups = [ "postdrop" ];
-
-  # Pleroma server and web interface
-  # TODO: enable publog?
-  services.nginx.virtualHosts."fed.uninsane.org" = {
-    forceSSL = true;  # pleroma redirects to https anyway
-    enableACME = true;
-    # inherit kTLS;
-    locations."/" = {
-      proxyPass = "http://127.0.0.1:4000";
-      recommendedProxySettings = true;
-      # documented: https://git.pleroma.social/pleroma/pleroma/-/blob/develop/installation/pleroma.nginx
-      extraConfig = ''
-        # XXX colin: this block is in the nixos examples: i don't understand all of it
-        add_header 'Access-Control-Allow-Origin' '*' always;
-        add_header 'Access-Control-Allow-Methods' 'POST, PUT, DELETE, GET, PATCH, OPTIONS' always;
-        add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, Idempotency-Key' always;
-        add_header 'Access-Control-Expose-Headers' 'Link, X-RateLimit-Reset, X-RateLimit-Limit, X-RateLimit-Remaining, X-Request-Id' always;
-        if ($request_method = OPTIONS) {
-            return 204;
-        }
-
-        add_header X-XSS-Protection "1; mode=block";
-        add_header X-Permitted-Cross-Domain-Policies none;
-        add_header X-Frame-Options DENY;
-        add_header X-Content-Type-Options nosniff;
-        add_header Referrer-Policy same-origin;
-        add_header X-Download-Options noopen;
-
-        # proxy_http_version 1.1;
-        # proxy_set_header Upgrade $http_upgrade;
-        # proxy_set_header Connection "upgrade";
-        # # proxy_set_header Host $http_host;
-        # proxy_set_header Host $host;
-        # proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-
-        # colin: added this due to Pleroma complaining in its logs
-        # proxy_set_header X-Real-IP $remote_addr;
-        # proxy_set_header X-Forwarded-Proto $scheme;
-
-        # NB: this defines the maximum upload size
-        client_max_body_size 16m;
-      '';
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."fed" = "native";
-
-  sops.secrets."pleroma_secrets" = {
-    owner = config.users.users.pleroma.name;
-  };
-}

hosts/by-name/servo/services/postgres.nix

@@ -1,89 +0,0 @@
-{ pkgs, ... }:
-
-let
-  GiB = n: MiB 1024*n;
-  MiB = n: KiB 1024*n;
-  KiB = n: 1024*n;
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode?
-    { user = "postgres"; group = "postgres"; path = "/var/lib/postgresql"; method = "bind"; }
-  ];
-  services.postgresql.enable = true;
-
-  # HOW TO UPDATE:
-  # postgres version updates are manual and require intervention.
-  # - `sane-stop-all-servo`
-  # - `systemctl start postgresql`
-  # - as `sudo su postgres`:
-  #   - `cd /var/log/postgresql`
-  #   - `pg_dumpall > state.sql`
-  #   - `echo placeholder > <new_version>`  # to prevent state from being created earlier than we want
-  # - then, atomically:
-  #   - update the `services.postgresql.package` here
-  #   - `dataDir` is atomically updated to match package; don't touch
-  #   - `nixos-rebuild --flake . switch ; sane-stop-all-servo`
-  # - `sudo rm -rf /var/lib/postgresql/<new_version>`
-  # - `systemctl start postgresql`
-  # - as `sudo su postgres`:
-  #   - `cd /var/lib/postgreql`
-  #   - `psql -f state.sql`
-  # - restart dependent services (maybe test one at a time)
-
-  services.postgresql.package = pkgs.postgresql_15;
-
-
-  # XXX colin: for a proper deploy, we'd want to include something for Pleroma here too.
-  # services.postgresql.initialScript = pkgs.writeText "synapse-init.sql" ''
-  #   CREATE ROLE "matrix-synapse" WITH LOGIN PASSWORD '<password goes here>';
-  #   CREATE DATABASE "matrix-synapse" WITH OWNER "matrix-synapse"
-  #     TEMPLATE template0
-  #     ENCODING = "UTF8"
-  #     LC_COLLATE = "C"
-  #     LC_CTYPE = "C";
-  # '';
-
-  # perf tuning
-  # - for recommended values see: <https://pgtune.leopard.in.ua/>
-  # - for official docs (sparse), see: <https://www.postgresql.org/docs/11/config-setting.html#CONFIG-SETTING-CONFIGURATION-FILE>
-  services.postgresql.settings = {
-    # DB Version: 15
-    # OS Type: linux
-    # DB Type: web
-    # Total Memory (RAM): 32 GB
-    # CPUs num: 12
-    # Data Storage: ssd
-    max_connections = 200;
-    shared_buffers = "8GB";
-    effective_cache_size = "24GB";
-    maintenance_work_mem = "2GB";
-    checkpoint_completion_target = 0.9;
-    wal_buffers = "16MB";
-    default_statistics_target = 100;
-    random_page_cost = 1.1;
-    effective_io_concurrency = 200;
-    work_mem = "10485kB";
-    min_wal_size = "1GB";
-    max_wal_size = "4GB";
-    max_worker_processes = 12;
-    max_parallel_workers_per_gather = 4;
-    max_parallel_workers = 12;
-    max_parallel_maintenance_workers = 4;
-  };
-
-  # daily backups to /var/backup
-  services.postgresqlBackup.enable = true;
-
-  # common admin operations:
-  #   sudo systemctl start postgresql
-  #   sudo -u postgres psql
-  #   > \l   # lists all databases
-  #   > \du  # lists all roles
-  #   > \c pleroma  # connects to database by name
-  #   > \d   # shows all tables
-  #   > \q   # exits psql
-  # dump/restore (-F t = tar):
-  #   sudo -u postgres pg_dump -F t pleroma > /backup/pleroma-db.tar
-  #   sudo -u postgres -g postgres pg_restore -d pleroma /backup/pleroma-db.tar
-}

hosts/by-name/servo/services/prosody/default.nix

@@ -1,289 +0,0 @@
-# example configs:
-# - official: <https://prosody.im/doc/example_config>
-# - nixos: <https://github.com/kittywitch/nixfiles/blob/main/services/prosody.nix>
-# config options:
-# - <https://prosody.im/doc/configure>
-#
-# modules:
-# - main: <https://prosody.im/doc/modules>
-# - community: <https://modules.prosody.im/index.html>
-#
-# debugging:
-# - logging:
-#   - enable `stanza_debug` module
-#   - enable `log.debug = "*syslog"` in extraConfig
-# - interactive:
-#   - `telnet localhost 5582` (this is equal to `prosodyctl shell` -- but doesn't hang)
-#     - `watch:stanzas(target_spec, filter)` -> to log stanzas, for version > 0.12
-#   - console docs: <https://prosody.im/doc/console>
-#   - can modify/inspect arbitrary internals (lua) by prefixing line with `> `
-#     - e.g. `> _G` to print all globals
-#
-# sanity checks:
-# - `sudo -u prosody -g prosody prosodyctl check connectivity`
-# - `sudo -u prosody -g prosody prosodyctl check turn`
-# - `sudo -u prosody -g prosody prosodyctl check turn -v --ping=stun.conversations.im`
-#   - checks that my stun/turn server is usable by clients of conversations.im (?)
-# - `sudo -u prosody -g prosody prosodyctl check`  (dns, config, certs)
-#
-#
-# create users with:
-# - `sudo -u prosody prosodyctl adduser colin@uninsane.org`
-#
-#
-# federation/support matrix:
-# - nixnet.services (runs ejabberd):
-#   - WORKS: sending and receiving PMs and calls (2023/10/15)
-#     - N.B.: it didn't originally work; was solved by disabling the lua-unbound DNS option & forcing the system/local resolver
-# - cheogram (XMPP <-> SMS gateway):
-#   - WORKS: sending and receiving PMs, images (2023/10/15)
-#   - PARTIAL: calls (xmpp -> tel works; tel -> xmpp fails)
-#     - maybe i need to setup stun/turn
-#
-# TODO:
-# - enable push notifications (mod_cloud_notify)
-# - optimize coturn (e.g. move off of the VPN!)
-# - ensure muc is working
-# - enable file uploads
-#   - "upload.xmpp.uninsane.org:http_upload: URL: <https://upload.xmpp.uninsane.org:5281/upload> - Ensure this can be reached by users"
-# - disable or fix bosh (jabber over http):
-#   - "certmanager: No certificate/key found for client_https port 0"
-
-{ lib, pkgs, ... }:
-
-let
-  # enables very verbose logging
-  enableDebug = false;
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "prosody"; group = "prosody"; path = "/var/lib/prosody"; method = "bind"; }
-  ];
-  sane.ports.ports."5000" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-xmpp-prosody-fileshare-proxy65";
-  };
-  sane.ports.ports."5222" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-xmpp-client-to-server";
-  };
-  sane.ports.ports."5223" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-xmpps-client-to-server";  # XMPP over TLS
-  };
-  sane.ports.ports."5269" = {
-    protocol = [ "tcp" ];
-    visibleTo.wan = true;
-    description = "colin-xmpp-server-to-server";
-  };
-  sane.ports.ports."5270" = {
-    protocol = [ "tcp" ];
-    visibleTo.wan = true;
-    description = "colin-xmpps-server-to-server";  # XMPP over TLS
-  };
-  sane.ports.ports."5280" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-xmpp-bosh";
-  };
-  sane.ports.ports."5281" = {
-    protocol = [ "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    description = "colin-xmpp-prosody-https";  # necessary?
-  };
-
-  users.users.prosody.extraGroups = [
-    "nginx"  # provide access to certs
-    "ntfy-sh"  # access to secret ntfy topic
-  ];
-
-  security.acme.certs."uninsane.org".extraDomainNames = [
-    "xmpp.uninsane.org"
-    "conference.xmpp.uninsane.org"
-    "upload.xmpp.uninsane.org"
-  ];
-
-  # exists so the XMPP server's cert can obtain altNames for all its resources
-  services.nginx.virtualHosts."xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."conference.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-  services.nginx.virtualHosts."upload.xmpp.uninsane.org" = {
-    useACMEHost = "uninsane.org";
-  };
-
-  sane.dns.zones."uninsane.org".inet = {
-    # XXX: SRV records have to point to something with a A/AAAA record; no CNAMEs
-    A."xmpp" =                "%ANATIVE%";
-    CNAME."conference.xmpp" = "xmpp";
-    CNAME."upload.xmpp" =     "xmpp";
-
-    # _Service._Proto.Name    TTL Class SRV    Priority Weight Port Target
-    # - <https://xmpp.org/extensions/xep-0368.html>
-    # something's requesting the SRV records for conference.xmpp, so let's include it
-    # nothing seems to request XMPP SRVs for the other records (except @)
-    # lower numerical priority field tells clients to prefer this method
-    SRV."_xmpps-client._tcp.conference.xmpp" =       "3 50 5223 xmpp";
-    SRV."_xmpps-server._tcp.conference.xmpp" =       "3 50 5270 xmpp";
-    SRV."_xmpp-client._tcp.conference.xmpp" =        "5 50 5222 xmpp";
-    SRV."_xmpp-server._tcp.conference.xmpp" =        "5 50 5269 xmpp";
-
-    SRV."_xmpps-client._tcp" =                "3 50 5223 xmpp";
-    SRV."_xmpps-server._tcp" =                "3 50 5270 xmpp";
-    SRV."_xmpp-client._tcp" =                 "5 50 5222 xmpp";
-    SRV."_xmpp-server._tcp" =                 "5 50 5269 xmpp";
-  };
-
-  # help Prosody find its certificates.
-  # pointing it to /var/lib/acme doesn't quite work because it expects the private key
-  # to be named `privkey.pem` instead of acme's `key.pem`
-  # <https://prosody.im/doc/certificates#automatic_location>
-  sane.fs."/etc/prosody/certs/uninsane.org/fullchain.pem" = {
-    symlink.target = "/var/lib/acme/uninsane.org/fullchain.pem";
-    wantedBeforeBy = [ "prosody.service" ];
-  };
-  sane.fs."/etc/prosody/certs/uninsane.org/privkey.pem" = {
-    symlink.target = "/var/lib/acme/uninsane.org/key.pem";
-    wantedBeforeBy = [ "prosody.service" ];
-  };
-
-  services.prosody = {
-    enable = true;
-    package = pkgs.prosody.override {
-      # XXX(2023/10/15): build without lua-unbound support.
-      # this forces Prosody to fall back to the default Lua DNS resolver, which seems more reliable.
-      # fixes errors like "unbound.queryXYZUV: Resolver error: out of memory"
-      # related: <https://issues.prosody.im/1737#comment-11>
-      lua.withPackages = selector: pkgs.lua.withPackages (p:
-        selector (p // { luaunbound = null; })
-      );
-      # withCommunityModules = [ "turncredentials" ];
-    };
-    admins = [ "colin@uninsane.org" ];
-    # allowRegistration = false;  # defaults to false
-
-    muc = [
-      {
-        domain = "conference.xmpp.uninsane.org";
-      }
-    ];
-    uploadHttp.domain = "upload.xmpp.uninsane.org";
-
-    virtualHosts = {
-      # "Prosody requires at least one enabled VirtualHost to function. You can
-      # safely remove or disable 'localhost' once you have added another."
-      # localhost = {
-      #   domain = "localhost";
-      #   enabled = true;
-      # };
-      "xmpp.uninsane.org" = {
-        domain = "uninsane.org";
-        enabled = true;
-      };
-    };
-
-    ## modules:
-    # these are enabled by default, via <repo:nixos/nixpkgs:/pkgs/servers/xmpp/prosody/default.nix>
-    # - cloud_notify
-    # - http_upload
-    # - vcard_muc
-    # these are enabled by the module defaults (services.prosody.modules.<foo>)
-    # - admin_adhoc
-    # - blocklist
-    # - bookmarks
-    # - carbons
-    # - cloud_notify
-    # - csi
-    # - dialback
-    # - disco
-    # - http_files
-    # - mam
-    # - pep
-    # - ping
-    # - private
-    #   - XEP-0049: let clients store arbitrary (private) data on the server
-    # - proxy65
-    #   - XEP-0065: allow server to proxy file transfers between two clients who are behind NAT
-    # - register
-    # - roster
-    # - saslauth
-    # - smacks
-    # - time
-    # - tls
-    # - uptime
-    # - vcard_legacy
-    # - version
-
-    extraPluginPaths = [ ./modules ];
-
-    extraModules = [
-      # admin_shell: allows `prosodyctl shell` to work
-      # see: <https://prosody.im/doc/modules/mod_admin_shell>
-      # see: <https://prosody.im/doc/console>
-      "admin_shell"
-      "admin_telnet"  #< needed by admin_shell
-      # lastactivity: XEP-0012: allow users to query how long another user has been idle for
-      # - not sure why i enabled this; think it was in someone's config i referenced
-      "lastactivity"
-      # allows prosody to share TURN/STUN secrets with XMPP clients to provide them access to the coturn server.
-      # see: <https://prosody.im/doc/coturn>
-      "turn_external"
-      # legacy coturn integration
-      # see: <https://modules.prosody.im/mod_turncredentials.html>
-      # "turncredentials"
-      "sane_ntfy"
-    ] ++ lib.optionals enableDebug [
-      "stanza_debug"  #< logs EVERY stanza as debug: <https://prosody.im/doc/modules/mod_stanza_debug>
-    ];
-
-    extraConfig = ''
-      local function readAll(file)
-        local f = assert(io.open(file, "rb"))
-        local content = f:read("*all")
-        f:close()
-        -- remove trailing newline
-        return string.gsub(content, "%s+", "")
-      end
-
-      -- logging docs:
-      -- - <https://prosody.im/doc/logging>
-      -- - <https://prosody.im/doc/advanced_logging>
-      -- levels: debug, info, warn, error
-      log = {
-        ${if enableDebug then "debug" else "info"} = "*syslog";
-      }
-
-      -- see: <https://prosody.im/doc/certificates#automatic_location>
-      -- try to solve: "certmanager: Error indexing certificate directory /etc/prosody/certs: cannot open /etc/prosody/certs: No such file or directory"
-      -- only, this doesn't work because prosody doesn't like acme's naming scheme
-      -- certificates = "/var/lib/acme"
-
-      c2s_direct_tls_ports = { 5223 }
-      s2s_direct_tls_ports = { 5270 }
-
-      turn_external_host = "turn.uninsane.org"
-      turn_external_secret = readAll("/var/lib/coturn/shared_secret.bin")
-      -- turn_external_user = "prosody"
-
-      -- legacy mod_turncredentials integration
-      -- turncredentials_host = "turn.uninsane.org"
-      -- turncredentials_secret = readAll("/var/lib/coturn/shared_secret.bin")
-
-      ntfy_binary = "${pkgs.ntfy-sh}/bin/ntfy"
-      ntfy_topic = readAll("/run/secrets/ntfy-sh-topic")
-
-      -- s2s_require_encryption = true
-      -- c2s_require_encryption = true
-    '';
-  };
-}

hosts/by-name/servo/services/prosody/modules/mod_sane_ntfy.lua

@@ -1,52 +0,0 @@
--- simple proof-of-concept Prosody module
--- module development guide: <https://prosody.im/doc/developers/modules>
--- module API docs: <https://prosody.im/doc/developers/moduleapi>
---
--- much of this code is lifted from Prosody's own `mod_cloud_notify`
-
-local jid = require"util.jid";
-
-local ntfy = module:get_option_string("ntfy_binary", "ntfy");
-local ntfy_topic = module:get_option_string("ntfy_topic", "xmpp");
-
-module:log("info", "initialized");
-
-local function is_urgent(stanza)
-  if stanza.name == "message" then
-    if stanza:get_child("propose", "urn:xmpp:jingle-message:0") then
-      return true, "jingle call";
-    end
-  end
-end
-
-local function publish_ntfy(message)
-  -- message should be the message to publish
-  local ntfy_url = string.format("https://ntfy.uninsane.org/%s", ntfy_topic)
-  local cmd = string.format("%s pub %q %q", ntfy, ntfy_url, message)
-  module.log("debug", "invoking ntfy: %s", cmd)
-  local success, reason, code = os.execute(cmd)
-  if not success then
-    module:log("warn", "ntfy failed: %s => %s %d", cmd, reason, code)
-  end
-end
-
-
-local function archive_message_added(event)
-  -- event is: { origin = origin, stanza = stanza, for_user = store_user, id = id }
-  local stanza = event.stanza;
-  local to = stanza.attr.to;
-  to = to and jid.split(to) or event.origin.username;
-
-  -- only notify if the stanza destination is the mam user we store it for
-  if event.for_user == to then
-    local is_urgent_stanza, urgent_reason = is_urgent(event.stanza);
-
-    if is_urgent_stanza then
-      module:log("info", "urgent push for %s (%s)", to, urgent_reason);
-      publish_ntfy(urgent_reason)
-    end
-  end
-end
-
-
-module:hook("archive-message-added", archive_message_added);

hosts/by-name/servo/services/slskd.nix

@@ -1,74 +0,0 @@
-# Soulseek daemon (p2p file sharing with an emphasis on Music)
-# docs: <https://github.com/slskd/slskd/blob/master/docs/config.md>
-#
-# config precedence (higher precedence overrules lower precedence):
-# - Default Values < Environment Variables < YAML Configuraiton File < Command Line Arguments
-{ config, lib, ... }:
-{
-  sane.persist.sys.byStore.plaintext = [
-    { user = "slskd"; group = "slskd"; path = "/var/lib/slskd"; method = "bind"; }
-  ];
-  sops.secrets."slskd_env" = {
-    owner = config.users.users.slskd.name;
-    mode = "0400";
-  };
-
-  users.users.slskd.extraGroups = [ "media" ];
-
-  sane.ports.ports."50000" = {
-    protocol = [ "tcp" ];
-    # not visible to WAN: i run this in a separate netns
-    visibleTo.ovpn = true;
-    description = "colin-soulseek";
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."soulseek" = "native";
-
-  services.nginx.virtualHosts."soulseek.uninsane.org" = {
-    forceSSL = true;
-    enableACME = true;
-    locations."/" = {
-      proxyPass = "http://10.0.1.6:5001";
-      proxyWebsockets = true;
-    };
-  };
-
-  services.slskd.enable = true;
-  # env file, for auth (SLSKD_SLSK_PASSWORD, SLSKD_SLSK_USERNAME)
-  services.slskd.environmentFile = config.sops.secrets.slskd_env.path;
-  services.slskd.settings = {
-    soulseek.diagnostic_level = "Debug";  # one of "None"|"Warning"|"Info"|"Debug"
-    shares.directories = [
-      # folders to share
-      # syntax: <https://github.com/slskd/slskd/blob/master/docs/config.md#directories>
-      # [Alias]/path/on/disk
-      # NOTE: Music library is quick to scan; videos take a solid 10min to scan.
-      # TODO: re-enable the other libraries
-      # "[Audioooks]/var/media/Books/Audiobooks"
-      # "[Books]/var/media/Books/Books"
-      # "[Manga]/var/media/Books/Visual"
-      # "[games]/var/media/games"
-      "[Music]/var/media/Music"
-      # "[Film]/var/media/Videos/Film"
-      # "[Shows]/var/media/Videos/Shows"
-    ];
-    # directories.downloads = "..." # TODO
-    # directories.incomplete = "..." # TODO
-    # what unit is this? kbps??
-    global.upload.speed_limit = 32000;
-    web.logging = true;
-    # debug = true;
-    flags.no_logo = true;  # don't show logo at start
-    # flags.volatile = true;  # store searches and active transfers in RAM (completed transfers still go to disk). rec for btrfs/zfs
-  };
-
-  systemd.services.slskd = {
-    serviceConfig = {
-      # run this behind the OVPN static VPN
-      NetworkNamespacePath = "/run/netns/ovpns";
-      Restart = lib.mkForce "always";  # exits "success" when it fails to connect to soulseek server
-      RestartSec = "60s";
-      Group = "media";
-    };
-  };
-}

hosts/by-name/servo/services/transmission.nix

@@ -1,125 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  # 2023/09/06: nixpkgs `transmission` defaults to old 3.00
-  # 2024/02/15: some torrent trackers whitelist clients; everyone is still on 3.00 for some reason :|
-  #             some do this via peer-id (e.g. baka); others via user-agent (e.g. MAM).
-  #             peer-id format is essentially the same between 3.00 and 4.x (just swap the MAJOR/MINOR/PATCH numbers).
-  #             user-agent format has changed. `Transmission/3.00` (old) v.s. `TRANSMISSION/MAJ.MIN.PATCH` (new).
-  realTransmission = pkgs.transmission_4;
-  realVersion = {
-    major = lib.versions.major realTransmission.version;
-    minor = lib.versions.minor realTransmission.version;
-    patch = lib.versions.patch realTransmission.version;
-  };
-  package = realTransmission.overrideAttrs (upstream: {
-    # `cmakeFlags = [ "-DTR_VERSION_MAJOR=3" ]`, etc, doesn't seem to take effect.
-    postPatch = (upstream.postPatch or "") + ''
-      substituteInPlace CMakeLists.txt \
-        --replace-fail 'TR_VERSION_MAJOR "${realVersion.major}"' 'TR_VERSION_MAJOR "3"' \
-        --replace-fail 'TR_VERSION_MINOR "${realVersion.minor}"' 'TR_VERSION_MINOR "0"' \
-        --replace-fail 'TR_VERSION_PATCH "${realVersion.patch}"' 'TR_VERSION_PATCH "0"' \
-        --replace-fail 'set(TR_USER_AGENT_PREFIX "''${TR_SEMVER}")' 'set(TR_USER_AGENT_PREFIX "3.00")'
-    '';
-  });
-in
-{
-  sane.persist.sys.byStore.plaintext = [
-    # TODO: mode? we need this specifically for the stats tracking in .config/
-    { user = "transmission"; group = config.users.users.transmission.group; path = "/var/lib/transmission"; method = "bind"; }
-  ];
-  users.users.transmission.extraGroups = [ "media" ];
-
-  services.transmission.enable = true;
-  services.transmission.package = package;
-  #v setting `group` this way doesn't tell transmission to `chown` the files it creates
-  #  it's a nixpkgs setting which just runs the transmission daemon as this group
-  services.transmission.group = "media";
-
-  # transmission will by default not allow the world to read its files.
-  services.transmission.downloadDirPermissions = "775";
-  services.transmission.extraFlags = [
-    # "--log-level=debug"
-  ];
-
-  services.transmission.settings = {
-    # DOCUMENTATION/options list: <https://github.com/transmission/transmission/blob/main/docs/Editing-Configuration-Files.md#options>
-
-    # message-level = 3;  #< enable for debug logging. 0-3, default is 2.
-    # 0.0.0.0 => allow rpc from any host: we gate it via firewall and auth requirement
-    rpc-bind-address = "0.0.0.0";
-    #rpc-host-whitelist = "bt.uninsane.org";
-    #rpc-whitelist = "*.*.*.*";
-    rpc-authentication-required = true;
-    rpc-username = "colin";
-    # salted pw. to regenerate, set this plaintext, run nixos-rebuild, and then find the salted pw in:
-    # /var/lib/transmission/.config/transmission-daemon/settings.json
-    rpc-password = "{503fc8928344f495efb8e1f955111ca5c862ce0656SzQnQ5";
-    rpc-whitelist-enabled = false;
-
-    # hopefully, make the downloads world-readable
-    # umask = 0;  #< default is 2: i.e. deny writes from world
-
-    # force peer connections to be encrypted
-    encryption = 2;
-
-    # units in kBps
-    speed-limit-down = 12000;
-    speed-limit-down-enabled = true;
-    speed-limit-up = 800;
-    speed-limit-up-enabled = true;
-
-    # see: https://git.zknt.org/mirror/transmission/commit/cfce6e2e3a9b9d31a9dafedd0bdc8bf2cdb6e876?lang=bg-BG
-    anti-brute-force-enabled = false;
-
-    download-dir = "/var/media";
-    incomplete-dir = "/var/media/incomplete";
-    # transmission regularly fails to move stuff from the incomplete dir to the main one, so disable:
-    # TODO: uncomment this line!
-    incomplete-dir-enabled = false;
-  };
-
-  systemd.services.transmission.after = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.transmission.partOf = [ "wireguard-wg-ovpns.service" ];
-  systemd.services.transmission.serviceConfig = {
-    # run this behind the OVPN static VPN
-    NetworkNamespacePath = "/run/netns/ovpns";
-    Restart = "on-failure";
-    RestartSec = "30s";
-  };
-
-  # service to automatically backup torrents i add to transmission
-  systemd.services.backup-torrents = {
-    description = "archive torrents to storage not owned by transmission";
-    script = ''
-      ${pkgs.rsync}/bin/rsync -arv /var/lib/transmission/.config/transmission-daemon/torrents/ /var/backup/torrents/
-    '';
-  };
-  systemd.timers.backup-torrents = {
-    wantedBy = [ "multi-user.target" ];
-    timerConfig = {
-      OnStartupSec = "11min";
-      OnUnitActiveSec = "240min";
-    };
-  };
-
-  # transmission web client
-  services.nginx.virtualHosts."bt.uninsane.org" = {
-    # basicAuth is literally cleartext user/pw, so FORCE this to happen over SSL
-    forceSSL = true;
-    enableACME = true;
-    # inherit kTLS;
-    locations."/" = {
-      # proxyPass = "http://ovpns.uninsane.org:9091";
-      proxyPass = "http://10.0.1.6:9091";
-    };
-  };
-
-  sane.dns.zones."uninsane.org".inet.CNAME."bt" = "native";
-  sane.ports.ports."51413" = {
-    protocol = [ "tcp" "udp" ];
-    visibleTo.ovpn = true;
-    description = "colin-bittorrent";
-  };
-}
-

hosts/by-name/servo/services/trust-dns.nix

@@ -1,210 +0,0 @@
-# TODO: split this file apart into smaller files to make it easier to understand
-{ config, lib, pkgs, ... }:
-
-let
-  nativeAddrs = lib.mapAttrs (_name: builtins.head) config.sane.dns.zones."uninsane.org".inet.A;
-  bindOvpn = "10.0.1.5";
-in lib.mkMerge [
-{
-  services.trust-dns.enable = true;
-
-  # don't bind to IPv6 until i explicitly test that stack
-  services.trust-dns.settings.listen_addrs_ipv6 = [];
-  services.trust-dns.quiet = true;
-  # FIXME(2023/11/26): services.trust-dns.debug doesn't log requests: use RUST_LOG=debug env for that.
-  # - see: <https://github.com/hickory-dns/hickory-dns/issues/2082>
-  # services.trust-dns.debug = true;
-
-  sane.ports.ports."53" = {
-    protocol = [ "udp" "tcp" ];
-    visibleTo.lan = true;
-    visibleTo.wan = true;
-    visibleTo.ovpn = true;
-    description = "colin-dns-hosting";
-  };
-
-  sane.dns.zones."uninsane.org".TTL = 900;
-
-  # SOA record structure: <https://en.wikipedia.org/wiki/SOA_record#Structure>
-  # SOA MNAME RNAME (... rest)
-  # MNAME = Master name server for this zone. this is where update requests should be sent.
-  # RNAME = admin contact (encoded email address)
-  # Serial = YYYYMMDDNN, where N is incremented every time this file changes, to trigger secondary NS to re-fetch it.
-  # Refresh = how frequently secondary NS should query master
-  # Retry = how long secondary NS should wait until re-querying master after a failure (must be < Refresh)
-  # Expire = how long secondary NS should continue to reply to queries after master fails (> Refresh + Retry)
-  sane.dns.zones."uninsane.org".inet = {
-    SOA."@" = ''
-      ns1.uninsane.org. admin-dns.uninsane.org. (
-                                      2023092101 ; Serial
-                                      4h         ; Refresh
-                                      30m        ; Retry
-                                      7d         ; Expire
-                                      5m)        ; Negative response TTL
-    '';
-    TXT."rev" = "2023092101";
-
-    CNAME."native" = "%CNAMENATIVE%";
-    A."@" =      "%ANATIVE%";
-    A."servo.wan" = "%AWAN%";
-    A."servo.lan" = config.sane.hosts.by-name."servo".lan-ip;
-    A."servo.hn" = config.sane.hosts.by-name."servo".wg-home.ip;
-
-    # XXX NS records must also not be CNAME
-    # it's best that we keep this identical, or a superset of, what org. lists as our NS.
-    # so, org. can specify ns2/ns3 as being to the VPN, with no mention of ns1. we provide ns1 here.
-    A."ns1" =    "%ANATIVE%";
-    A."ns2" =    "185.157.162.178";
-    A."ns3" =    "185.157.162.178";
-    A."ovpns" =  "185.157.162.178";
-    NS."@" = [
-      "ns1.uninsane.org."
-      "ns2.uninsane.org."
-      "ns3.uninsane.org."
-    ];
-  };
-
-  services.trust-dns.settings.zones = [ "uninsane.org" ];
-
-  # TODO: can i transform this into some sort of service group?
-  # have `systemctl restart trust-dns.service` restart all the individual services?
-  systemd.services.trust-dns.serviceConfig = {
-    DynamicUser = lib.mkForce false;
-    User = "trust-dns";
-    Group = "trust-dns";
-    wantedBy = lib.mkForce [];
-  };
-  systemd.services.trust-dns.enable = false;
-
-  users.groups.trust-dns = {};
-  users.users.trust-dns = {
-    group = "trust-dns";
-    isSystemUser = true;
-  };
-
-  # sane.services.dyn-dns.restartOnChange = [ "trust-dns.service" ];
-
-  networking.nat.enable = true;
-  networking.nat.extraCommands = ''
-    # redirect incoming DNS requests from LAN addresses
-    #   to the LAN-specialized DNS service
-    # N.B.: use the `nixos-*` chains instead of e.g. PREROUTING
-    #   because they get cleanly reset across activations or `systemctl restart firewall`
-    #   instead of accumulating cruft
-    iptables -t nat -A nixos-nat-pre -p udp --dport 53 \
-      -m iprange --src-range 10.78.76.0-10.78.79.255 \
-      -j DNAT --to-destination :1053
-    iptables -t nat -A nixos-nat-pre -p tcp --dport 53 \
-      -m iprange --src-range 10.78.76.0-10.78.79.255 \
-      -j DNAT --to-destination :1053
-  '';
-  sane.ports.ports."1053" = {
-    # because the NAT above redirects in nixos-nat-pre, LAN requests behave as though they arrived on the external interface at the redirected port.
-    # TODO: try nixos-nat-post instead?
-    # TODO: or, don't NAT from port 53 -> port 1053, but rather nat from LAN addr to a loopback addr.
-    # - this is complicated in that loopback is a different interface than eth0, so rewriting the destination address would cause the packets to just be dropped by the interface
-    protocol = [ "udp" "tcp" ];
-    visibleTo.lan = true;
-    description = "colin-redirected-dns-for-lan-namespace";
-  };
-}
-{
-  systemd.services =
-    let
-      sed = "${pkgs.gnused}/bin/sed";
-      stateDir = "/var/lib/trust-dns";
-      zoneTemplate = pkgs.writeText "uninsane.org.zone.in" config.sane.dns.zones."uninsane.org".rendered;
-
-      zoneDirFor = flavor: "${stateDir}/${flavor}";
-      zoneFor = flavor: "${zoneDirFor flavor}/uninsane.org.zone";
-      mkTrustDnsService = opts: flavor: let
-        flags = let baseCfg = config.services.trust-dns; in
-          (lib.optional baseCfg.debug "--debug") ++ (lib.optional baseCfg.quiet "--quiet");
-        flagsStr = builtins.concatStringsSep " " flags;
-
-        anative = nativeAddrs."servo.${flavor}";
-
-        toml = pkgs.formats.toml { };
-        configTemplate = opts.config or (toml.generate "trust-dns-${flavor}.toml" (
-          (
-            lib.filterAttrsRecursive (_: v: v != null) config.services.trust-dns.settings
-          ) // {
-            listen_addrs_ipv4 = opts.listen or [ anative ];
-          }
-        ));
-        configFile = "${stateDir}/${flavor}-config.toml";
-
-        port = opts.port or 53;
-      in {
-        description = "trust-dns Domain Name Server (serving ${flavor})";
-        unitConfig.Documentation = "https://trust-dns.org/";
-
-        preStart = ''
-          wan=$(cat '${config.sane.services.dyn-dns.ipPath}')
-          ${sed} s/%AWAN%/$wan/ ${configTemplate} > ${configFile}
-        '' + lib.optionalString (!opts ? config) ''
-          mkdir -p ${zoneDirFor flavor}
-          ${sed} \
-            -e s/%CNAMENATIVE%/servo.${flavor}/ \
-            -e s/%ANATIVE%/${anative}/ \
-            -e s/%AWAN%/$wan/ \
-            -e s/%AOVPNS%/185.157.162.178/ \
-            ${zoneTemplate} > ${zoneFor flavor}
-        '';
-        serviceConfig = config.systemd.services.trust-dns.serviceConfig // {
-          ExecStart = ''
-            ${pkgs.trust-dns}/bin/${pkgs.trust-dns.meta.mainProgram} \
-            --port ${builtins.toString port} \
-            --zonedir ${zoneDirFor flavor}/ \
-            --config ${configFile} ${flagsStr}
-          '';
-        };
-
-        after = [ "network.target" ];
-        wantedBy = [ "multi-user.target" ];
-      };
-    in {
-      trust-dns-wan = mkTrustDnsService { listen = [ nativeAddrs."servo.lan" bindOvpn ]; } "wan";
-      trust-dns-lan = mkTrustDnsService { port = 1053; } "lan";
-      trust-dns-hn = mkTrustDnsService { port = 1053; } "hn";
-      trust-dns-hn-resolver = mkTrustDnsService {
-        config = pkgs.writeText "hn-resolver-config.toml" ''
-          # i host a resolver in the wireguard VPN so that clients can resolve DNS through the VPN.
-          # (that's what this file achieves).
-          #
-          # one would expect this resolver could host the authoritative zone for `uninsane.org`, and then forward everything else to the system resolver...
-          # and while that works for `dig`, it breaks for `nslookup` (and so `ssh`, etc).
-          #
-          # DNS responses include a flag for if the responding server is the authority of the zone queried.
-          # it seems that default Linux stub resolvers either:
-          # - expect DNSSEC when the response includes that bit, or
-          # - expect A records to be in the `answer` section instead of `additional` section.
-          # or perhaps something more nuanced. but for `nslookup` to be reliable, it has to talk to an
-          # instance of trust-dns which is strictly a resolver, with no authority.
-          # hence, this config: a resolver which forwards to the actual authority.
-
-          listen_addrs_ipv4 = ["${nativeAddrs."servo.hn"}"]
-          listen_addrs_ipv6 = []
-
-          [[zones]]
-          zone = "uninsane.org"
-          zone_type = "Forward"
-          stores = { type = "forward", name_servers = [{ socket_addr = "${nativeAddrs."servo.hn"}:1053", protocol = "udp", trust_nx_responses = true }] }
-
-          [[zones]]
-          # forward the root zone to the local DNS resolver
-          zone = "."
-          zone_type = "Forward"
-          stores = { type = "forward", name_servers = [{ socket_addr = "127.0.0.53:53", protocol = "udp", trust_nx_responses = true }] }
-        '';
-      } "hn-resolver";
-    };
-
-  sane.services.dyn-dns.restartOnChange = [
-    "trust-dns-wan.service"
-    "trust-dns-lan.service"
-    "trust-dns-hn.service"
-    # "trust-dns-hn-resolver.service"  # doesn't need restart because it doesn't know about WAN IP
-  ];
-}
-]

hosts/by-name/servo/services/wikipedia.nix

@@ -1,30 +0,0 @@
-# docs: <https://nixos.wiki/wiki/MediaWiki>
-{ config, lib, ... }:
-
-# XXX: working to host wikipedia with kiwix instead of mediawiki
-# mediawiki does more than i need and isn't obviously superior in any way
-# except that the dumps are more frequent/up-to-date.
-lib.mkIf false
-{
-  sops.secrets."mediawiki_pw" = {
-    owner = config.users.users.mediawiki.name;
-  };
-
-  services.mediawiki.enable = true;
-  services.mediawiki.name = "Uninsane Wiki";
-  services.mediawiki.passwordFile = config.sops.secrets.mediawiki_pw.path;
-  services.mediawiki.extraConfig = ''
-    # Disable anonymous editing
-    $wgGroupPermissions['*']['edit'] = false;
-  '';
-  services.mediawiki.virtualHost.listen = [
-    {
-      ip = "127.0.0.1";
-      port = 8013;
-      ssl = false;
-    }
-  ];
-  services.mediawiki.virtualHost.hostName = "w.uninsane.org";
-  services.mediawiki.virtualHost.adminAddr = "admin+mediawiki@uninsane.org";
-  # services.mediawiki.extensions = TODO: wikipedia sync extension?
-}

hosts/common/default.nix

@@ -1,50 +0,0 @@
-{ config, lib, pkgs, ... }:
-{
-  imports = [
-    ./feeds.nix
-    ./fs.nix
-    ./hardware
-    ./home
-    ./hosts.nix
-    ./ids.nix
-    ./machine-id.nix
-    ./net
-    ./nix
-    ./persist.nix
-    ./polyunfill.nix
-    ./programs
-    ./secrets.nix
-    ./ssh.nix
-    ./systemd.nix
-    ./users
-  ];
-
-  sane.nixcache.enable-trusted-keys = true;
-  sane.nixcache.enable = lib.mkDefault true;
-  sane.persist.enable = lib.mkDefault true;
-  sane.root-on-tmpfs = lib.mkDefault true;
-  sane.programs.sysadminUtils.enableFor.system = lib.mkDefault true;
-  sane.programs.consoleUtils.enableFor.user.colin = lib.mkDefault true;
-
-  nixpkgs.config.allowUnfree = true;  # NIXPKGS_ALLOW_UNFREE=1
-  nixpkgs.config.allowBroken = true;  # NIXPKGS_ALLOW_BROKEN=1
-
-  # time.timeZone = "America/Los_Angeles";
-  time.timeZone = "Etc/UTC";  # DST is too confusing for me => use a stable timezone
-
-  system.activationScripts.nixClosureDiff = {
-    supportsDryActivation = true;
-    text = ''
-      # show which packages changed versions or are new/removed in this upgrade
-      # source: <https://github.com/luishfonseca/dotfiles/blob/32c10e775d9ec7cc55e44592a060c1c9aadf113e/modules/upgrade-diff.nix>
-      # modified to not error on boot (when /run/current-system doesn't exist)
-      if [ -d /run/current-system ]; then
-        ${pkgs.nvd}/bin/nvd --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"
-      fi
-    '';
-  };
-
-  # link debug symbols into /run/current-system/sw/lib/debug
-  # hopefully picked up by gdb automatically?
-  environment.enableDebugInfo = true;
-}

hosts/common/feeds.nix

@@ -1,246 +0,0 @@
-# where to find good stuff?
-# - universal search/directory: <https://podcastindex.org>
-# - podcasts w/ a community: <https://lemmyverse.net/communities?query=podcast>
-# - podcast rec thread: <https://lemmy.ml/post/1565858>
-#
-# candidates:
-# - The Nonlinear Library (podcast): <https://forum.effectivealtruism.org/posts/JTZTBienqWEAjGDRv/listen-to-more-ea-content-with-the-nonlinear-library>
-#   - has ~10 posts per day, text-to-speech; i would need better tagging before adding this
-# - <https://www.metaculus.com/questions/11102/introducing-the-metaculus-journal-podcast/>
-#   - dead since 2022/10 - 2023/03
-
-{ lib, sane-data, ... }:
-let
-  hourly = { freq = "hourly"; };
-  daily = { freq = "daily"; };
-  weekly = { freq = "weekly"; };
-  infrequent = { freq = "infrequent"; };
-
-  art = { cat = "art"; };
-  humor = { cat = "humor"; };
-  pol = { cat = "pol"; };  # or maybe just "social"
-  rat = { cat = "rat"; };
-  tech = { cat = "tech"; };
-  uncat = { cat = "uncat"; };
-
-  text = { format = "text"; };
-  img = { format = "image"; };
-
-  mkRss = format: url: { inherit url format; } // uncat // infrequent;
-  # format-specific helpers
-  mkText = mkRss "text";
-  mkImg = mkRss "image";
-  mkPod = mkRss "podcast";
-
-  # host-specific helpers
-  mkSubstack = subdomain: { substack = subdomain; };
-
-  fromDb = name:
-    let
-      raw = sane-data.feeds."${name}";
-    in {
-      url = raw.url;
-      # not sure the exact mapping with velocity here: entries per day?
-      freq = lib.mkIf (raw.velocity or 0 != 0) (lib.mkDefault (
-        if raw.velocity > 2 then
-          "hourly"
-        else if raw.velocity > 0.5 then
-          "daily"
-        else if raw.velocity > 0.1 then
-          "weekly"
-        else
-          "infrequent"
-      ));
-    } // lib.optionalAttrs (lib.hasPrefix "https://www.youtube.com/" raw.url) {
-      format = "video";
-    } // lib.optionalAttrs (raw.is_podcast or false) {
-      format = "podcast";
-    } // lib.optionalAttrs (raw.title or "" != "") {
-      title = lib.mkDefault raw.title;
-    };
-
-  podcasts = [
-    (fromDb "acquiredlpbonussecretsecret.libsyn.com" // tech)  # ACQ2 - more "Acquired" episodes
-    (fromDb "allinchamathjason.libsyn.com" // pol)
-    (fromDb "anchor.fm/s/34c7232c/podcast/rss" // tech)  # Civboot -- https://anchor.fm/civboot
-    (fromDb "anchor.fm/s/2da69154/podcast/rss" // tech)  # POD OF JAKE -- https://podofjake.com/
-    (fromDb "cast.postmarketos.org" // tech)
-    (fromDb "congressionaldish.libsyn.com" // pol)  # Jennifer Briney
-    (fromDb "craphound.com" // pol)  # Cory Doctorow -- both podcast & text entries
-    (fromDb "darknetdiaries.com" // tech)
-    (fromDb "feed.podbean.com/matrixlive/feed.xml" // tech)  # Matrix (chat) Live
-    (fromDb "feeds.99percentinvisible.org/99percentinvisible" // pol)  # 99% Invisible -- also available here: <https://feeds.simplecast.com/BqbsxVfO>
-    (fromDb "feeds.feedburner.com/80000HoursPodcast" // rat)
-    (fromDb "feeds.feedburner.com/dancarlin/history" // rat)
-    (fromDb "feeds.feedburner.com/radiolab" // pol)  # Radiolab -- also available here, but ONLY OVER HTTP: <http://feeds.wnyc.org/radiolab>
-    (fromDb "feeds.megaphone.fm/behindthebastards" // pol)  # also Maggie Killjoy
-    (fromDb "feeds.megaphone.fm/recodedecode" // tech)  # The Verge - Decoder
-    (fromDb "feeds.simplecast.com/54nAGcIl" // pol)  # The Daily
-    (fromDb "feeds.simplecast.com/82FI35Px" // pol)  # Ezra Klein Show
-    (fromDb "feeds.simplecast.com/wgl4xEgL" // rat)  # Econ Talk
-    (fromDb "feeds.simplecast.com/xKJ93w_w" // uncat)  # Atlas Obscura
-    (fromDb "feeds.transistor.fm/acquired" // tech)
-    (fromDb "fulltimenix.com" // tech)
-    (fromDb "lexfridman.com/podcast" // rat)
-    (fromDb "mapspodcast.libsyn.com" // uncat)  # Multidisciplinary Association for Psychedelic Studies
-    (fromDb "omegataupodcast.net" // tech)  # 3/4 German; 1/4 eps are English
-    (fromDb "omny.fm/shows/cool-people-who-did-cool-stuff" // pol)  # Maggie Killjoy -- referenced by Cory Doctorow
-    (fromDb "omny.fm/shows/the-dollop-with-dave-anthony-and-gareth-reynolds")  # The Dollop history/comedy
-    (fromDb "originstories.libsyn.com" // uncat)
-    (fromDb "podcast.posttv.com/itunes/post-reports.xml" // pol)
-    (fromDb "politicalorphanage.libsyn.com" // pol)
-    (fromDb "reverseengineering.libsyn.com/rss" // tech)  # UnNamed Reverse Engineering Podcast
-    (fromDb "rss.acast.com/deconstructed")  # The Intercept - Deconstructed
-    (fromDb "rss.acast.com/ft-tech-tonic" // tech)
-    (fromDb "rss.acast.com/intercepted-with-jeremy-scahill")  # The Intercept - Intercepted
-    (fromDb "rss.art19.com/60-minutes" // pol)
-    (fromDb "rss.art19.com/the-portal" // rat)  # Eric Weinstein
-    (fromDb "seattlenice.buzzsprout.com" // pol)
-    (fromDb "srslywrong.com" // pol)
-    (fromDb "sharkbytes.transistor.fm" // tech)  # Wireshark Podcast o_0
-    (fromDb "sscpodcast.libsyn.com" // rat)  # Astral Codex Ten
-    (fromDb "talesfromthebridge.buzzsprout.com" // tech)  # Sci-Fi? has Peter Watts; author of No Moods, Ads or Cutesy Fucking Icons (rifters.com)
-    (fromDb "techwontsave.us" // pol)  # rec by Cory Doctorow
-    (fromDb "wakingup.libsyn.com" // pol)  # Sam Harris
-    (fromDb "werenotwrong.fireside.fm" // pol)
-
-    # (fromDb "feeds.libsyn.com/421877" // rat)  # Less Wrong Curated
-    # (fromDb "feeds.megaphone.fm/hubermanlab" // uncat)  # Daniel Huberman on sleep
-    # (fromDb "feeds.simplecast.com/l2i9YnTd" // tech // pol)  # Hard Fork (NYtimes tech)
-    # (fromDb "podcast.thelinuxexp.com" // tech)  # low-brow linux/foss PR announcements
-    # (fromDb "rss.art19.com/your-welcome" // pol)  # Michael Malice - Your Welcome -- also available here: <https://origin.podcastone.com/podcast?categoryID2=2232>
-    # (fromDb "rss.prod.firstlook.media/deconstructed/podcast.rss" // pol)  #< possible URL rot
-    # (fromDb "rss.prod.firstlook.media/intercepted/podcast.rss" // pol)  #< possible URL rot
-    # (fromDb "trashfuturepodcast.podbean.com" // pol)  # rec by Cory Doctorow, but way rambly
-    # (mkPod "https://anchor.fm/s/21bc734/podcast/rss" // pol // infrequent)  # Emerge: making sense of what's next -- <https://www.whatisemerging.com/emergepodcast>
-    # (mkPod "https://audioboom.com/channels/5097784.rss" // tech)  # Lateral with Tom Scott
-    # (mkPod "https://feeds.megaphone.fm/RUNMED9919162779" // pol // infrequent)  # The Witch Trials of J.K. Rowling: <https://www.thefp.com/witchtrials>
-    # (mkPod "https://podcasts.la.utexas.edu/this-is-democracy/feed/podcast/" // pol // weekly)
-  ];
-
-  texts = [
-    (fromDb "acoup.blog/feed")  # history, states. author: <https://historians.social/@bretdevereaux/following>
-    (fromDb "amosbbatto.wordpress.com" // tech)
-    (fromDb "anish.lakhwara.com" // tech)
-    (fromDb "applieddivinitystudies.com" // rat)
-    (fromDb "artemis.sh" // tech)
-    (fromDb "ascii.textfiles.com" // tech)  # Jason Scott
-    (fromDb "austinvernon.site" // tech)
-    # (fromDb "balajis.com" // pol)  # Balaji
-    (fromDb "ben-evans.com/benedictevans" // pol)
-    (fromDb "bitbashing.io" // tech)
-    (fromDb "bitsaboutmoney.com" // uncat)
-    (fromDb "blog.danieljanus.pl" // tech)
-    (fromDb "blog.dshr.org" // pol)  # David Rosenthal
-    (fromDb "blog.jmp.chat" // tech)
-    (fromDb "blog.rust-lang.org" // tech)
-    (fromDb "blog.thalheim.io" // tech)  # Mic92
-    (fromDb "bunniestudios.com" // tech)  # Bunnie Juang
-    (fromDb "capitolhillseattle.com" // pol)
-    # (fromDb "drewdevault.com" // tech)
-    # (fromDb "econlib.org" // pol)
-    (fromDb "edwardsnowden.substack.com" // pol // text)
-    (fromDb "fasterthanli.me" // tech)
-    (fromDb "gwern.net" // rat)
-    (fromDb "harihareswara.net" // tech // pol)  # rec by Cory Doctorow
-    (fromDb "ianthehenry.com" // tech)
-    (fromDb "idiomdrottning.org" // uncat)
-    (fromDb "interconnected.org/home/feed" // rat)  # Matt Webb -- engineering-ish, but dreamy
-    (fromDb "jeffgeerling.com" // tech)
-    (fromDb "jefftk.com" // tech)
-    (fromDb "kill-the-newsletter.com/feeds/joh91bv7am2pnznv.xml" // pol)  # Matt Levine - Money Stuff
-    (fromDb "kosmosghost.github.io/index.xml" // tech)
-    # (fromDb "lesswrong.com" // rat)
-    (fromDb "linmob.net" // tech)
-    (fromDb "lwn.net" // tech)
-    (fromDb "lynalden.com" // pol)
-    (fromDb "mako.cc/copyrighteous" // tech // pol)  # rec by Cory Doctorow
-    (fromDb "mg.lol" // tech)
-    (fromDb "mindingourway.com" // rat)
-    (fromDb "morningbrew.com/feed" // pol)
-    (fromDb "overcomingbias.com" // rat)  # Robin Hanson
-    (fromDb "palladiummag.com" // uncat)
-    (fromDb "philosopher.coach" // rat)  # Peter Saint-Andre -- side project of stpeter.im
-    (fromDb "pomeroyb.com" // tech)
-    (fromDb "postmarketos.org/blog" // tech)
-    (fromDb "preposterousuniverse.com" // rat)  # Sean Carroll
-    (fromDb "profectusmag.com" // uncat)
-    (fromDb "project-insanity.org" // tech)  # shared blog by a few NixOS devs, notably onny
-    (fromDb "putanumonit.com" // rat)  # mostly dating topics. not advice, or humor, but looking through a social lens
-    (fromDb "richardcarrier.info" // rat)
-    (fromDb "rifters.com/crawl" // uncat)  # No Moods, Ads or Cutesy Fucking Icons
-    (fromDb "righto.com" // tech)  # Ken Shirriff
-    (fromDb "rootsofprogress.org" // rat)  # Jason Crawford
-    (fromDb "sagacioussuricata.com" // tech)  # ian (Sanctuary)
-    (fromDb "semiaccurate.com" // tech)
-    (fromDb "sideways-view.com" // rat)  # Paul Christiano
-    (fromDb "slatecave.net" // tech)
-    (fromDb "slimemoldtimemold.com" // rat)
-    (fromDb "spectrum.ieee.org" // tech)
-    (fromDb "stpeter.im/atom.xml" // pol)
-    (fromDb "thediff.co" // pol)  # Byrne Hobart
-    # (fromDb "theregister.com" // tech)
-    (fromDb "thisweek.gnome.org" // tech)
-    (fromDb "tuxphones.com" // tech)
-    (fromDb "uninsane.org" // tech)
-    (fromDb "unintendedconsequenc.es" // rat)
-    # (fromDb "vitalik.ca" // tech)  # moved to vitalik.eth.limo
-    (fromDb "vitalik.eth.limo" // tech)  # Vitalik Buterin
-    # (fromDb "webcurious.co.uk" // uncat)  # link aggregator; defunct?
-    (fromDb "xn--gckvb8fzb.com" // tech)
-    (mkSubstack "astralcodexten" // rat // daily)  # Scott Alexander
-    # (mkSubstack "doomberg" // tech // weekly)  # articles are all pay-walled
-    (mkSubstack "eliqian" // rat // weekly)
-    (mkSubstack "oversharing" // pol // daily)
-    (mkSubstack "samkriss" // humor // infrequent)
-    (mkText "http://benjaminrosshoffman.com/feed" // pol // weekly)
-    (mkText "http://boginjr.com/feed" // tech // infrequent)
-    (mkText "https://forum.merveilles.town/rss.xml" // pol // infrequent)  #quality RSS list here: <https://forum.merveilles.town/thread/57/share-your-rss-feeds%21-6/>
-    # (mkText "https://github.com/Kaiteki-Fedi/Kaiteki/commits/master.atom" // tech // infrequent)
-    (mkText "https://jvns.ca/atom.xml" // tech // weekly)  # Julia Evans
-    (mkText "https://linuxphoneapps.org/blog/atom.xml" // tech // infrequent)
-    (mkText "https://nixos.org/blog/announcements-rss.xml" // tech // infrequent)  # more nixos stuff here, but unclear how to subscribe: <https://nixos.org/blog/categories.html>
-    (mkText "https://nixos.org/blog/stories-rss.xml" // tech // weekly)
-    # (mkText "https://til.simonwillison.net/tils/feed.atom" // tech // weekly)
-    # (mkText "https://www.bloomberg.com/opinion/authors/ARbTQlRLRjE/matthew-s-levine.rss" // pol // weekly)  # Matt Levine (preview/paywalled)
-    (mkText "https://www.stratechery.com/rss" // pol // weekly)  # Ben Thompson
-  ];
-
-  videos = [
-    (fromDb "youtube.com/@Channel5YouTube" // pol)
-    (fromDb "youtube.com/@ColdFusion")
-    (fromDb "youtube.com/@ContraPoints" // pol)
-    (fromDb "youtube.com/@Exurb1a")
-    (fromDb "youtube.com/@hbomberguy")
-    (fromDb "youtube.com/@JackStauber")
-    (fromDb "youtube.com/@NativLang")
-    (fromDb "youtube.com/@PolyMatter")
-    # (fromDb "youtube.com/@rossmanngroup" // pol // tech)  # Louis Rossmann
-    (fromDb "youtube.com/@TechnologyConnections" // tech)
-    (fromDb "youtube.com/@TheB1M")
-    (fromDb "youtube.com/@TomScottGo")
-    (fromDb "youtube.com/@Vihart")
-    (fromDb "youtube.com/@Vox")
-    (fromDb "youtube.com/@Vsauce")
-  ];
-
-  images = [
-    (fromDb "catandgirl.com" // img // humor)
-    (fromDb "miniature-calendar.com" // img // art // daily)
-    (fromDb "pbfcomics.com" // img // humor)
-    (fromDb "poorlydrawnlines.com/feed" // img // humor)
-    (fromDb "smbc-comics.com" // img // humor)
-    (fromDb "turnoff.us" // img // humor)
-    (fromDb "xkcd.com" // img // humor)
-  ];
-in
-{
-  sane.feeds = texts ++ images ++ podcasts ++ videos;
-
-  assertions = builtins.map
-    (p: {
-      assertion = p.format or "unknown" == "podcast";
-      message = ''${p.url} is not a podcast: ${p.format or "unknown"}'';
-    })
-    podcasts;
-}

hosts/common/fs.nix

@@ -1,176 +0,0 @@
-# docs
-# - x-systemd options: <https://www.freedesktop.org/software/systemd/man/systemd.mount.html>
-# - fuse options: `man mount.fuse`
-
-{ lib, pkgs, sane-lib, ... }:
-
-let
-  fsOpts = rec {
-    common = [
-      "_netdev"
-      "noatime"
-      # user: allow any user with access to the device to mount the fs.
-      #       note that this requires a suid `mount` binary; see: <https://zameermanji.com/blog/2022/8/5/using-fuse-without-root-on-linux/>
-      "user"
-      "x-systemd.requires=network-online.target"
-      "x-systemd.after=network-online.target"
-      "x-systemd.mount-timeout=10s"  # how long to wait for mount **and** how long to wait for unmount
-    ];
-    # x-systemd.automount: mount the fs automatically *on first access*.
-    # creates a `path-to-mount.automount` systemd unit.
-    automount = [ "x-systemd.automount" ];
-    # noauto: don't mount as part of remote-fs.target.
-    # N.B.: `remote-fs.target` is a dependency of multi-user.target, itself of graphical.target.
-    # hence, omitting `noauto` can slow down boots.
-    noauto = [ "noauto" ];
-    # lazyMount: defer mounting until first access from userspace
-    lazyMount = noauto ++ automount;
-    wg = [
-      "x-systemd.requires=wireguard-wg-home.service"
-      "x-systemd.after=wireguard-wg-home.service"
-    ];
-
-    ssh = common ++ [
-      "identityfile=/home/colin/.ssh/id_ed25519"
-      "allow_other"  # allow users other than the one who mounts it to access it. needed, if systemd is the one mounting this fs (as root)
-      # allow_root: allow root to access files on this fs (if mounted by non-root, else it can always access them).
-      #             N.B.: if both allow_root and allow_other are specified, then only allow_root takes effect.
-      # "allow_root"
-      # default_permissions: enforce local permissions check. CRUCIAL if using `allow_other`.
-      # w/o this, permissions mode of sshfs is like:
-      # - sshfs runs all remote commands as the remote user.
-      # - if a local user has local permissions to the sshfs mount, then their file ops are sent blindly across the tunnel.
-      # - `allow_other` allows *any* local user to access the mount, and hence any local user can now freely become the remote mapped user.
-      # with default_permissions, sshfs doesn't tunnel file ops from users until checking that said user could perform said op on an equivalent local fs.
-      "default_permissions"
-    ];
-    sshColin = ssh ++ [
-      # follow_symlinks: remote files which are symlinks are presented to the local system as ordinary files (as the target of the symlink).
-      #                  if the symlink target does not exist, the presentation is unspecified.
-      #                  symlinks which point outside the mount ARE followed. so this is more capable than `transform_symlinks`
-      "follow_symlinks"
-      # symlinks on the remote fs which are absolute paths are presented to the local system as relative symlinks pointing to the expected data on the remote fs.
-      # only symlinks which would point inside the mountpoint are translated.
-      "transform_symlinks"
-      "idmap=user"
-      "uid=1000"
-      "gid=100"
-    ];
-    # sshRoot = ssh ++ [
-    #   # we don't transform_symlinks because that breaks the validity of remote /nix stores
-    #   "sftp_server=/run/wrappers/bin/sudo\\040/run/current-system/sw/libexec/sftp-server"
-    # ];
-    # in the event of hunt NFS mounts, consider:
-    # - <https://unix.stackexchange.com/questions/31979/stop-broken-nfs-mounts-from-locking-a-directory>
-
-    # NFS options: <https://linux.die.net/man/5/nfs>
-    # actimeo=n  = how long (in seconds) to cache file/dir attributes (default: 3-60s)
-    # bg         = retry failed mounts in the background
-    # retry=n    = for how many minutes `mount` will retry NFS mount operation
-    # soft       = on "major timeout", report I/O error to userspace
-    # retrans=n  = how many times to retry a NFS request before giving userspace a "server not responding" error (default: 3)
-    # timeo=n    = number of *deciseconds* to wait for a response before retrying it (default: 600)
-    #              note: client uses a linear backup, so the second request will have double this timeout, then triple, etc.
-    nfs = common ++ [
-      # "actimeo=10"
-      "bg"
-      "retrans=4"
-      "retry=0"
-      "soft"
-      "timeo=15"
-      "nofail"  # don't fail remote-fs.target when this mount fails  (not an option for sshfs else would be common)
-    ];
-  };
-  remoteHome = host: {
-    fileSystems."/mnt/${host}/home" = {
-      device = "colin@${host}:/home/colin";
-      fsType = "fuse.sshfs";
-      options = fsOpts.sshColin ++ fsOpts.lazyMount;
-      noCheck = true;
-    };
-    sane.fs."/mnt/${host}/home" = sane-lib.fs.wanted {
-      dir.acl.user = "colin";
-      dir.acl.group = "users";
-      dir.acl.mode = "0700";
-    };
-  };
-in
-lib.mkMerge [
-  {
-    # some services which use private directories error if the parent (/var/lib/private) isn't 700.
-    sane.fs."/var/lib/private".dir.acl.mode = "0700";
-
-    # in-memory compressed RAM
-    # defaults to compressing at most 50% size of RAM
-    # claimed compression ratio is about 2:1
-    # - but on moby w/ zstd default i see 4-7:1  (ratio lowers as it fills)
-    # note that idle overhead is about 0.05% of capacity (e.g. 2B per 4kB page)
-    # docs: <https://www.kernel.org/doc/Documentation/blockdev/zram.txt>
-    #
-    # to query effectiveness:
-    # `cat /sys/block/zram0/mm_stat`. whitespace separated fields:
-    # - *orig_data_size*  (bytes)
-    # - *compr_data_size* (bytes)
-    # - mem_used_total    (bytes)
-    # - mem_limit         (bytes)
-    # - mem_used_max      (bytes)
-    # - *same_pages*  (pages which are e.g. all zeros (consumes no additional mem))
-    # - *pages_compacted*  (pages which have been freed thanks to compression)
-    # - huge_pages  (incompressible)
-    #
-    # see also:
-    # - `man zramctl`
-    zramSwap.enable = true;
-    # how much ram can be swapped into the zram device.
-    # this shouldn't be higher than the observed compression ratio.
-    # the default is 50% (why?)
-    # 100% should be "guaranteed" safe so long as the data is even *slightly* compressible.
-    # but it decreases working memory under the heaviest of loads by however much space the compressed memory occupies (e.g. 50% if 2:1; 25% if 4:1)
-    zramSwap.memoryPercent = 100;
-
-    # fileSystems."/mnt/servo-nfs" = {
-    #   device = "servo-hn:/";
-    #   noCheck = true;
-    #   fsType = "nfs";
-    #   options = fsOpts.nfs ++ fsOpts.automount ++ fsOpts.wg;
-    # };
-    fileSystems."/mnt/servo/media" = {
-      device = "servo-hn:/media";
-      noCheck = true;
-      fsType = "nfs";
-      options = fsOpts.nfs ++ fsOpts.lazyMount ++ fsOpts.wg;
-    };
-    sane.fs."/mnt/servo/media" = sane-lib.fs.wanted {
-      dir.acl.user = "colin";
-      dir.acl.group = "users";
-      dir.acl.mode = "0750";
-    };
-    fileSystems."/mnt/servo/playground" = {
-      device = "servo-hn:/playground";
-      noCheck = true;
-      fsType = "nfs";
-      options = fsOpts.nfs ++ fsOpts.lazyMount ++ fsOpts.wg;
-    };
-    sane.fs."/mnt/servo/playground" = sane-lib.fs.wanted {
-      dir.acl.user = "colin";
-      dir.acl.group = "users";
-      dir.acl.mode = "0750";
-    };
-
-    # environment.pathsToLink = [
-    #   # needed to achieve superuser access for user-mounted filesystems (see sshRoot above)
-    #   # we can only link whole directories here, even though we're only interested in pkgs.openssh
-    #   "/libexec"
-    # ];
-
-    programs.fuse.userAllowOther = true;  #< necessary for `allow_other` or `allow_root` options.
-    environment.systemPackages = [
-      pkgs.sshfs-fuse
-    ];
-  }
-
-  (remoteHome "desko")
-  (remoteHome "lappy")
-  (remoteHome "moby")
-]
-

hosts/common/hardware/default.nix

@@ -1,91 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./x86_64.nix
-  ];
-
-  boot.initrd.supportedFilesystems = [ "ext4" "btrfs" "ext2" "ext3" "vfat" ];
-  # useful emergency utils
-  boot.initrd.extraUtilsCommands = ''
-    copy_bin_and_libs ${pkgs.btrfs-progs}/bin/btrfstune
-    copy_bin_and_libs ${pkgs.util-linux}/bin/{cfdisk,lsblk,lscpu}
-    copy_bin_and_libs ${pkgs.gptfdisk}/bin/{cgdisk,gdisk}
-    copy_bin_and_libs ${pkgs.smartmontools}/bin/smartctl
-    copy_bin_and_libs ${pkgs.e2fsprogs}/bin/resize2fs
-  '' + lib.optionalString pkgs.stdenv.hostPlatform.isx86_64 ''
-    copy_bin_and_libs ${pkgs.nvme-cli}/bin/nvme  # doesn't cross compile
-  '';
-  boot.kernelParams = [
-    "boot.shell_on_fail"
-    #v experimental full pre-emption for hopefully better call/audio latency on moby.
-    # also toggleable at runtime via /sys/kernel/debug/sched/preempt
-    # defaults to preempt=voluntary
-    # "preempt=full"
-  ];
-  # other kernelParams:
-  #   "boot.trace"
-  #   "systemd.log_level=debug"
-  #   "systemd.log_target=console"
-
-  # moby has to run recent kernels (defined elsewhere).
-  # meanwhile, kernel variation plays some minor role in things like sandboxing (landlock) and capabilities.
-  # simpler to keep near the latest kernel on all devices,
-  # and also makes certain that any weird system-level bugs i see aren't likely to be stale kernel bugs.
-  # servo needs zfs though, which doesn't support every kernel.
-  boot.kernelPackages = lib.mkDefault pkgs.zfs.latestCompatibleLinuxPackages;
-
-  # hack in the `boot.shell_on_fail` arg since that doesn't always seem to work.
-  boot.initrd.preFailCommands = "allowShell=1";
-
-  # default: 4 (warn). 7 is debug
-  boot.consoleLogLevel = 7;
-
-  boot.loader.grub.enable = lib.mkDefault false;
-  boot.loader.generic-extlinux-compatible.enable = lib.mkDefault true;
-
-  # non-free firmware
-  hardware.enableRedistributableFirmware = true;
-
-  # default is 252274, which is too low particularly for servo.
-  # manifests as spurious "No space left on device" when trying to install watches,
-  # e.g. in dyn-dns by `systemctl start dyn-dns-watcher.path`.
-  # see: <https://askubuntu.com/questions/828779/failed-to-add-run-systemd-ask-password-to-directory-watch-no-space-left-on-dev>
-  boot.kernel.sysctl."fs.inotify.max_user_watches" = 1048576;
-
-  # powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
-  powerManagement.powertop.enable = false;
-  # linux CPU governor: <https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt>
-  # - options:
-  #   - "powersave" => force CPU to always run at lowest supported frequency
-  #   - "performance" => force CPU to always run at highest frequency
-  #   - "ondemand" => adjust frequency based on load
-  #   - "conservative"  (ondemand but slower to adjust)
-  #   - "schedutil"
-  #   - "userspace"
-  # - not all options are available for all platforms
-  #   - intel (intel_pstate) appears to manage scaling w/o intervention/control from the OS.
-  #   - AMD (acpi-cpufreq) appears to manage scaling via the OS *or* HW. but the ondemand defaults never put it to max hardware frequency.
-  #   - qualcomm (cpufreq-dt) appears to manage scaling *only* via the OS. ondemand governor exercises the full range.
-  # - query details with `sudo cpupower frequency-info`
-  powerManagement.cpuFreqGovernor = "ondemand";
-
-  services.logind.extraConfig = ''
-    # see: `man logind.conf`
-    # don’t shutdown when power button is short-pressed (commonly done an accident, or by cats).
-    #   but do on long-press: useful to gracefully power-off server.
-    HandlePowerKey=lock
-    HandlePowerKeyLongPress=poweroff
-    HandleLidSwitch=lock
-  '';
-
-  # services.snapper.configs = {
-  #   root = {
-  #     subvolume = "/";
-  #     extraConfig = {
-  #       ALLOW_USERS = "colin";
-  #     };
-  #   };
-  # };
-  # services.snapper.snapshotInterval = "daily";
-}

hosts/common/hardware/x86_64.nix

@@ -1,15 +0,0 @@
-{ lib, pkgs, ... }:
-
-{
-  config = lib.mkIf (pkgs.system == "x86_64-linux") {
-    boot.initrd.availableKernelModules = [
-      "xhci_pci" "ahci" "sd_mod" "sdhci_pci"  # nixos-generate-config defaults
-      "usb_storage"   # rpi needed this to boot from usb storage, i think.
-      "nvme"  # to boot from nvme devices
-      # efi_pstore evivars
-    ];
-
-    hardware.cpu.amd.updateMicrocode = true;    # desktop
-    hardware.cpu.intel.updateMicrocode = true;  # laptop
-  };
-}

hosts/common/home/default.nix

@@ -1,9 +0,0 @@
-{ ... }:
-{
-  imports = [
-    ./fs.nix
-    ./mime.nix
-    ./ssh.nix
-    ./xdg-dirs.nix
-  ];
-}

hosts/common/home/fs.nix

@@ -1,45 +0,0 @@
-{ config, lib, ... }:
-{
-  sane.user.persist.byStore.plaintext = [
-    "archive"
-    "dev"
-    # TODO: records should be private
-    "records"
-    "ref"
-    "tmp"
-    "use"
-    "Books/local"
-    "Music"
-    "Pictures/albums"
-    "Pictures/cat"
-    "Pictures/from"
-    "Pictures/Screenshots"  #< XXX: something is case-sensitive about this?
-    "Pictures/Photos"
-    "Videos/local"
-
-    # these are persisted simply to save on RAM.
-    # ~/.cache/nix can become several GB.
-    # mesa_shader_cache is < 10 MB.
-    # TODO: integrate with sane.programs.sandbox?
-    ".cache/mesa_shader_cache"
-    ".cache/nix"
-  ];
-  sane.user.persist.byStore.private = [
-    "knowledge"
-  ];
-
-  # convenience
-  sane.user.fs = let
-    persistEnabled = config.sane.persist.enable;
-  in {
-    ".persist/private" = lib.mkIf persistEnabled { symlink.target = config.sane.persist.stores.private.origin; };
-    ".persist/plaintext" = lib.mkIf persistEnabled { symlink.target = config.sane.persist.stores.plaintext.origin; };
-    ".persist/ephemeral" = lib.mkIf persistEnabled { symlink.target = config.sane.persist.stores.cryptClearOnBoot.origin; };
-
-    "nixos".symlink.target = "dev/nixos";
-
-    "Books/servo".symlink.target = "/mnt/servo/media/Books";
-    "Videos/servo".symlink.target = "/mnt/servo/media/Videos";
-    "Pictures/servo-macros".symlink.target = "/mnt/servo/media/Pictures/macros";
-  };
-}

hosts/common/home/mime.nix

@@ -1,94 +0,0 @@
-# TODO: move into modules/users.nix
-{ config, lib, pkgs, ...}:
-
-let
-  # [ ProgramConfig ]
-  enabledPrograms = builtins.filter
-    (p: p.enabled)
-    (builtins.attrValues config.sane.programs);
-
-  # [ ProgramConfig ]
-  enabledProgramsWithPackage = builtins.filter (p: p.package != null) enabledPrograms;
-
-  # [ { "<mime-type>" = { prority, desktop } ]
-  enabledWeightedMimes = builtins.map weightedMimes enabledPrograms;
-
-  # ProgramConfig -> { "<mime-type>" = { priority, desktop }; }
-  weightedMimes = prog: builtins.mapAttrs
-    (_key: desktop: {
-      priority = prog.mime.priority; desktop = desktop;
-    })
-    prog.mime.associations;
-
-  # [ { "<mime-type>" = { priority, desktop } ]; } ] -> { "<mime-type>" = [ { priority, desktop } ... ]; }
-  mergeMimes = mimes: lib.foldAttrs (item: acc: [item] ++ acc) [] mimes;
-
-  # [ { priority, desktop } ... ] -> Self
-  sortOneMimeType = associations: builtins.sort
-    (l: r: lib.throwIf
-      (l.priority == r.priority)
-      "${l.desktop} and ${r.desktop} share a preferred mime type with identical priority ${builtins.toString l.priority} (and so the desired association is ambiguous)"
-      (l.priority < r.priority)
-    )
-    associations;
-  sortMimes = mimes: builtins.mapAttrs (_k: sortOneMimeType) mimes;
-  # { "<mime-type>"} = [ { priority, desktop } ... ]; } -> { "<mime-type>" = [ "<desktop>" ... ]; }
-  removePriorities = mimes: builtins.mapAttrs
-    (_k: associations: builtins.map (a: a.desktop) associations)
-    mimes;
-  # { "<mime-type>" = [ "<desktop>" ... ]; } -> { "<mime-type>" = "<desktop1>;<desktop2>;..."; }
-  formatDesktopLists = mimes: builtins.mapAttrs
-    (_k: desktops: lib.concatStringsSep ";" desktops)
-    mimes;
-
-  mimeappsListPkg = pkgs.writeTextDir "share/applications/mimeapps.list" (
-    lib.generators.toINI { } {
-      "Default Applications" = formatDesktopLists (removePriorities (sortMimes (mergeMimes enabledWeightedMimes)));
-    }
-  );
-
-  localShareApplicationsPkg = (pkgs.symlinkJoin {
-    name = "user-local-share-applications";
-    paths = builtins.map
-      (p: "${p.package}")
-      (enabledProgramsWithPackage ++ [ { package=mimeappsListPkg; } ]);
-  }).overrideAttrs (orig: {
-    # like normal symlinkJoin, but don't error if the path doesn't exist
-    buildCommand = ''
-      mkdir -p $out/share/applications
-      for i in $(cat $pathsPath); do
-        if [ -e "$i/share/applications" ]; then
-          ${pkgs.buildPackages.xorg.lndir}/bin/lndir -silent $i/share/applications $out/share/applications
-        fi
-      done
-      runHook postBuild
-    '';
-    postBuild = ''
-      # rebuild `mimeinfo.cache`, used by file openers to show the list of *all* apps, not just the user's defaults.
-      ${pkgs.buildPackages.desktop-file-utils}/bin/update-desktop-database $out/share/applications
-    '';
-  });
-
-in
-{
-  # the xdg mime type for a file can be found with:
-  # - `xdg-mime query filetype path/to/thing.ext`
-  # the default handler for a mime type can be found with:
-  # - `xdg-mime query default <mimetype>`  (e.g. x-scheme-handler/http)
-  # the nix-configured handler can be found `nix-repl > :lf . > hostConfigs.desko.xdg.mime.defaultApplications`
-  #
-  # glib/gio is queried via glib.bin output:
-  # - `gio mime x-scheme-handler/https`
-  # - `gio open <path_or_url>`
-  # - `gio launch </path/to/app.desktop>`
-  #
-  # we can have single associations or a list of associations.
-  # there's also options to *remove* [non-default] associations from specific apps
-  # N.B.: don't use nixos' `xdg.mime` option becaue that caues `/share/applications` to be linked into the whole system,
-  # which limits what i can do around sandboxing. getting the default associations to live in ~/ makes it easier to expose
-  # the associations to apps selectively.
-  # xdg.mime.enable = true;
-  # xdg.mime.defaultApplications = removePriorities (sortMimes (mergeMimes enabledWeightedMimes));
-
-  sane.user.fs.".local/share/applications".symlink.target = "${localShareApplicationsPkg}/share/applications";
-}

hosts/common/home/ssh.nix

@@ -1,29 +0,0 @@
-# TODO: this should be moved to users/colin.nix
-{ config, lib, ... }:
-
-let
-  host = config.networking.hostName;
-  user-pubkey-full = config.sane.ssh.pubkeys."colin@${host}" or {};
-  user-pubkey = user-pubkey-full.asUserKey or null;
-  host-keys = lib.filter (k: k.user == "root") (lib.attrValues config.sane.ssh.pubkeys);
-  known-hosts-text = lib.concatStringsSep
-    "\n"
-    (builtins.map (k: k.asHostKey) host-keys)
-  ;
-in
-{
-  # ssh key is stored in private storage
-  sane.user.persist.byStore.private = [
-    { type = "file"; path = ".ssh/id_ed25519"; }
-  ];
-  sane.user.fs.".ssh/id_ed25519.pub" = lib.mkIf (user-pubkey != null) {
-    symlink.text = user-pubkey;
-  };
-  sane.user.fs.".ssh/known_hosts".symlink.text = known-hosts-text;
-
-  users.users.colin.openssh.authorizedKeys.keys =
-  let
-    user-keys = lib.filter (k: k.user == "colin") (lib.attrValues config.sane.ssh.pubkeys);
-  in
-    builtins.map (k: k.asUserKey) user-keys;
-}

hosts/common/home/xdg-dirs.nix

@@ -1,20 +0,0 @@
-{ ... }:
-
-{
-  # XDG defines things like ~/Desktop, ~/Downloads, etc.
-  # these clutter the home, so i mostly don't use them.
-  sane.user.fs.".config/user-dirs.dirs".symlink.text = ''
-    XDG_DESKTOP_DIR="$HOME/.xdg/Desktop"
-    XDG_DOCUMENTS_DIR="$HOME/dev"
-    XDG_DOWNLOAD_DIR="$HOME/tmp"
-    XDG_MUSIC_DIR="$HOME/Music"
-    XDG_PICTURES_DIR="$HOME/Pictures"
-    XDG_PUBLICSHARE_DIR="$HOME/.xdg/Public"
-    XDG_TEMPLATES_DIR="$HOME/.xdg/Templates"
-    XDG_VIDEOS_DIR="$HOME/Videos"
-  '';
-
-  # prevent `xdg-user-dirs-update` from overriding/updating our config
-  # see <https://manpages.ubuntu.com/manpages/bionic/man5/user-dirs.conf.5.html>
-  sane.user.fs.".config/user-dirs.conf".symlink.text = "enabled=False";
-}