s6-rc: fix service run file to have expected format

this should make it easier to switch to a different service manager

.sops.yaml

@@ -3,7 +3,6 @@ keys:
   - &user_lappy_colin age1j2pqnl8j0krdzk6npe93s4nnqrzwx978qrc0u570gzlamqpnje9sc8le2g
   - &user_servo_colin age1z8fauff34cdecr6sjkre260luzxcca05kpcwvhx988d306tpcejsp63znu
   - &user_moby_colin age1zsrsvd7j6l62fjxpfd2qnhqlk8wk4p8r0dtxpe4sdgnh2474095qdu7xj9
-  - &host_crappy age1hl50ufuxnqy0jnk8fqeu4tclh4vte2xn2d59pxff0gun20vsmv5sp78chj
   - &host_desko age1vnw7lnfpdpjn62l3u5nyv5xt2c965k96p98kc43mcnyzpetrts9q54mc9v
   - &host_lappy age1w7mectcjku6x3sd8plm8wkn2qfrhv9n6zhzlf329e2r2uycgke8qkf9dyn
   - &host_servo age1tzlyex2z6t88tg9h82943e39shxhmqeyr7ywhlwpdjmyqsndv3qq27x0rf
@@ -16,7 +15,6 @@ creation_rules:
       - *user_lappy_colin
       - *user_servo_colin
       - *user_moby_colin
-      - *host_crappy
       - *host_desko
       - *host_lappy
       - *host_servo

README.md

@@ -2,8 +2,6 @@
 
 # .❄️≡We|_c0m3 7o m`/ f14k≡❄️.
 
-(er, it's not a flake anymore. welcome to my nix files.)
-
 ## What's Here
 
 this is the top-level repo from which i configure/deploy all my NixOS machines:
@@ -18,12 +16,13 @@ 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/](./modules/users/default.nix)
+  - [modules/users.nix](./modules/users.nix)
 
 [nixpkgs]: https://github.com/NixOS/nixpkgs
 [sops]: https://github.com/Mic92/sops-nix
@@ -31,7 +30,11 @@ you might specifically be interested in these files (elaborated further in #key-
 
 ## Using This Repo In Your Own Config
 
-follow the instructions [here][NUR] to access my packages through the Nix User Repositories.
+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/
 
@@ -39,15 +42,19 @@ follow the instructions [here][NUR] to access my packages through the Nix User R
 - `doc/`
   - instructions for tasks i find myself doing semi-occasionally in this repo.
 - `hosts/`
-  - configs which aren't factored with external use in mind.
+  - 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).
+  - 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 for anything besides packages, it's most likely for something in this directory.
+  - 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.
@@ -55,12 +62,13 @@ follow the instructions [here][NUR] to access my packages through the Nix User R
   - 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.
+  - 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.
+  - 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.
 
@@ -101,10 +109,9 @@ i.e. you might find value in using these in your own config:
     - `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/`
+- `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"`
-  - per-user services managed by [s6-rc](https://www.skarnet.org/software/s6-rc/)
 
 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.

TODO.md

@@ -1,34 +1,9 @@
 ## BUGS
-- `rmDbusServices` may break sandboxing
-  - e.g. if the package ships a systemd unit which references $out, then make-sandboxed won't properly update that unit.
-  - `rmDbusServicesInPlace` is not affected
-- when moby wlan is explicitly set down (via ip link set wlan0 down), /var/lib/trust-dns/dhcp-configs doesn't get reset
-  - `ip monitor` can detect those manual link state changes (NM-dispatcher it seems cannot)
-  - or try dnsmasq?
-- trust-dns: can't recursively resolve api.mangadex.org
-  - and *sometimes* apple.com fails
-- sandbox: link cache means that if i update ~/.config/... files inline, sandboxed programs still see the old version
-- mpv: audiocast has mpv sending its output to the builtin speakers unless manually changed
-- mpv: no way to exit fullscreen video on moby
-  - uosc hides controls on FS, and touch doesn't support unhiding
-- Signal restart loop drains battery
-  - decrease s6 restart time?
-- `ssh` access doesn't grant same linux capabilities as login
 - ringer (i.e. dino incoming call) doesn't prevent moby from sleeping
-- sysvol (volume overlay): when casting with `blast`, sysvol doesn't react to volume changes
-- moby: kaslr is effectively disabled
-  - `dmesg | grep "KASLR disabled due to lack of seed"`
-  - fix by adding `kaslrseed` to uboot script before `booti`
-    - <https://github.com/armbian/build/pull/4352>
-    - not sure how that's supposed to work with tow-boot; maybe i should just update tow-boot
-- moby: bpf is effectively disabled?
-  - `dmesg | grep 'systemd[1]: bpf-lsm: Failed to load BPF object: No such process'`
-  - `dmesg | grep 'hid_bpf: error while preloading HID BPF dispatcher: -22'`
-- `s6` is not re-entrant
-  - so if the desktop crashes, the login process from `unl0kr` fails to re-launch the GUI
+- `nix` operations from lappy hang when `desko` is unreachable
+  - could at least direct the cache to `http://desko-hn:5001`
 
 ## REFACTORING:
-- add import checks to my Python nix-shell scripts
 - consolidate ~/dev and ~/ref
   - ~/dev becomes a link to ~/ref/cat/mine
 - fold hosts/common/home/ssh.nix -> hosts/common/users/colin.nix
@@ -45,19 +20,13 @@
 
 ### 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:
-- systemd/journalctl: use a less shit pager
-  - there's an env var for it: SYSTEMD_PAGER? and a flag for journalctl
-- kernels: ship the same kernel on every machine
-  - then i can tune the kernels for hardening, without duplicating that work 4 times
-- zfs: replace this with something which doesn't require a custom kernel build
-- mpv: add media looping controls (e.g. loop song, loop playlist)
-
 ### security/resilience
 - validate duplicity backups!
 - encrypt more ~ dirs (~/archives, ~/records, ..?)
@@ -75,25 +44,22 @@
     - <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 sanebox to a compiled language (hare?)
+  - 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.
-  - flatpak/spectrum has some stuff to proxy dconf per-app
 - canaries for important services
   - e.g. daily email checks; daily backup checks
   - integrate `nix check` into Gitea actions?
 
 ### user experience
-- rofi: sort items case-insensitively
 - xdg-desktop-portal shouldn't kill children on exit
   - *maybe* a job for `setsid -f`?
 - replace starship prompt with something more efficient
   - watch `forkstat`: it does way too much
-- cleanup waybar/nwg-panel so that it's not invoking playerctl every 2 seconds
-  - nwg-panel: swaync icon is stuck as the refresh icon
-  - nwg-panel: doesn't appear on all desktops
-  - nwg-panel: doesn't know that virtual-desktop 10/TV exists
+- 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/>
@@ -101,9 +67,8 @@
   - 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)?
+  - 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/>
-    - Folio is nice, uses standard markdown, though it only supports flat repos
   - OSK overlay specifically for mobile gaming
     - i.e. mock joysticks, for use with SuperTux and SuperTuxKart
 - install mobile-friendly games:
@@ -114,8 +79,6 @@
   - 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
-  - Trivia Quiz (https://linuxphoneapps.org/games/io.github.nokse22.trivia-quiz/)
-- sane-sync-music: remove empty dirs
 
 #### moby
 - fix cpuidle (gets better power consumption): <https://xnux.eu/log/077.html>
@@ -131,7 +94,6 @@
   - 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: port `freshen-agps` timer service to s6 (maybe i want some `s6-cron` or something)
 - moby: show battery state on ssh login
 - moby: improve gPodder launch time
 - moby: theme GTK apps (i.e. non-adwaita styles)
@@ -160,10 +122,6 @@
 
 ### perf
 - debug nixos-rebuild times
-  - use `systemctl list-jobs` to show what's being waited on
-  - i think it's `systemd-networkd-wait-online.service` that's blocking this?
-    - i wonder what interface it's waiting for. i should use `--ignore=...` to ignore interfaces i don't care about.
-  - also `wireguard-wg-home.target` when net is offline
 - 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!

default.nix

@@ -3,65 +3,7 @@
 #
 # the primary purpose of this file is so i can run `updateScript`s which expect
 # the root to be `default.nix`
-{ }:
-let
-  mkPkgs = args: (import ./pkgs/additional/nixpkgs args).extend
-    (import ./overlays/all.nix);
-  inherit (mkPkgs {}) lib;
-
-  evalHost = { name, system, branch ? "master", variant ? null }:
-  let
-    pkgs = mkPkgs { inherit system; variant = branch; };
-  in pkgs.nixos (
-    [
-      (lib.optionalAttrs (variant == "light") {
-        sane.maxBuildCost = 2;
-      })
-      (lib.optionalAttrs (variant == "min") {
-        sane.maxBuildCost = 0;
-      })
-      (import ./hosts/instantiate.nix { hostName = name; })
-      (import ./modules)
-      pkgs.sops-nix.nixosModules.sops
-    ]
-  );
-  mkFlavoredHost = args: let
-    host = evalHost args;
-    # expose the toplevel nixos system as the toplevel attribute itself,
-    # with nested aliases for other common build targets
-  in host.config.system.build.toplevel.overrideAttrs (base: {
-    passthru = (base.passthru or {}) // {
-      config = host.config;
-      fs = host.config.sane.fs;
-      img = host.config.system.build.img;
-      pkgs = host.config.system.build.pkgs;
-      programs = lib.mapAttrs (_: p: p.package) host.config.sane.programs;
-      toplevel = host.config.system.build.toplevel;  #< self
-    };
-  });
-  mkHost = args: {
-    # TODO: swap order: $host-{next,staging}-{min,light}:
-    # then lexicographically-adjacent targets would also have the minimal difference in closure,
-    # and the order in which each target should be built is more evident
-    "${args.name}" = mkFlavoredHost args;
-    "${args.name}-next" = mkFlavoredHost args // { branch = "staging-next"; };
-    "${args.name}-staging" = mkFlavoredHost args // { branch = "staging"; };
-    "${args.name}-light" = mkFlavoredHost args // { variant = "light"; };
-    "${args.name}-light-next" = mkFlavoredHost args // { variant = "light"; branch = "staging-next"; };
-    "${args.name}-light-staging" = mkFlavoredHost args // { variant = "light"; branch = "staging"; };
-    "${args.name}-min" = mkFlavoredHost args // { variant = "min"; };
-    "${args.name}-min-next" = mkFlavoredHost args // { variant = "min"; branch = "staging-next"; };
-    "${args.name}-min-staging" = mkFlavoredHost args // { variant = "min"; branch = "staging-staging"; };
-  };
-
-  hosts = lib.foldl' (acc: host: acc // (mkHost host)) {} [
-    { name = "crappy"; system = "armv7l-linux";  }
-    { name = "desko";  system = "x86_64-linux";  }
-    { name = "lappy";  system = "x86_64-linux";  }
-    { name = "moby";   system = "aarch64-linux"; }
-    { name = "rescue"; system = "x86_64-linux";  }
-    { name = "servo";  system = "x86_64-linux";  }
-  ];
-in {
-  inherit hosts;
-} // (mkPkgs {})
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.appendOverlays [
+  (import ./overlays/all.nix)
+]

doc/adding-a-host.md

@@ -1,25 +0,0 @@
-to add a host:
-- create the new nix targets
-  - hosts/by-name/HOST
-  - let the toplevel (flake.nix) know about HOST
-- build and flash an image
-- optionally expand the rootfs
-  - `cfdisk /dev/sda2` -> resize partition
-  - `mount /dev/sda2 boot`
-  - `btrfs filesystem resize max root`
-- setup required persistent directories
-  - `mkdir -p root/persist/private`
-  - `gocryptfs -init root/persist/private`
-  - then boot the device, and for every dangling symlink in ~/.local/share, ~/.cache, do `mkdir -p` on it
-- setup host ssh
-  - `mkdir -p root/persist/plaintext/etc/ssh/host_keys`
-  - boot the machine and let it create its own ssh keys
-  - add the pubkey to `hosts/common/hosts.nix`
-- setup user ssh
-  - `ssh-keygen`. don't enter any password; it's stored in a password-encrypted fs.
-  - add the pubkey to `hosts/common/hosts.nix`
-- allow the new host to view secrets
-  - instructions in hosts/common/secrets.nix
-  - run `ssh-to-age` on user/host pubkeys
-  - add age key to .sops.yaml
-  - update encrypted secrets: `sops updatekeys path/to/secret.yaml`

doc/recovery.md

@@ -1,12 +0,0 @@
-## deploying to SD card
-- build a toplevel config: `nix build '.#hostSystems.moby'`
-- mount a system:
-  - `mkdir -p root/{nix,boot}`
-  - `mount /dev/sdX1 root/boot`
-  - `mount /dev/sdX2 root/nix`
-- copy the config:
-  - `sudo nix copy --no-check-sigs --to root/ $(readlink result)`
-    - nix will copy stuff to `root/nix/store`
-- install the boot files:
-  - `sudo /nix/store/sbwpwngjlgw4f736ay9hgi69pj3fdwk5-extlinux-conf-builder.sh -d ./root/boot -t 5 -c $(readlink ./result)`
-    - extlinux-conf-builder can be found in `/run/current-system/bin/switch-to-configuration`

flake.lock

@@ -0,0 +1,330 @@
+{
+  "nodes": {
+    "flake-compat": {
+      "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-wayland",
+          "nix-eval-jobs",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1701473968,
+        "narHash": "sha256-YcVE5emp1qQ8ieHUnxt1wCZCC3ZfAS+SRRWZ2TMda7E=",
+        "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",
+        "rev": "45b75bf534592c0c1c881a1c447f7fdb37a87eaf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "lib-aggregate",
+        "type": "github"
+      }
+    },
+    "mobile-nixos": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1694749521,
+        "narHash": "sha256-MiVokKlpcJmfoGuWAMeW1En7gZ5hk0rCQArYm6P9XCc=",
+        "owner": "nixos",
+        "repo": "mobile-nixos",
+        "rev": "d25d3b87e7f300d8066e31d792337d9cd7ecd23b",
+        "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,
+        "narHash": "sha256-SQmng1EnBFLzS7WSRyPM9HgmZP2kLJcPAz+Ug/nug6o=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d6863cbcbbb80e71cecfc03356db1cda38919523",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1710031547,
+        "narHash": "sha256-pkUg3hOKuGWMGF9WEMPPN/G4pqqdbNGJQ54yhyQYDVY=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "630ebdc047ca96d8126e16bb664c7730dc52f6e6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "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": {
+        "mobile-nixos": "mobile-nixos",
+        "nixpkgs-next-unpatched": "nixpkgs-next-unpatched",
+        "nixpkgs-unpatched": "nixpkgs-unpatched",
+        "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"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,644 @@
+# FLAKE FEEDBACK:
+# - if flake inputs are meant to be human-readable, a human should be able to easily track them down given the URL.
+#   - this is not the case with registry URLs, like `nixpkgs/nixos-22.11`.
+#   - 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:
+    # - daily:
+    #   - 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>
+      # 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 = {
+      # <https://github.com/Mic92/sops-nix>
+      # used to distribute secrets to my hosts
+      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";
+    };
+  };
+
+  outputs = {
+    self,
+    nixpkgs-unpatched,
+    nixpkgs-next-unpatched ? nixpkgs-unpatched,
+    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.${attr}) (attrNames set));
+      optionalAttrs = cond: attrs: if cond then attrs else {};
+      # mapAttrs but without the `name` argument
+      mapAttrValues = f: mapAttrs (_: f);
+
+      # rather than apply our nixpkgs patches as a flake input, do that here instead.
+      # this (temporarily?) resolves the bad UX wherein a subflake residing in the same git
+      # repo as the main flake causes the main flake to have an unstable hash.
+      patchNixpkgs = variant: nixpkgs: (import ./nixpatches/flake.nix).outputs {
+        inherit variant nixpkgs;
+        self = patchNixpkgs variant nixpkgs;
+      };
+
+      nixpkgs' = patchNixpkgs "master" nixpkgs-unpatched;
+      nixpkgsCompiledBy = system: nixpkgs'.legacyPackages."${system}";
+
+      evalHost = { name, local, target, light ? false, nixpkgs ? nixpkgs' }: nixpkgs.lib.nixosSystem {
+        system = target;
+        modules = [
+          {
+            nixpkgs.buildPlatform.system = local;
+            # nixpkgs.config.replaceStdenv = { pkgs }: pkgs.ccacheStdenv;
+          }
+          (optionalAttrs (local != target) {
+            # 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;
+          })
+          (optionalAttrs light {
+            sane.enableSlowPrograms = false;
+          })
+          (import ./hosts/instantiate.nix { hostName = name; })
+          self.nixosModules.default
+          self.nixosModules.passthru
+          {
+            nixpkgs.overlays = [
+              self.overlays.passthru
+              self.overlays.sane-all
+            ];
+          }
+        ];
+      };
+    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";
+        };
+      };
+    };
+}
+

hosts/by-name/crappy/default.nix

@@ -1,44 +0,0 @@
-# Samsung chromebook XE303C12
-# - <https://wiki.postmarketos.org/wiki/Samsung_Chromebook_(google-snow)>
-{ ... }:
-{
-  imports = [
-    ./fs.nix
-  ];
-
-  sane.hal.samsung.enable = true;
-  sane.roles.client = true;
-  # sane.roles.pc = true;
-
-  users.users.colin.initialPassword = "147147";
-  sane.programs.sway.enableFor.user.colin = true;
-
-  sane.programs.calls.enableFor.user.colin = false;
-  sane.programs.consoleMediaUtils.enableFor.user.colin = true;
-  sane.programs.epiphany.enableFor.user.colin = true;
-  sane.programs."gnome.geary".enableFor.user.colin = false;
-  # sane.programs.firefox.enableFor.user.colin = true;
-  sane.programs.portfolio-filemanager.enableFor.user.colin = true;
-  sane.programs.signal-desktop.enableFor.user.colin = false;
-  sane.programs.wike.enableFor.user.colin = true;
-
-  sane.programs.dino.config.autostart = false;
-  sane.programs.dissent.config.autostart = false;
-  sane.programs.fractal.config.autostart = false;
-
-  # sane.programs.guiApps.enableFor.user.colin = false;
-
-  # sane.programs.pcGuiApps.enableFor.user.colin = false;  #< errors!
-
-  sane.programs.blueberry.enableFor.user.colin = false;  # bluetooth manager: doesn't cross compile!
-  # sane.programs.brave.enableFor.user.colin = false;  # 2024/06/03: fails eval if enabled on cross
-  # sane.programs.firefox.enableFor.user.colin = false;  # 2024/06/03: this triggers an eval error in yarn stuff -- i'm doing IFD somewhere!!?
-  sane.programs.mepo.enableFor.user.colin = false;  # 2024/06/04: doesn't cross compile (nodejs)
-  sane.programs.mercurial.enableFor.user.colin = false;  # 2024/06/03: does not cross compile
-  sane.programs.nixpkgs-review.enableFor.user.colin = false;  # 2024/06/03: OOMs when cross compiling
-  sane.programs.ntfy-sh.enableFor.user.colin = false;  # 2024/06/04: doesn't cross compile (nodejs)
-  sane.programs.pwvucontrol.enableFor.user.colin = false;  # 2024/06/03: doesn't cross compile (libspa-sys)
-  sane.programs."sane-scripts.bt-search".enableFor.user.colin = false;  # 2024/06/03: does not cross compile
-  sane.programs.sequoia.enableFor.user.colin = false;  # 2024/06/03: does not cross compile
-  sane.programs.zathura.enableFor.user.colin = false;  # 2024/06/03: does not cross compile
-}

hosts/by-name/crappy/fs.nix

@@ -1,16 +0,0 @@
-{ ... }:
-{
-  fileSystems."/nix" = {
-    device = "/dev/disk/by-uuid/55555555-0303-0c12-86df-eda9e9311526";
-    fsType = "btrfs";
-    options = [
-      "compress=zstd"
-      "defaults"
-    ];
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/303C-5A37";
-    fsType = "vfat";
-  };
-}

hosts/by-name/desko/default.nix

@@ -1,50 +1,52 @@
-{ config, lib, pkgs, ... }:
+{ config, pkgs, ... }:
 {
   imports = [
     ./fs.nix
   ];
 
-  sane.services.trust-dns.asSystemResolver = false;  # TEMPORARY: TODO: re-enable trust-dns
-  # sane.programs.devPkgs.enableFor.user.colin = true;
   # sane.guest.enable = true;
 
-  # don't enable wifi by default: it messes with connectivity.
-  # systemd.services.iwd.enable = false;
-  # systemd.services.wpa_supplicant.enable = false;
-  sane.programs.wpa_supplicant.enableFor.user.colin = lib.mkForce false;
-  sane.programs.wpa_supplicant.enableFor.system = lib.mkForce false;
+  # 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.ovpn.addrV4 = "172.26.55.21";
-  # sane.ovpn.addrV6 = "fd00:0000:1337:cafe:1111:1111:20c1:a73c";
   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;
 
-  sane.programs.nwg-panel.config = {
-    battery = false;
-    brightness = false;
-  };
-
+  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
@@ -56,4 +58,7 @@
     # 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/lappy/default.nix

@@ -9,17 +9,15 @@
   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.ovpn.addrV4 = "172.23.119.72";
-  # sane.ovpn.addrV6 = "fd00:0000:1337:cafe:1111:1111:0332:aa96/128";
 
   # sane.guest.enable = true;
+  boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
-  sane.programs.stepmania.enableFor.user.colin = true;
   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;
 
@@ -33,4 +31,7 @@
     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

@@ -0,0 +1,7 @@
+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

@@ -0,0 +1,12 @@
+{ 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

@@ -1,4 +1,7 @@
 # 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/>
@@ -9,17 +12,22 @@
 { config, pkgs, lib, ... }:
 {
   imports = [
+    ./bootloader.nix
     ./fs.nix
     ./gps.nix
+    ./kernel.nix
+    ./polyfill.nix
   ];
 
-  sane.hal.pine64.enable = true;
   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;
-  sane.ovpn.addrV4 = "172.24.87.255";
-  # sane.ovpn.addrV6 = "fd00:0000:1337:cafe:1111:1111:18cd:a72b";
+
+  # 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
@@ -28,7 +36,13 @@
 
   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
@@ -44,8 +58,22 @@
   # sane.programs."gnome.geary".config.autostart = true;
   # sane.programs.calls.config.autostart = true;
 
-  sane.programs.pipewire.config = {
-    # tune so Dino doesn't drop audio
+  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.
@@ -56,11 +84,67 @@
     # `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`
-    min-quantum = 2048;
-    max-quantum = 8192;
-  };
+    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/gps.nix

@@ -64,5 +64,6 @@
     "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

@@ -0,0 +1,91 @@
+{ 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

@@ -0,0 +1,45 @@
+# 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

@@ -4,6 +4,7 @@
     ./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
@@ -11,4 +12,7 @@
   # 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/servo/default.nix

@@ -15,21 +15,20 @@
   };
 
   sane.roles.build-machine.enable = true;
-  sane.programs.zsh.config.showDeadlines = false;  # ~/knowledge doesn't always exist
+  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.trust-dns.asSystemResolver = false;  # TODO: enable once it's all working well
   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.ovpn.addrV4 = "172.23.174.114";
-  # sane.ovpn.addrV6 = "fd00:0000:1337:cafe:1111:1111:8df3:14b0";
+  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
@@ -38,6 +37,7 @@
   # 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.
@@ -45,5 +45,13 @@
   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

@@ -8,7 +8,6 @@
 # - 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>
-# - 3. enable acl support: `zfs set acltype=posixacl pool`
 #
 # import pools: `zpool import pool`
 # show zfs datasets: `zfs list` (will be empty if haven't imported)
@@ -26,7 +25,6 @@
   # scrub all zfs pools weekly:
   services.zfs.autoScrub.enable = true;
   boot.extraModprobeConfig = ''
-    ### zfs_arc_max tunable:
     # 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>
@@ -35,13 +33,7 @@
     # 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`
-    ### zfs_bclone_enabled tunable
-    # this allows `cp --reflink=always FOO BAR` to work. i.e. shallow copies.
-    # it's unstable as of 2.2.3. led to *actual* corruption in 2.2.1, but hopefully better by now.
-    # - <https://github.com/openzfs/zfs/issues/405>
-    # note that `du -h` won't *always* show the reduced size for reflink'd files (?).
-    # `zpool get all | grep clone` seems to be the way to *actually* see how much data is being deduped
-    options zfs zfs_arc_max=4294967296 zfs_bclone_enabled=1
+    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.
@@ -51,7 +43,6 @@
   fileSystems."/mnt/pool" = {
     device = "pool";
     fsType = "zfs";
-    options = [ "acl" ];  #< not sure if this `acl` flag is actually necessary. it mounts without it.
   };
   # services.zfs.zed = ... # TODO: zfs can send me emails when disks fail
   sane.programs.sysadminUtils.suggestedPrograms = [ "zfs" ];
@@ -91,17 +82,12 @@
   };
   sane.fs."/mnt/usb-hdd".mount = {};
 
-  # FIRST TIME SETUP FOR MEDIA DIRECTORY:
-  # - set the group stick bit: `sudo find /var/media -type d -exec chmod g+s {} +`
-  #   - this ensures new files/dirs inherit the group of their parent dir (instead of the user who creates them)
-  # - ensure everything under /var/media is mounted with `-o acl`, to support acls
-  # - ensure all files are rwx by group: `setfacl --recursive --modify d:g::rwx /var/media`
-  #   - alternatively, `d:g:media:rwx` to grant `media` group even when file has a different owner, but that's a bit complex
-  sane.persist.sys.byStore.ext = [{
+  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 = "0775";
+    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)
@@ -115,7 +101,7 @@
   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/datasets".dir = {};
   sane.fs."/var/media/freeleech".dir = {};
   sane.fs."/var/media/Music".dir = {};
   sane.fs."/var/media/Pictures".dir = {};
@@ -130,6 +116,27 @@
     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 = [

hosts/by-name/servo/net.nix

@@ -38,39 +38,6 @@ in
     #   FallbackDNS=1.1.1.1 9.9.9.9
     # '';
 
-    # tun-sea config
-    sane.dns.zones."uninsane.org".inet.A."doof.tunnel" = "205.201.63.12";
-    sane.dns.zones."uninsane.org".inet.AAAA."doof.tunnel" = "2602:fce8:106::51";
-    networking.wireguard.interfaces.wg-doof = let
-      ip = "${pkgs.iproute2}/bin/ip";
-    in {
-      privateKeyFile = config.sops.secrets.wg_doof_privkey.path;
-      # wg is active only in this namespace.
-      # run e.g. ip netns exec doof <some command like ping/curl/etc, it'll go through wg>
-      #   sudo ip netns exec doof ping www.google.com
-      interfaceNamespace = "doof";
-      ips = [
-        "205.201.63.12/32"
-        "2602:fce8:106::51/128"
-      ];
-      peers = [
-        {
-          publicKey = "nuESyYEJ3YU0hTZZgAd7iHBz1ytWBVM5PjEL1VEoTkU=";
-          # TODO: configure DNS within the doof ns and use tun-sea.doof.net endpoint
-          # endpoint = "tun-sea.doof.net:53263";
-          endpoint = "205.201.63.44:53263";
-          allowedIPs = [ "0.0.0.0/0" "::/0" ];
-          persistentKeepalive = 25; #< keep the NAT alive
-        }
-      ];
-      preSetup = ''
-        ${ip} netns add doof || (test -e /run/netns/doof && echo "doof already exists")
-      '';
-      postShutdown = ''
-        ${ip} netns delete doof || echo "couldn't delete doof"
-      '';
-    };
-
     # 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`.
@@ -120,7 +87,7 @@ in
         }
       ];
       preSetup = ''
-        ${ip} netns add ovpns || (test -e /run/netns/ovpns && echo "ovpns already exists")
+        ${ip} netns add ovpns || echo "ovpns already exists"
       '';
       postShutdown = ''
         ${in-ns} ip link del ovpns-veth-b || echo "couldn't delete ovpns-veth-b"

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

@@ -24,7 +24,7 @@ lib.mkIf false
   # services.calibre-web.options.calibreLibrary = svc-dir;
 
   services.nginx.virtualHosts."calibre.uninsane.org" = {
-    forceSSL = true;
+    addSSL = true;
     enableACME = true;
     locations."/" = {
       proxyPass = "http://${ip}:${builtins.toString port}";

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

@@ -24,64 +24,50 @@
 #   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.
-# - there an old version which *half worked*, which is:
-#   - run the turn server in the root namespace.
-#   - bind the turn server to the veth connecting it to the VPN namespace (so it sends outgoing traffic to the right place).
-#   - NAT the turn port range from VPN into root namespace (so it receives incomming traffic).
-#   - this approach would fail the prosody conversations.im check, but i didn't notice *obvious* call routing errors.
-#
-# debugging:
-# - log messages like 'usage: realm=<turn.uninsane.org>, username=<1715915193>, rp=14, rb=1516, sp=8, sb=684'
-#   - rp = received packets
-#   - rb = received bytes
-#   - sp = sent packets
-#   - sb = sent bytes
 { lib, ... }:
 let
-  # TURN port range (inclusive).
-  # default coturn behavior is to use the upper quarter of all ports. i.e. 49152 - 65535.
-  # i believe TURN allocations expire after either 5 or 10 minutes of inactivity.
-  turnPortLow = 49152; # 49152 = 0xc000
-  turnPortHigh = turnPortLow + 256;
+  # 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
 {
-  # the port definitions are only needed if running in the root net namespace
-  # 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;  # forward traffic from the VPN to the root NS
-  #       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-${builtins.toString numPorts}";
-  #     };
-  #   })
-  #   turnPortRange
-  # ));
+  sane.ports.ports = lib.mkMerge ([
+    {
+      "3478" = {
+        # this is the "control" port.
+        # i.e. no client data is forwarded through it, but it's where clients request tunnels.
+        protocol = [ "tcp" "udp" ];
+        # visibleTo.lan = true;
+        # visibleTo.wan = true;
+        visibleTo.ovpn = true;
+        description = "colin-stun-turn";
+      };
+      "5349" = {
+        # the other port 3478 also supports TLS/DTLS, but presumably clients wanting TLS will default 5349
+        protocol = [ "tcp" ];
+        # visibleTo.lan = true;
+        # visibleTo.wan = true;
+        visibleTo.ovpn = true;
+        description = "colin-stun-turn-over-tls";
+      };
+    }
+  ] ++ (builtins.map
+    (port: {
+      "${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
@@ -117,28 +103,22 @@ in
   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";
-
-  #v disable to allow unauthenticated access (or set `services.coturn.no-auth = true`)
   services.coturn.use-auth-secret = true;
   services.coturn.static-auth-secret-file = "/var/lib/coturn/shared_secret.bin";
-  services.coturn.lt-cred-mech = true; #< XXX: use-auth-secret overrides lt-cred-mech
-
+  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"  (it's TOO MUCH verbosity really)
-    "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"  #< 2024/04/25: works, if running in root namespace
-    "listening-ip=185.157.162.178" "external-ip=185.157.162.178"
-
-    # old attempts:
+    # "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" (?)
   ];
-  systemd.services.coturn.serviceConfig.NetworkNamespacePath = "/run/netns/ovpns";
 }

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

@@ -1,22 +1,6 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i python3 -p "python3.withPackages (ps: [ ps.pyln-client ])"
 
-"""
-clightning-sane: helper to perform common Lightning node admin operations:
-- view channel balances
-- rebalance channels
-
-COMMON OPERATIONS:
-- view channel balances: `clightning-sane status`
-- rebalance channels to improve routability (without paying any fees): `clightning-sane autobalance`
-
-FULL OPERATION:
-- `clightning-sane status --full`
-  - `P$`: represents how many msats i've captured in fees from this channel.
-  - `COST`: rough measure of how much it's "costing" me to let my channel partner hold funds on his side of the channel.
-            this is based on the notion that i only capture fees from outbound transactions, and so the channel partner holding all liquidity means i can't capture fees on that liquidity.
-"""
-
 # pyln-client docs: <https://github.com/ElementsProject/lightning/tree/master/contrib/pyln-client>
 # terminology:
 # - "scid": "Short Channel ID", e.g. 123456x7890x0
@@ -742,7 +726,7 @@ def main():
     logging.basicConfig()
     logger.setLevel(logging.INFO)
 
-    parser = argparse.ArgumentParser(description=__doc__)
+    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")

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

@@ -20,6 +20,7 @@
     ./navidrome.nix
     ./nginx.nix
     ./nixos-prebuild.nix
+    ./nixserve.nix
     ./ntfy
     ./pict-rs.nix
     ./pleroma.nix

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

@@ -2,7 +2,7 @@
 {
   imports = [
     ./nfs.nix
-    ./sftpgo
+    ./sftpgo.nix
   ];
 
   users.groups.export = {};

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

@@ -15,7 +15,6 @@
 # - could maybe be done with some mount option?
 
 { config, lib, ... }:
-lib.mkIf false  #< TODO: remove nfs altogether! it's not exactly the most secure
 {
   services.nfs.server.enable = true;
 
@@ -27,7 +26,7 @@ lib.mkIf false  #< TODO: remove nfs altogether! it's not exactly the most secure
     description = "NFS server portmapper";
   };
   sane.ports.ports."2049" = {
-    protocol = [ "tcp" "udp" ];
+    protocol = [ "tcp" ];
     visibleTo.lan = true;
     description = "NFS server";
   };
@@ -52,23 +51,6 @@ lib.mkIf false  #< TODO: remove nfs altogether! it's not exactly the most secure
   services.nfs.server.mountdPort = 4002;
   services.nfs.server.statdPort = 4000;
 
-  services.nfs.extraConfig = ''
-    [nfsd]
-    # XXX: NFS over UDP REQUIRES SPECIAL CONFIG TO AVOID DATA LOSS.
-    # see `man 5 nfs`: "Using NFS over UDP on high-speed links".
-    # it's actually just a general property of UDP over IPv4 (IPv6 fixes it).
-    # both the client and the server should configure a shorter-than-default IPv4 fragment reassembly window to mitigate.
-    # OTOH, tunneling NFS over Wireguard also bypasses this weakness, because a mis-assembled packet would not have a valid signature.
-    udp=y
-
-    [exports]
-    # all export paths are relative to rootdir.
-    # for NFSv4, the export with fsid=0 behaves as `/` publicly,
-    # but NFSv3 implements no such feature.
-    # using `rootdir` instead of relying on `fsid=0` allows consistent export paths regardless of NFS proto version
-    rootdir=/var/export
-  '';
-
   # format:
   #   fspoint	visibility(options)
   # options:
@@ -103,20 +85,13 @@ lib.mkIf false  #< TODO: remove nfs altogether! it's not exactly the most secure
       in "${export} 10.78.79.0/22(${lib.concatStringsSep "," lanOpts}) 10.0.10.0/24(${lib.concatStringsSep "," vpnOpts})";
   in lib.concatStringsSep "\n" [
     (fmtExport {
-      export = "/";
+      export = "/var/export";
       baseOpts = [ "crossmnt" "fsid=root" ];
       extraLanOpts = [ "ro" ];
       extraVpnOpts = [ "rw" "no_root_squash" ];
     })
     (fmtExport {
-      # provide /media as an explicit export. NFSv4 can transparently mount a subdir of an export, but NFSv3 can only mount paths which are exports.
-      export = "/media";
-      baseOpts = [ "crossmnt" ];  # TODO: is crossmnt needed here?
-      extraLanOpts = [ "ro" ];
-      extraVpnOpts = [ "rw" "no_root_squash" ];
-    })
-    (fmtExport {
-      export = "/playground";
+      export = "/var/export/playground";
       baseOpts = [
         "mountpoint"
         "all_squash"

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

@@ -0,0 +1,186 @@
+# 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/default.nix

@@ -1,158 +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.
-
-{ config, lib, pkgs, sane-lib, ... }:
-let
-  external_auth_hook = pkgs.static-nix-shell.mkPython3Bin {
-    pname = "external_auth_hook";
-    srcRoot = ./.;
-    pyPkgs = [ "passlib" ];
-  };
-  # 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.
-  #   50000 is used by soulseek.
-  passiveStart = 50050;
-  passiveEnd   = 50070;
-in
-{
-  sane.ports.ports = {
-    "21" = {
-      protocol = [ "tcp" ];
-      visibleTo.lan = true;
-      # visibleTo.wan = true;
-      description = "colin-FTP server";
-    };
-    "990" = {
-      protocol = [ "tcp" ];
-      visibleTo.lan = true;
-      visibleTo.wan = true;
-      description = "colin-FTPS server";
-    };
-  } // (sane-lib.mapToAttrs
-    (port: {
-      name = builtins.toString port;
-      value = {
-        protocol = [ "tcp" ];
-        visibleTo.lan = true;
-        visibleTo.wan = true;
-        description = "colin-FTP server data port range";
-      };
-    })
-    (lib.range passiveStart passiveEnd)
-  );
-
-  # use nginx/acme to produce a cert for FTPS
-  services.nginx.virtualHosts."ftp.uninsane.org" = {
-    addSSL = true;
-    enableACME = true;
-  };
-  sane.dns.zones."uninsane.org".inet.CNAME."ftp" = "native";
-
-  services.sftpgo = {
-    enable = true;
-    group = "export";
-
-    package = pkgs.sftpgo.overrideAttrs (upstream: {
-      patches = (upstream.patches or []) ++ [
-        # fix for compatibility with kodi:
-        # ftp LIST operation returns entries over-the-wire like:
-        # - dgrwxrwxr-x 1 ftp ftp            9 Apr  9 15:05 Videos
-        # however not all clients understand all mode bits (like that `g`, indicating SGID / group sticky bit).
-        # instead, only send mode bits which are well-understood.
-        # the full set of bits, from which i filter, is found here: <https://pkg.go.dev/io/fs#FileMode>
-        ./safe_fileinfo.patch
-      ];
-    });
-
-    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 (also WAN traffic forwarded from the gateway)
-            address = "10.78.79.51";
-            port = 21;
-            debug = true;
-          }
-          {
-            # binding this means any wireguard client can connect
-            address = "10.0.10.5";
-            port = 990;
-            debug = true;
-            tls_mode = 2;  # 2 = "implicit FTPS": client negotiates TLS before any FTP command.
-          }
-          {
-            # binding this means any LAN client can connect (also WAN traffic forwarded from the gateway)
-            address = "10.78.79.51";
-            port = 990;
-            debug = true;
-            tls_mode = 2;  # 2 = "implicit FTPS": client negotiates TLS before any FTP command.
-          }
-        ];
-
-        # active mode is susceptible to "bounce attacks", without much benefit over passive mode
-        disable_active_mode = true;
-        hash_support = true;
-        passive_port_range = {
-          start = passiveStart;
-          end = passiveEnd;
-        };
-
-        certificate_file = "/var/lib/acme/ftp.uninsane.org/full.pem";
-        certificate_key_file = "/var/lib/acme/ftp.uninsane.org/key.pem";
-
-        banner = ''
-          Welcome, friends, to Colin's FTP server! Also available via NFS on the same host, but LAN-only.
-
-          Read-only access (LAN-restricted):
-          Username: "anonymous"
-          Password: "anonymous"
-
-          CONFIGURE YOUR CLIENT FOR "PASSIVE" MODE, e.g. `ftp --passive ftp.uninsane.org`.
-          Please let me know if anything's broken or not as it should be. Otherwise, browse and transfer freely :)
-        '';
-
-      };
-      data_provider = {
-        driver = "memory";
-        external_auth_hook = "${external_auth_hook}/bin/external_auth_hook";
-        # 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"
-    "media"
-    "nginx"  # to access certs
-  ];
-
-  systemd.services.sftpgo = {
-    after = [ "network-online.target" ];
-    wants = [ "network-online.target" ];
-    serviceConfig = {
-      ReadWritePaths = [ "/var/export" ];
-
-      Restart = "always";
-      RestartSec = "20s";
-      UMask = lib.mkForce "0002";
-    };
-  };
-}

hosts/by-name/servo/services/export/sftpgo/external_auth_hook

@@ -1,155 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p "python3.withPackages (ps: [ ps.passlib ])"
-# vim: set filetype=python :
-#
-# 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
-#
-# 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.
-
-import json
-import os
-import passlib.hosts
-
-from hmac import compare_digest
-
-authFail = dict(username="")
-
-PERM_RO = [ "list", "download" ]
-PERM_RW = [
-  # read-only:
-  "list",
-  "download",
-  # write:
-  "upload",
-  "overwrite",
-  "delete",
-  "rename",
-  "create_dirs",
-  "create_symlinks",
-  # intentionally omitted:
-  # "chmod",
-  # "chown",
-  # "chtimes",
-]
-
-TRUSTED_CREDS = [
-  # /etc/shadow style creds.
-  # mkpasswd -m sha-512
-  # $<method>$<salt>$<hash>
-  "$6$Zq3c2u4ghUH4S6EP$pOuRt13sEKfX31OqPbbd1LuhS21C9MICMc94iRdTAgdAcJ9h95gQH/6Jf6Ie4Obb0oxQtojRJ1Pd/9QHOlFMW."  #< m. rocket boy
-]
-
-def mkAuthOk(username: str, permissions: dict[str, list[str]]) -> dict:
-  return dict(
-    status = 1,
-    username = username,
-    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 = permissions,
-    upload_bandwidth = 0,
-    download_bandwidth = 0,
-    filters = dict(
-      allowed_ip = [],
-      denied_ip = [],
-    ),
-    public_keys = [],
-    # other fields:
-    # ? groups
-    # ? virtual_folders
-  )
-
-def isLan(ip: str) -> bool:
-  return ip.startswith("10.78.76.") \
-    or ip.startswith("10.78.77.") \
-    or ip.startswith("10.78.78.") \
-    or ip.startswith("10.78.79.")
-
-def isWireguard(ip: str) -> bool:
-  return ip.startswith("10.0.10.")
-
-def isTrustedCred(password: str) -> bool:
-  for cred in TRUSTED_CREDS:
-    if passlib.hosts.linux_context.verify(password, cred):
-      return True
-
-  return False
-
-def getAuthResponse(ip: str, username: str, password: str) -> dict:
-  """
-  return a sftpgo auth response either denying the user or approving them
-  with a set of permissions.
-  """
-  if isTrustedCred(password) and username != "colin":
-    # allow r/w access from those with a special token
-    return mkAuthOk(username, permissions = {
-      "/": PERM_RW,
-      "/playground": PERM_RW,
-    })
-  if isWireguard(ip):
-    # allow any user from wireguard
-    return mkAuthOk(username, permissions = {
-      "/": PERM_RW,
-      "/playground": PERM_RW,
-    })
-  if isLan(ip):
-    if username == "anonymous":
-      # allow anonymous users on the LAN
-      return mkAuthOk("anonymous", permissions = {
-        "/": PERM_RO,
-        "/playground": PERM_RW,
-      })
-
-  return authFail
-
-def main():
-  ip = os.environ.get("SFTPGO_AUTHD_IP", "")
-  username = os.environ.get("SFTPGO_AUTHD_USERNAME", "")
-  password = os.environ.get("SFTPGO_AUTHD_PASSWORD", "")
-  resp = getAuthResponse(ip, username, password)
-  print(json.dumps(resp))
-
-if __name__ == "__main__":
-  main()

hosts/by-name/servo/services/export/sftpgo/safe_fileinfo.patch

@@ -1,32 +0,0 @@
-diff --git a/internal/ftpd/handler.go b/internal/ftpd/handler.go
-index 036c3977..33211261 100644
---- a/internal/ftpd/handler.go
-+++ b/internal/ftpd/handler.go
-@@ -169,7 +169,7 @@ func (c *Connection) Stat(name string) (os.FileInfo, error) {
- 		}
- 		return nil, err
- 	}
--	return fi, nil
-+	return vfs.NewFileInfo(name, fi.IsDir(), fi.Size(), fi.ModTime(), false), nil
- }
-
- // Name returns the name of this connection
-@@ -315,7 +315,17 @@ func (c *Connection) ReadDir(name string) (ftpserver.DirLister, error) {
- 		}, nil
- 	}
-
--	return c.ListDir(name)
-+	lister, err := c.ListDir(name)
-+	if err != nil {
-+		return nil, err
-+	}
-+	return &patternDirLister{
-+		DirLister:      lister,
-+		pattern:        "*",
-+		lastCommand:    c.clientContext.GetLastCommand(),
-+		dirName:        name,
-+		connectionPath: c.clientContext.Path(),
-+	}, nil
- }
-
- // GetHandle implements ClientDriverExtentionFileTransfer

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

@@ -0,0 +1,23 @@
+#!/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/gitea.nix

@@ -50,15 +50,9 @@
       ENABLE_CAPTCHA = true;
       NOREPLY_ADDRESS = "noreply.anonymous.git@uninsane.org";
     };
-    session = {
-      COOKIE_SECURE = true;
-      # keep me logged in for 30 days
-      SESSION_LIFE_TIME = 60 * 60 * 24 * 30;
-    };
+    session.COOKIE_SECURE = true;
     repository = {
       DEFAULT_BRANCH = "master";
-      ENABLE_PUSH_CREATE_USER = true;
-      ENABLE_PUSH_CREATE_ORG = true;
     };
     other = {
       SHOW_FOOTER_TEMPLATE_LOAD_TIME = false;
@@ -96,8 +90,6 @@
     ];
   };
 
-  services.openssh.settings.UsePAM = true;  #< required for `git` user to authenticate
-
   # hosted git (web view and for `git <cmd>` use
   # TODO: enable publog?
   services.nginx.virtualHosts."git.uninsane.org" = {

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

@@ -20,7 +20,7 @@
           --ignore-panel=HOSTS \
           --ws-url=wss://sink.uninsane.org:443/ws \
           --port=7890 \
-          -o /var/lib/goaccess/index.html
+          -o /var/lib/uninsane/sink/index.html
       '';
       ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
       Type = "simple";
@@ -28,19 +28,17 @@
       RestartSec = "10s";
 
       # hardening
-      # TODO: run as `goaccess` user and add `goaccess` user to group `nginx`.
+      WorkingDirectory = "/tmp";
       NoNewPrivileges = true;
-      PrivateDevices = "yes";
       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";
-      ProtectSystem = "strict";
-      ReadOnlyPaths = [ "/var/log/nginx" ];
-      ReadWritePaths = [ "/proc/self" "/var/lib/goaccess" ];
-      StateDirectory = "goaccess";
-      SystemCallFilter = "~@clock @cpu-emulation @debug @keyring @memlock @module @mount @obsolete @privileged @reboot @resources @setuid @swap @raw-io";
-      WorkingDirectory = "/var/lib/goaccess";
     };
     after = [ "network.target" ];
     wantedBy = [ "multi-user.target" ];
@@ -51,7 +49,7 @@
     addSSL = true;
     enableACME = true;
     # inherit kTLS;
-    root = "/var/lib/goaccess";
+    root = "/var/lib/uninsane/sink";
 
     locations."/ws" = {
       proxyPass = "http://127.0.0.1:7890";

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

@@ -1,6 +1,5 @@
-{ lib, pkgs, ... }:
+{ ... }:
 
-lib.mkIf false  #< TODO: re-enable once confident of sandboxing
 {
   sane.persist.sys.byStore.plaintext = [
     # TODO: mode? we only need this to save Indexer creds ==> migrate to config?
@@ -13,8 +12,6 @@ lib.mkIf false  #< TODO: re-enable once confident of sandboxing
   systemd.services.jackett.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
-    ExecStartPre = [ "${lib.getExe pkgs.sane-scripts.ip-check} --no-upnp --expect 185.157.162.178" ];  # abort if public IP is not as expected
-
     # patch jackett to listen on the public interfaces
     # ExecStart = lib.mkForce "${pkgs.jackett}/bin/Jackett --NoUpdates --DataFolder /var/lib/jackett/.config/Jackett --ListenPublic";
   };

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

@@ -75,7 +75,7 @@
   # Jellyfin multimedia server
   # this is mostly taken from the official jellfin.org docs
   services.nginx.virtualHosts."jelly.uninsane.org" = {
-    forceSSL = true;
+    addSSL = true;
     enableACME = true;
     # inherit kTLS;
 

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

@@ -12,7 +12,7 @@ in
   services.komga.port = 11319;  # chosen at random
 
   services.nginx.virtualHosts."komga.uninsane.org" = {
-    forceSSL = true;
+    addSSL = true;
     enableACME = true;
     locations."/" = {
       proxyPass = "http://127.0.0.1:${builtins.toString port}";

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

@@ -10,21 +10,16 @@ let
   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;
-  # pict-rs = pkgs.pict-rs.overrideAttrs (upstream: {
-  #   # as of v0.4.2, 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.
-  #   # XXX: this patch no longer applies after 0.5.10 -> 0.5.11 update.
-  #   #      git log is hard to parse, but *suggests* that video is natively supported
-  #   #      better than in the 0.4.2 days, e.g. 5fd59fc5b42d31559120dc28bfef4e5002fb509e
-  #   #      "Change commandline flag to allow disabling video, since it is enabled by default"
-  #   postPatch = (upstream.postPatch or "") + ''
-  #     substituteInPlace src/validate.rs \
-  #       --replace-fail 'if transcode_options.needs_reencode() {' 'if false {'
-  #   '';
-  # });
+  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;

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

@@ -89,16 +89,6 @@ in
         disable_symlinks on;
       '';
     };
-    locations."/share/Milkbags/" = {
-      alias = "/var/media/Videos/Milkbags/";
-      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 =

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

@@ -0,0 +1,21 @@
+{ 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/pleroma.nix

@@ -25,7 +25,7 @@ in
 
     config :pleroma, Pleroma.Web.Endpoint,
       url: [host: "fed.uninsane.org", scheme: "https", port: 443],
-      http: [ip: {127, 0, 0, 1}, port: 4040]
+      http: [ip: {127, 0, 0, 1}, port: 4000]
     #   secret_key_base: "{secrets.pleroma.secret_key_base}",
     #   signing_salt: "{secrets.pleroma.signing_salt}"
 
@@ -167,7 +167,7 @@ in
     enableACME = true;
     # inherit kTLS;
     locations."/" = {
-      proxyPass = "http://127.0.0.1:4040";
+      proxyPass = "http://127.0.0.1:4000";
       recommendedProxySettings = true;
       # documented: https://git.pleroma.social/pleroma/pleroma/-/blob/develop/installation/pleroma.nginx
       extraConfig = ''

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

@@ -3,15 +3,10 @@
 #
 # config precedence (higher precedence overrules lower precedence):
 # - Default Values < Environment Variables < YAML Configuraiton File < Command Line Arguments
-#
-# debugging:
-# - soulseek is just *flaky*. if you see e.g. DNS errors, even though you can't replicate them via `dig` or `getent ahostsv4`, just give it 10 minutes to work out:
-#   - "Soulseek.AddressException: Failed to resolve address 'vps.slsknet.org': Resource temporarily unavailable"
-{ config, lib, pkgs, ... }:
-
+{ config, lib, ... }:
 {
   sane.persist.sys.byStore.plaintext = [
-    { user = "slskd"; group = "media"; path = "/var/lib/slskd"; method = "bind"; }
+    { user = "slskd"; group = "slskd"; path = "/var/lib/slskd"; method = "bind"; }
   ];
   sops.secrets."slskd_env" = {
     owner = config.users.users.slskd.name;
@@ -20,7 +15,7 @@
 
   users.users.slskd.extraGroups = [ "media" ];
 
-  sane.ports.ports."50300" = {
+  sane.ports.ports."50000" = {
     protocol = [ "tcp" ];
     # not visible to WAN: i run this in a separate netns
     visibleTo.ovpn = true;
@@ -33,14 +28,12 @@
     forceSSL = true;
     enableACME = true;
     locations."/" = {
-      proxyPass = "http://10.0.1.6:5030";
+      proxyPass = "http://10.0.1.6:5001";
       proxyWebsockets = true;
     };
   };
 
   services.slskd.enable = true;
-  services.slskd.domain = null;  # i'll manage nginx for it
-  services.slskd.group = "media";
   # env file, for auth (SLSKD_SLSK_PASSWORD, SLSKD_SLSK_USERNAME)
   services.slskd.environmentFile = config.sops.secrets.slskd_env.path;
   services.slskd.settings = {
@@ -69,12 +62,13 @@
     # flags.volatile = true;  # store searches and active transfers in RAM (completed transfers still go to disk). rec for btrfs/zfs
   };
 
-  systemd.services.slskd.serviceConfig = {
+  systemd.services.slskd = {
+    serviceConfig = {
       # run this behind the OVPN static VPN
       NetworkNamespacePath = "/run/netns/ovpns";
-    ExecStartPre = [ "${lib.getExe pkgs.sane-scripts.ip-check} --no-upnp --expect 185.157.162.178" ];  # abort if public IP is not as expected
-
       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

@@ -22,67 +22,7 @@ let
         --replace-fail 'set(TR_USER_AGENT_PREFIX "''${TR_SEMVER}")' 'set(TR_USER_AGENT_PREFIX "3.00")'
     '';
   });
-  download-dir = "/var/media/torrents";
-  torrent-done = pkgs.writeShellApplication {
-    name = "torrent-done";
-    runtimeInputs = with pkgs; [
-      acl
-      coreutils
-      findutils
-      rsync
-      util-linux
-    ];
-    text = ''
-      destructive() {
-        if [ -n "''${TR_DRY_RUN-}" ]; then
-          echo "$*"
-        else
-          "$@"
-        fi
-      }
-      if [[ "$TR_TORRENT_DIR" =~ ^.*freeleech.*$ ]]; then
-        # freeleech torrents have no place in my permanent library
-        echo "freeleech: nothing to do"
-        exit 0
-      fi
-      if ! [[ "$TR_TORRENT_DIR" =~ ^${download-dir}/.*$ ]]; then
-        echo "unexpected torrent dir, aborting: $TR_TORRENT_DIR"
-        exit 0
-      fi
-
-      REL_DIR="''${TR_TORRENT_DIR#${download-dir}/}"
-      MEDIA_DIR="/var/media/$REL_DIR"
-
-      destructive mkdir -p "$(dirname "$MEDIA_DIR")"
-      destructive rsync -arv "$TR_TORRENT_DIR/" "$MEDIA_DIR/"
-      # make the media rwx by anyone in the group
-      destructive find "$MEDIA_DIR" -type d -exec setfacl --recursive --modify d:g::rwx,o::rx {} \;
-      destructive find "$MEDIA_DIR" -type d -exec chmod g+rw,a+rx {} \;
-
-      # if there's a single directory inside the media dir, then inline that
-      subdirs=("$MEDIA_DIR"/*)
-      if [ ''${#subdirs} -eq 1 ]; then
-        dirname="''${subdirs[0]}"
-        if [ -d "$dirname" ]; then
-          mv "$dirname"/* "$MEDIA_DIR/" && rmdir "$dirname"
-        fi
-      fi
-
-      # remove noisy files:
-      find "$MEDIA_DIR/" -type f \(\
-           -iname 'www.YTS.*.jpg' \
-        -o -iname 'WWW.YIFY*.COM.jpg' \
-        -o -iname 'YIFY*.com.txt' \
-        -o -iname 'YTS*.com.txt' \
-        \) -exec rm {} \;
-
-      # dedupe the whole media library.
-      # yeah, a bit excessive: move this to a cron job if that's problematic.
-      destructive hardlink /var/media --reflink=always --ignore-time --verbose
-    '';
-  };
 in
-lib.mkIf false  #< TODO: re-enable once confident of sandboxing
 {
   sane.persist.sys.byStore.plaintext = [
     # TODO: mode? we need this specifically for the stats tracking in .config/
@@ -106,8 +46,8 @@ lib.mkIf false  #< TODO: re-enable once confident of sandboxing
     # 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.
-    # 10.0.1.6 => allow rpc only from the root servo ns. it'll tunnel things to the net, if need be.
-    rpc-bind-address = "10.0.1.6";
+    # 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;
@@ -117,10 +57,6 @@ lib.mkIf false  #< TODO: re-enable once confident of sandboxing
     rpc-password = "{503fc8928344f495efb8e1f955111ca5c862ce0656SzQnQ5";
     rpc-whitelist-enabled = false;
 
-    # force behind ovpns in case the NetworkNamespace fails somehow
-    bind-address-ipv4 = "185.157.162.178";
-    port-forwarding-enabled = false;
-
     # hopefully, make the downloads world-readable
     # umask = 0;  #< default is 2: i.e. deny writes from world
 
@@ -136,23 +72,11 @@ lib.mkIf false  #< TODO: re-enable once confident of sandboxing
     # see: https://git.zknt.org/mirror/transmission/commit/cfce6e2e3a9b9d31a9dafedd0bdc8bf2cdb6e876?lang=bg-BG
     anti-brute-force-enabled = false;
 
-    inherit download-dir;
-    incomplete-dir = "${download-dir}/incomplete";
+    download-dir = "/var/media";
+    incomplete-dir = "/var/media/incomplete";
     # transmission regularly fails to move stuff from the incomplete dir to the main one, so disable:
+    # TODO: uncomment this line!
     incomplete-dir-enabled = false;
-
-    # env vars available in script:
-    # - TR_APP_VERSION - Transmission's short version string, e.g. `4.0.0`
-    # - TR_TIME_LOCALTIME
-    # - TR_TORRENT_BYTES_DOWNLOADED - Number of bytes that were downloaded for this torrent
-    # - TR_TORRENT_DIR - Location of the downloaded data
-    # - TR_TORRENT_HASH - The torrent's info hash
-    # - TR_TORRENT_ID
-    # - TR_TORRENT_LABELS - A comma-delimited list of the torrent's labels
-    # - TR_TORRENT_NAME - Name of torrent (not filename)
-    # - TR_TORRENT_TRACKERS - A comma-delimited list of the torrent's trackers' announce URLs
-    script-torrent-done-enabled = true;
-    script-torrent-done-filename = "${torrent-done}/bin/torrent-done";
   };
 
   systemd.services.transmission.after = [ "wireguard-wg-ovpns.service" ];
@@ -160,11 +84,8 @@ lib.mkIf false  #< TODO: re-enable once confident of sandboxing
   systemd.services.transmission.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
-    ExecStartPre = [ "${lib.getExe pkgs.sane-scripts.ip-check} --no-upnp --expect 185.157.162.178" ];  # abort if public IP is not as expected
-
     Restart = "on-failure";
     RestartSec = "30s";
-    BindPaths = [ "/var/media" ];  #< so it can move completed torrents into the media library
   };
 
   # service to automatically backup torrents i add to transmission

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

@@ -2,11 +2,19 @@
 { config, lib, pkgs, ... }:
 
 let
-  dyn-dns = config.sane.services.dyn-dns;
   nativeAddrs = lib.mapAttrs (_name: builtins.head) config.sane.dns.zones."uninsane.org".inet.A;
   bindOvpn = "10.0.1.5";
-in
+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;
@@ -58,6 +66,23 @@ in
 
   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 = ''
@@ -82,72 +107,97 @@ in
     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;
 
-  sane.services.trust-dns.enable = true;
-  sane.services.trust-dns.instances = let
-    mkSubstitutions = flavor: {
-      "%AWAN%" = "$(cat '${dyn-dns.ipPath}')";
-      "%CNAMENATIVE%" = "servo.${flavor}";
-      "%ANATIVE%" = nativeAddrs."servo.${flavor}";
-      "%AOVPNS%" = "185.157.162.178";
+        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} ${flagsStr}
+          '';
         };
-  in
-  {
-    wan = {
-      substitutions = mkSubstitutions "wan";
-      listenAddrsIpv4 = [
-        nativeAddrs."servo.lan"
-        bindOvpn
-      ];
+
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
       };
-    lan = {
-      substitutions = mkSubstitutions "lan";
-      listenAddrsIpv4 = [ nativeAddrs."servo.lan" ];
-      port = 1053;
-    };
-    hn = {
-      substitutions = mkSubstitutions "hn";
-      listenAddrsIpv4 = [ nativeAddrs."servo.hn" ];
-      port = 1053;
-    };
-    # hn-resolver = {
-    #   # don't need %AWAN% here because we forward to the hn instance.
-    #   listenAddrsIpv4 = [ nativeAddrs."servo.hn" ];
-    #   extraConfig = {
-    #     zones = [
-    #       {
-    #         zone = "uninsane.org";
-    #         zone_type = "Forward";
-    #         stores = {
-    #           type = "forward";
-    #           name_servers = [
-    #             {
-    #               socket_addr = "${nativeAddrs."servo.hn"}:1053";
-    #               protocol = "udp";
-    #               trust_nx_responses = true;
-    #             }
-    #           ];
-    #         };
-    #       }
-    #       {
-    #         # 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;
-    #             }
-    #           ];
-    #         };
-    #       }
-    #     ];
-    #   };
-    # };
+    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 = [
@@ -157,3 +207,4 @@ in
     # "trust-dns-hn-resolver.service"  # doesn't need restart because it doesn't know about WAN IP
   ];
 }
+]

hosts/common/default.nix

@@ -1,30 +1,24 @@
 { config, lib, pkgs, ... }:
 {
   imports = [
-    ./boot.nix
     ./feeds.nix
     ./fs.nix
+    ./hardware
     ./home
     ./hosts.nix
     ./ids.nix
     ./machine-id.nix
     ./net
-    ./nix.nix
+    ./nix
     ./persist.nix
     ./polyunfill.nix
     ./programs
-    ./quirks.nix
     ./secrets.nix
     ./ssh.nix
     ./systemd.nix
     ./users
   ];
 
-
-  # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
-  # this affects where nixos modules look for stateful data which might have been migrated across releases.
-  system.stateVersion = "21.11";
-
   sane.nixcache.enable-trusted-keys = true;
   sane.nixcache.enable = lib.mkDefault true;
   sane.persist.enable = lib.mkDefault true;
@@ -32,6 +26,9 @@
   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
 

hosts/common/feeds.nix

@@ -81,15 +81,10 @@ let
     (fromDb "feeds.simplecast.com/xKJ93w_w" // uncat)  # Atlas Obscura
     (fromDb "feeds.transistor.fm/acquired" // tech)
     (fromDb "fulltimenix.com" // tech)
-    (fromDb "futureofcoding.org/episodes" // tech)
-    (fromDb "hackerpublicradio.org" // tech)
     (fromDb "lexfridman.com/podcast" // rat)
     (fromDb "mapspodcast.libsyn.com" // uncat)  # Multidisciplinary Association for Psychedelic Studies
-    (fromDb "microarch.club" // tech)
-    (fromDb "mintcast.org" // tech)
     (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/money-stuff-the-podcast")  # Matt Levine
     (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)
@@ -105,12 +100,9 @@ let
     (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 "theamphour.com" // tech)
-    (fromDb "techtalesshow.com" // tech)  # Corbin Davenport
     (fromDb "techwontsave.us" // pol)  # rec by Cory Doctorow
     (fromDb "wakingup.libsyn.com" // pol)  # Sam Harris
     (fromDb "werenotwrong.fireside.fm" // pol)
-    (mkPod "https://sfconservancy.org/casts/the-corresponding-source/feeds/ogg/" // tech)
 
     # (fromDb "feeds.libsyn.com/421877" // rat)  # Less Wrong Curated
     # (fromDb "feeds.megaphone.fm/hubermanlab" // uncat)  # Daniel Huberman on sleep
@@ -130,11 +122,11 @@ let
     (fromDb "acoup.blog/feed")  # history, states. author: <https://historians.social/@bretdevereaux/following>
     (fromDb "amosbbatto.wordpress.com" // tech)
     (fromDb "anish.lakhwara.com" // tech)
-    (fromDb "apenwarr.ca/log/rss.php" // tech)  # CEO of tailscale
     (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)
@@ -145,19 +137,20 @@ let
     (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 "hardcoresoftware.learningbyshipping.com" // tech)  # Steven Sinofsky
     (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 "jwz.org/blog" // tech // pol)  # DNA lounge guy, loooong-time blogger
     (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)
@@ -165,20 +158,19 @@ let
     (fromDb "mg.lol" // tech)
     (fromDb "mindingourway.com" // rat)
     (fromDb "morningbrew.com/feed" // pol)
-    (fromDb "nixpkgs.news" // tech)
     (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 "samuel.dionne-riel.com" // tech)  # SamuelDR
     (fromDb "sagacioussuricata.com" // tech)  # ian (Sanctuary)
     (fromDb "semiaccurate.com" // tech)
     (fromDb "sideways-view.com" // rat)  # Paul Christiano
@@ -187,42 +179,31 @@ let
     (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 "weekinethereumnews.com" // tech)
-    (fromDb "willow.phantoma.online")  # wizard@xyzzy.link
+    # (fromDb "webcurious.co.uk" // uncat)  # link aggregator; defunct?
     (fromDb "xn--gckvb8fzb.com" // tech)
-    (fromDb "xorvoid.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://solar.lowtechmagazine.com/posts/index.xml" // tech // weekly)
-    (mkText "https://www.stratechery.com/rss" // pol // weekly)  # Ben Thompson
-
-    # (fromDb "balajis.com" // pol)  # Balaji
-    # (fromDb "drewdevault.com" // tech)
-    # (fromDb "econlib.org" // pol)
-    # (fromDb "lesswrong.com" // rat)
-    # (fromDb "profectusmag.com" // pol)  # some conservative/libertarian think tank
-    # (fromDb "thesideview.co" // uncat)  # spiritual journal; RSS items are stubs
-    # (fromDb "theregister.com" // tech)
-    # (fromDb "vitalik.ca" // tech)  # moved to vitalik.eth.limo
-    # (fromDb "webcurious.co.uk" // uncat)  # link aggregator; defunct?
-    # (mkSubstack "doomberg" // tech // weekly)  # articles are all pay-walled
-    # (mkText "https://github.com/Kaiteki-Fedi/Kaiteki/commits/master.atom" // tech // infrequent)
     # (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 = [
@@ -234,20 +215,17 @@ let
     (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")  # they're all like 1-minute long videos now? what happened @Vsauce?
-
-    # (fromDb "youtube.com/@rossmanngroup" // pol // tech)  # Louis Rossmann
+    (fromDb "youtube.com/@Vsauce")
   ];
 
   images = [
     (fromDb "catandgirl.com" // img // humor)
-    (fromDb "davidrevoy.com" // img // art)
-    (fromDb "grumpy.website" // img // humor)
     (fromDb "miniature-calendar.com" // img // art // daily)
     (fromDb "pbfcomics.com" // img // humor)
     (fromDb "poorlydrawnlines.com/feed" // img // humor)

hosts/common/fs.nix

@@ -2,7 +2,7 @@
 # - x-systemd options: <https://www.freedesktop.org/software/systemd/man/systemd.mount.html>
 # - fuse options: `man mount.fuse`
 
-{ config, lib, pkgs, sane-lib, utils, ... }:
+{ lib, pkgs, sane-lib, ... }:
 
 let
   fsOpts = rec {
@@ -23,15 +23,15 @@ let
     # 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.
-    # see: `man systemd.automount`, `man automount`, `man autofs`
+    # 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"
     ];
 
-    fuse = [
+    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.
@@ -44,18 +44,7 @@ let
       # 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"
     ];
-    fuseColin = fuse ++ [
-      "uid=1000"
-      "gid=100"
-    ];
-
-    ssh = common ++ fuse ++ [
-      "identityfile=/home/colin/.ssh/id_ed25519"
-      # i *think* idmap=user means that `colin` on `localhost` and `colin` on the remote are actually treated as the same user, even if their uid/gid differs?
-      # i.e., local colin's id is translated to/from remote colin's id on every operation?
-      "idmap=user"
-    ];
-    sshColin = ssh ++ fuseColin ++ [
+    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`
@@ -63,6 +52,9 @@ let
       # 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
@@ -75,44 +67,21 @@ let
     # 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
-    # intr       = allow Ctrl+C to abort I/O (it will error with `EINTR`)
     # soft       = on "major timeout", report I/O error to userspace
-    # softreval  = on "major timeout", service the request using known-stale cache results instead of erroring -- if such cache data exists
     # 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.
-    # proto=udp  = encapsulate protocol ops inside UDP packets instead of a TCP session.
-    #              requires `nfsvers=3` and a kernel compiled with `NFS_DISABLE_UDP_SUPPORT=n`.
-    #              UDP might be preferable to TCP because the latter is liable to hang for ~100s (kernel TCP timeout) after a link drop.
-    #              however, even UDP has issues with `umount` hanging.
-    #
-    # N.B.: don't change these without first testing the behavior of sandboxed apps on a flaky network.
     nfs = common ++ [
-      # "actimeo=5"
-      # "bg"
-      "retrans=1"
+      # "actimeo=10"
+      "bg"
+      "retrans=4"
       "retry=0"
-      # "intr"
       "soft"
-      "softreval"
-      "timeo=30"
+      "timeo=15"
       "nofail"  # don't fail remote-fs.target when this mount fails  (not an option for sshfs else would be common)
-      # "proto=udp"  # default kernel config doesn't support NFS over UDP: <https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1964093> (see comment 11).
-      # "nfsvers=3"  # NFSv4+ doesn't support UDP at *all*. it's ok to omit nfsvers -- server + client will negotiate v3 based on udp requirement. but omitting causes confusing mount errors when the server is *offline*, because the client defaults to v4 and thinks the udp option is a config error.
-      # "x-systemd.idle-timeout=10"  # auto-unmount after this much inactivity
-    ];
-
-    # manually perform a ftp mount via e.g.
-    #   curlftpfs -o ftpfs_debug=2,user=anonymous:anonymous,connect_timeout=10 -f -s ftp://servo-hn /mnt/my-ftp
-    ftp = common ++ fuseColin ++ [
-      # "ftpfs_debug=2"
-      "user=colin:ipauth"
-      # connect_timeout=10: casting shows to T.V. fails partway through about half the time
-      "connect_timeout=20"
     ];
   };
   remoteHome = host: {
-    sane.programs.sshfs-fuse.enableFor.system = true;
     fileSystems."/mnt/${host}/home" = {
       device = "colin@${host}:/home/colin";
       fsType = "fuse.sshfs";
@@ -125,54 +94,6 @@ let
       dir.acl.mode = "0700";
     };
   };
-  remoteServo = subdir: {
-    sane.programs.curlftpfs.enableFor.system = true;
-    sane.fs."/mnt/servo/${subdir}" = sane-lib.fs.wanted {
-      dir.acl.user = "colin";
-      dir.acl.group = "users";
-      dir.acl.mode = "0750";
-    };
-    fileSystems."/mnt/servo/${subdir}" = {
-      device = "ftp://servo-hn:/${subdir}";
-      noCheck = true;
-      fsType = "fuse.curlftpfs";
-      options = fsOpts.ftp ++ fsOpts.noauto ++ fsOpts.wg;
-      # fsType = "nfs";
-      # options = fsOpts.nfs ++ fsOpts.lazyMount ++ fsOpts.wg;
-    };
-    systemd.services."automount-servo-${utils.escapeSystemdPath subdir}" = let
-      fs = config.fileSystems."/mnt/servo/${subdir}";
-    in {
-      # this is a *flaky* network mount, especially on moby.
-      # if done as a normal autofs mount, access will eternally block when network is dropped.
-      # notably, this would block *any* sandboxed app which allows media access, whether they actually try to use that media or not.
-      # a practical solution is this: mount as a service -- instead of autofs -- and unmount on timeout error, in a restart loop.
-      # until the ftp handshake succeeds, nothing is actually mounted to the vfs, so this doesn't slow down any I/O when network is down.
-      description = "automount /mnt/servo/${subdir} in a fault-tolerant and non-blocking manner";
-      after = [ "network-online.target" ];
-      requires = [ "network-online.target" ];
-      wantedBy = [ "default.target" ];
-
-      serviceConfig.Type = "simple";
-      serviceConfig.ExecStart = lib.escapeShellArgs [
-        "/usr/bin/env"
-        "PATH=/run/current-system/sw/bin"
-        "mount.${fs.fsType}"
-        "-f"  # foreground (i.e. don't daemonize)
-        "-s"  # single-threaded (TODO: it's probably ok to disable this?)
-        "-o"
-        (lib.concatStringsSep "," (lib.filter (o: !lib.hasPrefix "x-systemd." o) fs.options))
-        fs.device
-        "/mnt/servo/${subdir}"
-      ];
-      # not sure if this configures a linear, or exponential backoff.
-      # but the first restart will be after `RestartSec`, and the n'th restart (n = RestartSteps) will be RestartMaxDelaySec after the n-1'th exit.
-      serviceConfig.Restart = "always";
-      serviceConfig.RestartSec = "10s";
-      serviceConfig.RestartMaxDelaySec = "120s";
-      serviceConfig.RestartSteps = "5";
-    };
-  };
 in
 lib.mkMerge [
   {
@@ -207,6 +128,35 @@ lib.mkMerge [
     # 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
@@ -214,24 +164,13 @@ lib.mkMerge [
     # ];
 
     programs.fuse.userAllowOther = true;  #< necessary for `allow_other` or `allow_root` options.
+    environment.systemPackages = [
+      pkgs.sshfs-fuse
+    ];
   }
 
-  (remoteHome "crappy")
   (remoteHome "desko")
   (remoteHome "lappy")
   (remoteHome "moby")
-  # this granularity of servo media mounts is necessary to support sandboxing:
-  # for flaky mounts, we can only bind the mountpoint itself into the sandbox,
-  # so it's either this or unconditionally bind all of media/.
-  (remoteServo "media/archive")
-  (remoteServo "media/Books")
-  (remoteServo "media/collections")
-  # (remoteServo "media/datasets")
-  (remoteServo "media/games")
-  (remoteServo "media/Music")
-  (remoteServo "media/Pictures/macros")
-  (remoteServo "media/torrents")
-  (remoteServo "media/Videos")
-  (remoteServo "playground")
 ]
 

hosts/common/hardware/default.nix

@@ -1,5 +1,10 @@
-{ lib, pkgs, ... }:
+{ config, lib, pkgs, ... }:
+
 {
+  imports = [
+    ./x86_64.nix
+  ];
+
   boot.initrd.supportedFilesystems = [ "ext4" "btrfs" "ext2" "ext3" "vfat" ];
   # useful emergency utils
   boot.initrd.extraUtilsCommands = ''
@@ -39,12 +44,48 @@
   boot.loader.grub.enable = lib.mkDefault false;
   boot.loader.generic-extlinux-compatible.enable = lib.mkDefault true;
 
-  hardware.enableAllFirmware = true;  # firmware with licenses that don't allow for redistribution. fuck lawyers, fuck IP, give me the goddamn firmware.
-  # hardware.enableRedistributableFirmware = true;  # proprietary but free-to-distribute firmware (extraneous to `enableAllFirmware` option)
+  # 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

@@ -0,0 +1,15 @@
+{ 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/mime.nix

@@ -50,7 +50,7 @@ let
   localShareApplicationsPkg = (pkgs.symlinkJoin {
     name = "user-local-share-applications";
     paths = builtins.map
-      (p: builtins.toString p.package)
+      (p: "${p.package}")
       (enabledProgramsWithPackage ++ [ { package=mimeappsListPkg; } ]);
   }).overrideAttrs (orig: {
     # like normal symlinkJoin, but don't error if the path doesn't exist

hosts/common/home/xdg-dirs.nix

@@ -3,18 +3,13 @@
 {
   # XDG defines things like ~/Desktop, ~/Downloads, etc.
   # these clutter the home, so i mostly don't use them.
-  # note that several of these are not actually standardized anywhere.
-  # some are even non-conventional, like:
-  # - XDG_PHOTOS_DIR: only works because i patch e.g. megapixels
   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_PHOTOS_DIR="$HOME/Pictures/Photos"
     XDG_PICTURES_DIR="$HOME/Pictures"
     XDG_PUBLICSHARE_DIR="$HOME/.xdg/Public"
-    XDG_SCREENSHOTS_DIR="$HOME/Pictures/Screenshots"
     XDG_TEMPLATES_DIR="$HOME/.xdg/Templates"
     XDG_VIDEOS_DIR="$HOME/Videos"
   '';
@@ -22,6 +17,4 @@
   # 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";
-
-  sane.user.fs.".config/environment.d/30-user-dirs.conf".symlink.target = "../user-dirs.dirs";
 }

hosts/common/hosts.nix

@@ -2,14 +2,6 @@
 
 {
   # TODO: this should be populated per-host
-  sane.hosts.by-name."crappy" = {
-    ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMIvSQAGKqmymXIL4La9B00LPxBIqWAr5AsJxk3UQeY5";
-    ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMN0cpRAloCBOE5/2wuzgik35iNDv5KLceWMCVaa7DIQ";
-    # wg-home.pubkey = "TODO";
-    # wg-home.ip = "10.0.10.55";
-    lan-ip = "10.78.79.55";
-  };
-
   sane.hosts.by-name."desko" = {
     ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPU5GlsSfbaarMvDA20bxpSZGWviEzXGD8gtrIowc1pX";
     ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFw9NoRaYrM6LbDd3aFBc4yyBlxGQn8HjeHd/dZ3CfHk";

hosts/common/ids.nix

@@ -4,9 +4,6 @@
 { ... }:
 
 {
-  # partially supported in nixpkgs  <repo:nixos/nixpkgs:nixos/modules/misc/ids.nix>
-  sane.ids.networkmanager.uid = 57;  #< nixpkgs unofficially reserves this, to match networkmanager's gid
-
   # legacy servo users, some are inconvenient to migrate
   sane.ids.dhcpcd.gid = 991;
   sane.ids.dhcpcd.uid = 992;
@@ -21,7 +18,7 @@
   sane.ids.matrix-appservice-irc.uid = 993;
   sane.ids.matrix-appservice-irc.gid = 992;
 
-  # greetd (legacy)
+  # greetd (used by sway)
   sane.ids.greeter.uid = 999;
   sane.ids.greeter.gid = 999;
 
@@ -81,7 +78,6 @@
 
   # found on graphical hosts
   sane.ids.nm-iodine.uid = 2101;  # desko/moby/lappy
-  sane.ids.seat.gid = 2102;
 
   # found on desko host
   # from services.usbmuxd

hosts/common/net/default.nix

@@ -4,8 +4,6 @@
   imports = [
     ./dns.nix
     ./hostnames.nix
-    ./modemmanager.nix
-    ./networkmanager.nix
     ./upnp.nix
     ./vpn.nix
   ];
@@ -26,4 +24,44 @@
   # this is required separately by servo and by any `sane-vpn` users,
   # however Nix requires this be set centrally, in only one location (i.e. here)
   boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
+
+  # the default backend is "wpa_supplicant".
+  # wpa_supplicant reliably picks weak APs to connect to.
+  # see: <https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/474>
+  # iwd is an alternative that shouldn't have this problem
+  # docs:
+  # - <https://nixos.wiki/wiki/Iwd>
+  # - <https://iwd.wiki.kernel.org/networkmanager>
+  # - `man iwd.config`  for global config
+  # - `man iwd.network` for per-SSID config
+  # use `iwctl` to control
+  # networking.networkmanager.wifi.backend = "iwd";
+  # networking.wireless.iwd.enable = true;
+  # networking.wireless.iwd.settings = {
+  #   # auto-connect to a stronger network if signal drops below this value
+  #   # bedroom -> bedroom connection is -35 to -40 dBm
+  #   # bedroom -> living room connection is -60 dBm
+  #   General.RoamThreshold = "-52";  # default -70
+  #   General.RoamThreshold5G = "-52";  # default -76
+  # };
+
+  # plugins mostly add support for establishing different VPN connections.
+  # the default plugin set includes mostly proprietary VPNs:
+  # - fortisslvpn (Fortinet)
+  # - iodine (DNS tunnels)
+  # - l2tp
+  # - openconnect (Cisco Anyconnect / Juniper / ocserv)
+  # - openvpn
+  # - vpnc (Cisco VPN)
+  # - sstp
+  #
+  # i don't use these, and notably they drag in huge dependency sets and don't cross compile well.
+  # e.g. openconnect drags in webkitgtk (for SSO)!
+  networking.networkmanager.plugins = lib.mkForce [];
+
+  # keyfile.path = where networkmanager should look for connection credentials
+  networking.networkmanager.extraConfig = ''
+    [keyfile]
+    path=/var/lib/NetworkManager/system-connections
+  '';
 }

hosts/common/net/dns.nix

@@ -1,6 +1,7 @@
 # things to consider when changing these parameters:
 # - temporary VPN access (`sane-vpn up ...`)
 # - servo `ovpns` namespace (it *relies* on /etc/resolv.conf mentioning 127.0.0.53)
+# - jails: `firejail --net=br-ovpnd-us --noprofile --dns=46.227.67.134 ping 1.1.1.1`
 #
 # components:
 # - /etc/nsswitch.conf:
@@ -17,22 +18,17 @@
 #   - modern implementations hardcodes `127.0.0.53` and then systemd-resolved proxies everything (and caches).
 #
 # namespacing:
-# - each namespace may use a different /etc/resolv.conf to specify different DNS servers
-# - nscd breaks namespacing: the host nscd is unaware of the guest's /etc/resolv.conf, and so directs the guest's DNS requests to the host's servers.
-#   - this is fixed by either removing `/var/run/nscd/socket` from the namespace, or disabling nscd altogether.
-{ config, lib, ... }:
-lib.mkMerge [
+# - each namespace can use a different /etc/resolv.conf to specify different DNS servers (see `firejail --dns=...`)
+# - nscd breaks namespacing: the host nscd is unaware of the guest's /etc/resolv.conf, and so direct's the guest's DNS requests to the host's servers.
+#   - this is fixed by either `firejail --blacklist=/var/run/nscd/socket`, or disabling nscd altogether.
+{ lib, ... }:
 {
-  sane.services.trust-dns.enable = lib.mkDefault config.sane.services.trust-dns.asSystemResolver;
-  sane.services.trust-dns.asSystemResolver = lib.mkDefault true;
-}
-(lib.mkIf (!config.sane.services.trust-dns.asSystemResolver) {
   # use systemd's stub resolver.
   # /etc/resolv.conf isn't sophisticated enough to use different servers per net namespace (or link).
   # instead, running the stub resolver on a known address in the root ns lets us rewrite packets
   # in servo's ovnps namespace to use the provider's DNS resolvers.
   # a weakness is we can only query 1 NS at a time (unless we were to clone the packets?)
-  # TODO: improve trust-dns recursive resolver and then remove this
+  # TODO: rework servo's netns to use `firejail`, which is capable of spoofing /etc/resolv.conf.
   services.resolved.enable = true;  #< to disable, set ` = lib.mkForce false`, as other systemd features default to enabling `resolved`.
   # without DNSSEC:
   # - dig matrix.org => works
@@ -48,8 +44,7 @@ lib.mkMerge [
     # stub resolver (just forwards upstream) lives on 127.0.0.54
     "127.0.0.53"
   ];
-})
-{
+
   # nscd -- the Name Service Caching Daemon -- caches DNS query responses
   # in a way that's unaware of my VPN routing, so routes are frequently poor against
   # services which advertise different IPs based on geolocation.
@@ -70,4 +65,3 @@ lib.mkMerge [
   services.nscd.enable = false;
   system.nssModules = lib.mkForce [];
 }
-]

hosts/common/net/modemmanager.nix

@@ -1,78 +0,0 @@
-{ config, lib, pkgs, ... }:
-{
-  networking.modemmanager.package = pkgs.modemmanager-split.daemon.overrideAttrs (upstream: {
-    # patch to allow the dbus endpoints to be owned by networkmanager user
-    postInstall = (upstream.postInstall or "") + ''
-      substitute $out/share/dbus-1/system.d/org.freedesktop.ModemManager1.conf \
-        $out/share/dbus-1/system.d/networkmanager-org.freedesktop.ModemManager1.conf \
-        --replace-fail 'user="root"' 'group="networkmanager"'
-    '';
-  });
-
-  systemd.services.ModemManager = {
-    # aliases = [ "dbus-org.freedesktop.ModemManager1.service" ];
-    # after = [ "polkit.service" ];
-    # requires = [ "polkit.service" ];
-    wantedBy = [ "network.target" ];  #< default is `multi-user.target`, somehow it doesn't auto-start with that...
-    # path = [ "/run/current-system/sw" ];  #< so it can find `sanebox`
-
-    # serviceConfig.Type = "dbus";
-    # serviceConfig.BusName = "org.freedesktop.ModemManager1";
-
-    # only if started with `--debug` does mmcli let us issue AT commands like
-    # `mmcli --modem any --command=<AT_CMD>`
-    serviceConfig.ExecStart = [
-      ""  # first blank line is to clear the upstream `ExecStart` field.
-      "${lib.getExe' config.networking.modemmanager.package "ModemManager"} --debug"
-    ];
-    # --debug sets DEBUG level logging: so reset
-    serviceConfig.ExecStartPost = "${lib.getExe config.sane.programs.mmcli.package} --set-logging=INFO";
-
-    # v this is what upstream ships
-    # serviceConfig.Restart = "on-abort";
-    # serviceConfig.StandardError = "null";
-    # serviceConfig.CapabilityBoundingSet = "CAP_SYS_ADMIN CAP_NET_ADMIN";
-    # serviceConfig.ProtectSystem = true;  # makes empty: /boot, /usr
-    # serviceConfig.ProtectHome = true;  # makes empty: /home, /root, /run/user
-    # serviceConfig.PrivateTmp = true;
-    # serviceConfig.RestrictAddressFamilies = "AF_NETLINK AF_UNIX AF_QIPCRTR";
-    # serviceConfig.NoNewPrivileges = true;
-
-    serviceConfig.CapabilityBoundingSet = [ "CAP_NET_ADMIN" ];  #< TODO: make sure this is *really* taking effect, and isn't supplemental to upstream's `CAP_SYS_ADMIN` setting
-    serviceConfig.LockPersonality = true;
-    # serviceConfig.PrivateUsers = true;  #< untried, not likely to work since it needs capabilities
-    serviceConfig.PrivateTmp = true;
-    serviceConfig.ProtectClock = true;  # syscall filter to prevent changing the RTC
-    serviceConfig.ProtectControlGroups = true;
-    serviceConfig.ProtectHome = true;  # makes empty: /home, /root, /run/user
-    serviceConfig.ProtectHostname = true;  # prevents changing hostname
-    serviceConfig.ProtectKernelLogs = true;  # disable /proc/kmsg, /dev/kmsg
-    serviceConfig.ProtectKernelModules = true;  # syscall filter to prevent module calls
-    serviceConfig.ProtectKernelTunables = true;
-    serviceConfig.ProtectSystem = "strict";  # makes read-only all but /dev, /proc, /sys
-    serviceConfig.RestrictAddressFamilies = [
-      "AF_NETLINK"
-      "AF_QIPCRTR"
-      "AF_UNIX"
-    ];
-    serviceConfig.RestrictSUIDSGID = true;
-    serviceConfig.SystemCallArchitectures = "native";  # prevents e.g. aarch64 syscalls in the event that the kernel is multi-architecture.
-
-    # from earlier `landlock` sandboxing, i know it needs these directories:
-    # - # "/"
-    # - "/dev" #v modem-power + net are not enough
-    # - # "/dev/modem-power"
-    # - # "/dev/net"
-    # - "/proc"
-    # - # /run  #v can likely be reduced more
-    # - "/run/dbus"
-    # - "/run/NetworkManager"
-    # - "/run/resolvconf"
-    # - "/run/systemd"
-    # - "/run/udev"
-    # - "/sys"
-  };
-
-  # so that ModemManager can discover when the modem appears
-  # services.udev.packages = lib.mkIf cfg.enabled [ cfg.package ];
-}

hosts/common/net/networkmanager.nix

@@ -1,268 +0,0 @@
-{ config, pkgs, ... }:
-let
-  # networkmanager = pkgs.networkmanager;
-  networkmanager = pkgs.networkmanager.overrideAttrs (upstream: {
-    src = pkgs.fetchFromGitea {
-      domain = "git.uninsane.org";
-      owner = "colin";
-      repo = "NetworkManager";
-      # patched to fix polkit permissions (with `nmcli`) when NetworkManager runs as user networkmanager
-      rev = "dev-sane-1.48.0";
-      hash = "sha256-vGmOKtwVItxjYioZJlb1og3K6u9s4rcmDnjAPLBC3ao=";
-    };
-    # patches = [];
-  });
-  # split the package into `daemon` and `nmcli` outputs, because the networkmanager *service*
-  # doesn't need `nmcli`/`nmtui` tooling
-  networkmanager-split = pkgs.networkmanager-split.override { inherit networkmanager; };
-in {
-  networking.networkmanager.enable = true;
-  # plugins mostly add support for establishing different VPN connections.
-  # the default plugin set includes mostly proprietary VPNs:
-  # - fortisslvpn (Fortinet)
-  # - iodine (DNS tunnels)
-  # - l2tp
-  # - openconnect (Cisco Anyconnect / Juniper / ocserv)
-  # - openvpn
-  # - vpnc (Cisco VPN)
-  # - sstp
-  #
-  # i don't use these, and notably they drag in huge dependency sets and don't cross compile well.
-  # e.g. openconnect drags in webkitgtk (for SSO)!
-  # networking.networkmanager.plugins = lib.mkForce [];
-  networking.networkmanager.enableDefaultPlugins = false;
-
-  networking.networkmanager.package = networkmanager-split.daemon.overrideAttrs (upstream: {
-    # postPatch = (upstream.postPatch or "") + ''
-    #   substituteInPlace src/{core/org.freedesktop.NetworkManager,nm-dispatcher/nm-dispatcher}.conf --replace-fail \
-    #     'user="root"' 'user="networkmanager"'
-    # '';
-    postInstall = (upstream.postInstall or "") + ''
-      # allow the bus to owned by either root or networkmanager users
-      # use the group here, that way ordinary users can be elevated to control networkmanager
-      # (via e.g. `nmcli`)
-      for f in org.freedesktop.NetworkManager.conf nm-dispatcher.conf ; do
-        substitute $out/share/dbus-1/system.d/$f \
-          $out/share/dbus-1/system.d/networkmanager-$f \
-          --replace-fail 'user="root"' 'group="networkmanager"'
-      done
-
-      # remove unused services to prevent any unexpected interactions
-      rm $out/etc/systemd/system/{nm-cloud-setup.service,nm-cloud-setup.timer,nm-priv-helper.service}
-    '';
-  });
-
-  # fixup the services to run as `networkmanager` and with less permissions
-  systemd.services.NetworkManager = {
-    serviceConfig.RuntimeDirectory = "NetworkManager";  #< tells systemd to create /run/NetworkManager
-    # serviceConfig.StateDirectory = "NetworkManager";  #< tells systemd to create /var/lib/NetworkManager
-    serviceConfig.User = "networkmanager";
-    serviceConfig.Group = "networkmanager";
-    serviceConfig.AmbientCapabilities = [
-      # "CAP_DAC_OVERRIDE"
-      "CAP_NET_ADMIN"
-      "CAP_NET_RAW"  #< required, else `libndp: ndp_sock_open: Failed to create ICMP6 socket.`
-      "CAP_NET_BIND_SERVICE"  #< this *does* seem to be necessary, though i don't understand why. DHCP?
-      # "CAP_SYS_MODULE"
-      # "CAP_AUDIT_WRITE"  #< allow writing to the audit log (optional)
-      # "CAP_KILL"
-    ];
-    serviceConfig.LockPersonality = true;
-    serviceConfig.NoNewPrivileges = true;
-    serviceConfig.PrivateDevices = true;  # remount /dev with just the basics, syscall filter to block @raw-io
-    serviceConfig.PrivateIPC = true;
-    serviceConfig.PrivateTmp = true;
-    # serviceConfig.PrivateUsers = true;  #< BREAKS NetworkManager (presumably, it causes a new user namespace, breaking CAP_NET_ADMIN & others).  "platform-linux: do-change-link[3]: failure 1 (Operation not permitted)"
-    serviceConfig.ProtectClock = true;  # syscall filter to prevent changing the RTC
-    serviceConfig.ProtectControlGroups = true;
-    serviceConfig.ProtectHome = true;  # makes empty: /home, /root, /run/user
-    serviceConfig.ProtectHostname = true;  # probably not upstreamable: prevents changing hostname
-    serviceConfig.ProtectKernelLogs = true;  # disable /proc/kmsg, /dev/kmsg
-    serviceConfig.ProtectKernelModules = true;  # syscall filter to prevent module calls (probably not upstreamable: NM will want to load modules like `ppp`)
-    serviceConfig.ProtectKernelTunables = true;  # but NM might need to write /proc/sys/net/...
-    serviceConfig.ProtectSystem = "strict";  # makes read-only: all but /dev, /proc, /sys.
-    serviceConfig.RestrictAddressFamilies = [
-      "AF_INET"
-      "AF_INET6"
-      "AF_NETLINK"  # breaks near DHCP without this
-      "AF_PACKET"  # for DHCP
-      "AF_UNIX"
-      # AF_ALG ?
-      # AF_BLUETOOTH ?
-      # AF_BRIDGE ?
-    ];
-    serviceConfig.RestrictSUIDSGID = true;
-    serviceConfig.SystemCallArchitectures = "native";  # prevents e.g. aarch64 syscalls in the event that the kernel is multi-architecture.
-    # from earlier `landlock` sandboxing, i know it needs these directories:
-    # - "/proc/net"
-    # - "/proc/sys/net"
-    # - "/run/NetworkManager"
-    # - "/run/systemd"  # for trust-dns-nmhook
-    # - "/run/udev"
-    # - # "/run/wg-home.priv"
-    # - "/sys/class"
-    # - "/sys/devices"
-    # - "/var/lib/NetworkManager"
-    # - "/var/lib/trust-dns"  #< for trust-dns-nmhook
-    # - "/run/systemd"
-  };
-
-  systemd.services.NetworkManager-wait-online = {
-    serviceConfig.User = "networkmanager";
-    serviceConfig.Group = "networkmanager";
-  };
-
-  # fix NetworkManager-dispatcher to actually run as a daemon,
-  # and sandbox it a bit
-  systemd.services.NetworkManager-dispatcher = {
-    after = [ "trust-dns-localhost.service" ];  #< so that /var/lib/trust-dns will exist
-    # serviceConfig.ExecStart = [
-    #   ""  # first blank line is to clear the upstream `ExecStart` field.
-    #   "${cfg.package}/libexec/nm-dispatcher --persist"  # --persist is needed for it to actually run as a daemon
-    # ];
-    # serviceConfig.Restart = "always";
-    # serviceConfig.RestartSec = "1s";
-
-    # serviceConfig.DynamicUser = true;  #< not possible, else we lose group perms (so can't write to `trust-dns`'s files in the nm hook)
-    serviceConfig.User = "networkmanager";  # TODO: should arguably use `DynamicUser`
-    serviceConfig.Group = "networkmanager";
-    serviceConfig.LockPersonality = true;
-    serviceConfig.NoNewPrivileges = true;
-    serviceConfig.PrivateDevices = true;  # remount /dev with just the basics, syscall filter to block @raw-io
-    serviceConfig.PrivateIPC = true;
-    serviceConfig.PrivateTmp = true;
-    serviceConfig.PrivateUsers = true;
-    serviceConfig.ProtectClock = true;  # syscall filter to prevent changing the RTC
-    serviceConfig.ProtectControlGroups = true;
-    serviceConfig.ProtectHome = true;  # makes empty: /home, /root, /run/user
-    serviceConfig.ProtectHostname = true;  # probably not upstreamable: prevents changing hostname
-    serviceConfig.ProtectKernelLogs = true;  # disable /proc/kmsg, /dev/kmsg
-    serviceConfig.ProtectKernelModules = true;  # syscall filter to prevent module calls
-    serviceConfig.ProtectKernelTunables = true;
-    serviceConfig.ProtectSystem = "full";  # makes read-only: /boot, /etc/, /usr. `strict` isn't possible due to trust-dns hook
-    serviceConfig.RestrictAddressFamilies = [
-      "AF_UNIX"  # required, probably for dbus or systemd connectivity
-    ];
-    serviceConfig.RestrictSUIDSGID = true;
-    serviceConfig.SystemCallArchitectures = "native";  # prevents e.g. aarch64 syscalls in the event that the kernel is multi-architecture.
-  };
-
-  # harden wpa_supplicant (used by NetworkManager)
-  systemd.services.wpa_supplicant = {
-    serviceConfig.User = "networkmanager";
-    serviceConfig.Group = "networkmanager";
-    serviceConfig.AmbientCapabilities = [
-      "CAP_NET_ADMIN"
-      "CAP_NET_RAW"
-    ];
-    serviceConfig.LockPersonality = true;
-    serviceConfig.NoNewPrivileges = true;
-    # serviceConfig.PrivateDevices = true;  # untried, not likely to work. remount /dev with just the basics, syscall filter to block @raw-io
-    serviceConfig.PrivateIPC = true;
-    serviceConfig.PrivateTmp = true;
-    # serviceConfig.PrivateUsers = true;  #< untried, not likely to work
-    serviceConfig.ProtectClock = true;  # syscall filter to prevent changing the RTC
-    serviceConfig.ProtectControlGroups = true;
-    serviceConfig.ProtectHome = true;  # makes empty: /home, /root, /run/user
-    serviceConfig.ProtectHostname = true;  # prevents changing hostname
-    serviceConfig.ProtectKernelLogs = true;  # disable /proc/kmsg, /dev/kmsg
-    serviceConfig.ProtectKernelModules = true;  # syscall filter to prevent module calls
-    serviceConfig.ProtectKernelTunables = true;  #< N.B.: i think this makes certain /proc writes fail
-    serviceConfig.ProtectSystem = "strict";  # makes read-only: all but /dev, /proc, /sys.
-    serviceConfig.RestrictAddressFamilies = [
-      "AF_INET"  #< required
-      "AF_INET6"
-      "AF_NETLINK"  #< required
-      "AF_PACKET"  #< required
-      "AF_UNIX"  #< required (wpa_supplicant wants to use dbus)
-    ];
-    serviceConfig.RestrictSUIDSGID = true;
-    serviceConfig.SystemCallArchitectures = "native";  # prevents e.g. aarch64 syscalls in the event that the kernel is multi-architecture.
-
-    # from earlier `landlock` sandboxing, i know it needs only these paths:
-    # - "/dev/net"
-    # - "/dev/rfkill"
-    # - "/proc/sys/net"
-    # - "/sys/class/net"
-    # - "/sys/devices"
-    # - "/run/systemd"
-  };
-
-  networking.networkmanager.settings = {
-    # keyfile.path = where networkmanager should look for connection credentials
-    keyfile.path = "/var/lib/NetworkManager/system-connections";
-
-    # wifi.backend = "wpa_supplicant";  #< default
-    # wifi.scan-rand-mac-address = true;  #< default
-
-    # logging.audit = false;  #< default
-    logging.level = "INFO";
-
-    # main.dhcp = "internal";  #< default
-    main.dns = if config.services.resolved.enable then
-      "systemd-resolved"
-    else if config.sane.services.trust-dns.enable && config.sane.services.trust-dns.asSystemResolver then
-      "none"
-    else
-      "internal"
-    ;
-    main.systemd-resolved = false;
-  };
-  environment.etc."NetworkManager/system-connections".source = "/var/lib/NetworkManager/system-connections";
-
-  # the default backend is "wpa_supplicant".
-  # wpa_supplicant reliably picks weak APs to connect to.
-  # see: <https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/474>
-  # iwd is an alternative that shouldn't have this problem
-  # docs:
-  # - <https://nixos.wiki/wiki/Iwd>
-  # - <https://iwd.wiki.kernel.org/networkmanager>
-  # - `man iwd.config`  for global config
-  # - `man iwd.network` for per-SSID config
-  # use `iwctl` to control
-  # networking.networkmanager.wifi.backend = "iwd";
-  # networking.wireless.iwd.enable = true;
-  # networking.wireless.iwd.settings = {
-  #   # auto-connect to a stronger network if signal drops below this value
-  #   # bedroom -> bedroom connection is -35 to -40 dBm
-  #   # bedroom -> living room connection is -60 dBm
-  #   General.RoamThreshold = "-52";  # default -70
-  #   General.RoamThreshold5G = "-52";  # default -76
-  # };
-
-  # allow networkmanager to control systemd-resolved,
-  # which it needs to do to apply new DNS settings when using systemd-resolved.
-  security.polkit.extraConfig = ''
-    polkit.addRule(function(action, subject) {
-      if (subject.isInGroup("networkmanager") && action.id.indexOf("org.freedesktop.resolve1.") == 0) {
-        return polkit.Result.YES;
-      }
-    });
-  '';
-
-  users.users.networkmanager = {
-    isSystemUser = true;
-    group = "networkmanager";
-    extraGroups = [ "trust-dns" ];
-  };
-
-  # there is, unfortunately, no proper interface by which to plumb wpa_supplicant into the NixOS service, except by overlay.
-  nixpkgs.overlays = [(self: super: {
-    wpa_supplicant = super.wpa_supplicant.overrideAttrs (upstream: {
-      # postPatch = (upstream.postPatch or "") + ''
-      #   substituteInPlace wpa_supplicant/dbus/dbus-wpa_supplicant.conf --replace-fail \
-      #     'user="root"' 'user="networkmanager"'
-      # '';
-      postInstall = (upstream.postInstall or "") + ''
-        substitute $out/share/dbus-1/system.d/dbus-wpa_supplicant.conf \
-          $out/share/dbus-1/system.d/networkmanager-wpa_supplicant.conf \
-          --replace-fail 'user="root"' 'group="networkmanager"'
-      '';
-
-      postFixup = (upstream.postFixup or "") + ''
-        # remove unused services to avoid unexpected interactions
-        rm $out/etc/systemd/system/{wpa_supplicant-nl80211@,wpa_supplicant-wired@,wpa_supplicant@}.service
-      '';
-    });
-  })];
-}

hosts/common/net/vpn.nix

@@ -7,62 +7,50 @@
 
 { config, lib, pkgs, ... }:
 let
-  # N.B.: OVPN issues each key (i.e. device) a different IP (addrV4), and requires you use it.
-  # the IP it issues can be used to connect to any of their VPNs.
-  # effectively the IP and key map 1-to-1.
-  # it seems to still be possible to keep two active tunnels on one device, using the same key/IP address, though.
-  def-ovpn = name: { endpoint, publicKey, id }: let
-    inherit (config.sane.ovpn) addrV4;
-  in {
-    sane.vpn."ovpnd-${name}" = lib.mkIf (addrV4 != null) {
-      inherit addrV4 endpoint publicKey id;
-      privateKeyFile = config.sops.secrets."ovpn_privkey".path;
+  def-ovpn = name: { endpoint, publicKey, addrV4, id }: {
+    sane.vpn."ovpnd-${name}" = {
+      inherit endpoint publicKey addrV4 id;
+      privateKeyFile = config.sops.secrets."wg/ovpnd_${name}_privkey".path;
       dns = [
         "46.227.67.134"
         "192.165.9.158"
-        # "2a07:a880:4601:10f0:cd45::1"
-        # "2001:67c:750:1:cafe:cd45::1"
       ];
     };
 
-    sops.secrets."ovpn_privkey" = lib.mkIf (addrV4 != null) {
+    sops.secrets."wg/ovpnd_${name}_privkey" = {
       # needs to be readable by systemd-network or else it says "Ignoring network device" and doesn't expose it to networkctl.
       owner = "systemd-network";
     };
   };
-in {
-  options = with lib; {
-    sane.ovpn.addrV4 = mkOption {
-      type = types.nullOr types.str;
-      default = null;
-      description = ''
-        ovpn issues one IP address per device.
-        set `null` to disable OVPN for this host.
-      '';
-    };
-  };
-
-  config = lib.mkMerge [
+in lib.mkMerge [
   (def-ovpn "us" {
     endpoint = "vpn31.prd.losangeles.ovpn.com:9929";
     publicKey = "VW6bEWMOlOneta1bf6YFE25N/oMGh1E1UFBCfyggd0k=";
     id = 1;
+    addrV4 = "172.27.237.218";
+    # addrV6 = "fd00:0000:1337:cafe:1111:1111:ab00:4c8f";
   })
+  # TODO: us-atl disabled until i can give it a different link-local address and wireguard key than us-mi
+  # (def-ovpn "us-atl" {
+  #   endpoint = "vpn18.prd.atlanta.ovpn.com:9929";
+  #   publicKey = "Dpg/4v5s9u0YbrXukfrMpkA+XQqKIFpf8ZFgyw0IkE0=";
+  #   address = [
+  #     "172.21.182.178/32"
+  #     "fd00:0000:1337:cafe:1111:1111:cfcb:27e3/128"
+  #   ];
+  # })
   (def-ovpn "us-mi" {
     endpoint = "vpn34.prd.miami.ovpn.com:9929";
     publicKey = "VtJz2irbu8mdkIQvzlsYhU+k9d55or9mx4A2a14t0V0=";
     id = 2;
+    addrV4 = "172.21.182.178";
+    # addrV6 = "fd00:0000:1337:cafe:1111:1111:cfcb:27e3";
   })
   (def-ovpn "ukr" {
     endpoint = "vpn96.prd.kyiv.ovpn.com:9929";
     publicKey = "CjZcXDxaaKpW8b5As1EcNbI6+42A6BjWahwXDCwfVFg=";
     id = 3;
+    addrV4 = "172.18.180.159";
+    # addrV6 = "fd00:0000:1337:cafe:1111:1111:ec5c:add3";
   })
-    # TODO: us-atl disabled until i need it again, i guess.
-    # (def-ovpn "us-atl" {
-    #   endpoint = "vpn18.prd.atlanta.ovpn.com:9929";
-    #   publicKey = "Dpg/4v5s9u0YbrXukfrMpkA+XQqKIFpf8ZFgyw0IkE0=";
-    #   id = 4;
-    # })
-  ];
-}
+]

hosts/common/nix/default.nix

@@ -53,26 +53,22 @@
 
   # allow `nix-shell` (and probably nix-index?) to locate our patched and custom packages.
   # this is actually a no-op, and the real action happens in assigning `nix.settings.nix-path`.
-  nix.nixPath = (lib.optionals (config.sane.maxBuildCost >= 2) [
+  nix.nixPath = (lib.optionals config.sane.enableSlowPrograms [
     "nixpkgs=${pkgs.path}"
   ]) ++ [
     # note the import starts at repo root: this allows `./overlay/default.nix` to access the stuff at the root
     # "nixpkgs-overlays=${../../..}/hosts/common/nix-path/overlay"
     # as long as my system itself doesn't rely on NIXPKGS at runtime, we can point the overlays to git
-    # to avoid `switch`ing so much during development.
-    # TODO: it would be nice to remove this someday!
-    # it's an impurity that touches way more than i need and tends to cause hard-to-debug eval issues
-    # when it goes wrong. should i port my `nix-shell` scripts to something more tailored to my uses
-    # and then delete `nixpkgs-overlays`?
-    "nixpkgs-overlays=/home/colin/dev/nixos/integrations/nixpkgs/nixpkgs-overlays.nix"
+    # to avoid switching so much during development
+    "nixpkgs-overlays=/home/colin/dev/nixos/hosts/common/nix/overlay"
   ];
 
   # ensure new deployments have a source of this repo with which they can bootstrap.
   # this however changes on every commit and can be slow to copy for e.g. `moby`.
-  environment.etc."nixos" = lib.mkIf (config.sane.maxBuildCost >= 3) {
-    source = pkgs.sane-nix-files;
+  environment.etc."nixos" = lib.mkIf config.sane.enableSlowPrograms {
+    source = ../../..;
   };
-  environment.etc."nix/registry.json" = lib.mkIf (config.sane.maxBuildCost < 3) {
+  environment.etc."nix/registry.json" = lib.mkIf (!config.sane.enableSlowPrograms) {
     enable = false;
   };
 

hosts/common/nix/overlay/default.nix

@@ -0,0 +1,4 @@
+# XXX: NIX_PATH=...:nixpkgs-overlays=... will import every overlay in the directory
+# so we prefer to give it a directory with just this *one* overlay, otherwise it imports conflicting overlays
+# and gets stuck in a loop until it OOMs
+import ../../../../overlays/all.nix

hosts/common/polyunfill.nix

@@ -1,127 +1,7 @@
 # strictly *decrease* the scope of the default nixos installation/config
 
-{ lib, pkgs, ... }:
-let
-  suidlessPam = pkgs.pam.overrideAttrs (upstream: {
-    # nixpkgs' pam hardcodes unix_chkpwd path to the /run/wrappers one,
-    # but i don't want the wrapper, so undo that.
-    # ideally i would patch this via an overlay, but pam is in the bootstrap so that forces a full rebuild.
-    # TODO: add a `package` option to the nixos' pam module and substitute it that way.
-    postPatch = (if upstream.postPatch != null then upstream.postPatch else "") + ''
-      substituteInPlace modules/pam_unix/Makefile.am --replace-fail \
-        "/run/wrappers/bin/unix_chkpwd" "$out/bin/unix_chkpwd"
-    '';
-  });
-in
+{ lib, ... }:
 {
-  # remove a few items from /run/wrappers we don't need.
-  options.security.wrappers = lib.mkOption {
-    apply = lib.filterAttrs (name: _: !(builtins.elem name [
-      # from <repo:nixos/nixpkgs:nixos/modules/security/polkit.nix>
-      "pkexec"
-      "polkit-agent-helper-1"  #< used by systemd; without this you'll have to `sudo systemctl daemon-reload` instead of unauth'd `systemctl daemon-reload`
-      # from <repo:nixos/nixpkgs:nixos/modules/services/system/dbus.nix>
-      "dbus-daemon-launch-helper"
-      # from <repo:nixos/nixpkgs:nixos/modules/security/wrappers/default.nix>
-      "fusermount"  #< only needed if you want to mount entries declared in /etc/fstab or mtab as unprivileged user
-      "fusermount3"
-      "mount"  #< only needed if you want to mount entries declared in /etc/fstab or mtab as unprivileged user
-      "umount"
-      # from <repo:nixos/nixpkgs:nixos/modules/programs/shadow.nix>
-      "newgidmap"
-      "newgrp"
-      "newuidmap"
-      "sg"
-      "su"
-      # from: <repo:nixos/nixpkgs:nixos/modules/security/pam.nix>
-      # requires associated `pam` patch to not hardcode unix_chkpwd path
-      "unix_chkpwd"
-    ]));
-  };
-  options.security.pam.services = lib.mkOption {
-    apply = services: let
-      filtered = lib.filterAttrs (name: _: !(builtins.elem name [
-        # from <repo:nixos/nixpkgs:nixos/modules/security/pam.nix>
-        "i3lock"
-        "i3lock-color"
-        "vlock"
-        "xlock"
-        "xscreensaver"
-        "runuser"
-        "runuser-l"
-        # from ??
-        "chfn"
-        "chpasswd"
-        "chsh"
-        "groupadd"
-        "groupdel"
-        "groupmems"
-        "groupmod"
-        "useradd"
-        "userdel"
-        "usermod"
-        # from <repo:nixos/nixpkgs:nixos/modules/system/boot/systemd/user.nix>
-        "systemd-user"  #< N.B.: this causes the `systemd --user` service manager to not be started!
-      ])) services;
-    in lib.mapAttrs (_serviceName: service: service // {
-      # replace references with the old pam_unix, which calls into /run/wrappers/bin/unix_chkpwd,
-      # with a pam_unix that calls into unix_chkpwd via the nix store.
-      # TODO: use `security.pam.package` instead once <https://github.com/NixOS/nixpkgs/pull/314791> lands.
-      text = lib.replaceStrings [" pam_unix.so" ] [ " ${suidlessPam}/lib/security/pam_unix.so" ] service.text;
-    }) filtered;
-  };
-
-  options.environment.systemPackages = lib.mkOption {
-    # see: <repo:nixos/nixpkgs:nixos/modules/config/system-path.nix>
-    # it's 31 "requiredPackages", with no explanation of why they're "required"...
-    # most of these can be safely removed without breaking the *boot*,
-    # but some core system services DO implicitly depend on them.
-    # TODO: see which more of these i can remove (or shadow/sandbox)
-    apply = let
-      requiredPackages = builtins.map (pkg: lib.setPrio ((pkg.meta.priority or 5) + 3) pkg) [
-        # pkgs.acl
-        # pkgs.attr
-        # pkgs.bashInteractive
-        # pkgs.bzip2
-        # pkgs.coreutils-full
-        # pkgs.cpio
-        # pkgs.curl
-        # pkgs.diffutils
-        # pkgs.findutils
-        # pkgs.gawk
-        # pkgs.stdenv.cc.libc
-        # pkgs.getent
-        # pkgs.getconf
-        # pkgs.gnugrep
-        # pkgs.gnupatch
-        # pkgs.gnused
-        # pkgs.gnutar
-        # pkgs.gzip
-        # pkgs.xz
-        pkgs.less
-        # pkgs.libcap  #< implicitly required by NetworkManager/wpa_supplicant!
-        # pkgs.ncurses
-        pkgs.netcat
-        # config.programs.ssh.package
-        # pkgs.mkpasswd
-        pkgs.procps
-        # pkgs.su
-        # pkgs.time
-        # pkgs.util-linux
-        # pkgs.which
-        # pkgs.zstd
-      ];
-    in lib.filter (p: ! builtins.elem p requiredPackages);
-  };
-
-  options.system.fsPackages = lib.mkOption {
-    # <repo:nixos/nixpkgs:nixos/modules/tasks/filesystems/vfat.nix>  adds `mtools` and `dosfstools`
-    # dosfstools actually makes its way into the initrd (`fsck.vfat`).
-    # mtools is like "MS-DOS for Linux", ancient functionality i'll never use.
-    apply = lib.filter (p: p != pkgs.mtools);
-  };
-
-  config = {
   # disable non-required packages like nano, perl, rsync, strace
   environment.defaultPackages = [];
 
@@ -184,33 +64,4 @@ in
     # pkgs.udisks
     # pkgs.wpa_supplicant
   ];
-
-    # systemd by default forces shitty defaults for e.g. /tmp/.X11-unix.
-    # nixos propagates those in: <nixos/modules/system/boot/systemd/tmpfiles.nix>
-    # by overwriting this with an empty file, we can effectively remove it.
-    environment.etc."tmpfiles.d/x11.conf".text = "# (removed by Colin)";
-
-    # see: <nixos/modules/tasks/swraid.nix>
-    # it was enabled by default before 23.11
-    boot.swraid.enable = lib.mkDefault false;
-
-    # see: <nixos/modules/tasks/bcache.nix>
-    # these allow you to use the Linux block cache (cool! doesn't need to be a default though)
-    boot.bcache.enable = lib.mkDefault false;
-
-    # see: <nixos/modules/system/boot/kernel.nix>
-    # by default, it adds to boot.initrd.availableKernelModules:
-    # - SATA: "ahci" "sata_nv" "sata_via" "sata_sis" "sata_uli" "ata_piix" "pata_marvell"
-    # - "nvme"
-    # - scsi: "sd_mod" "sr_mod"
-    # - SD/eMMC: "mmc_block"
-    # - USB keyboards: "uhci_hcd" "ehci_hcd" "ehci_pci" "ohci_hcd" "ohci_pci" "xhci_hcd" "xhci_pci" "usbhid" "hid_generic" "hid_lenovo" "hid_apple" "hid_roccat" "hid_logitech_hidpp" "hid_logitech_dj" "hid_microsoft" "hid_cherry" "hid_corsair"
-    # - LVM: "dm_mod"
-    # - on x86 only: more keyboard stuff: "pcips2" "atkbd" "i8042"
-
-    boot.initrd.includeDefaultModules = lib.mkDefault false;
-
-    # see: <repo:nixos/nixpkgs:nixos/modules/virtualisation/nixos-containers.nix>
-    boot.enableContainers = lib.mkDefault false;
-  };
 }

hosts/common/programs/abaddon.nix

@@ -87,8 +87,13 @@ in
 
     services.abaddon = {
       description = "unofficial Discord chat client";
-      partOf = lib.mkIf cfg.config.autostart [ "graphical-session" ];
-      command = "abaddon";
+      wantedBy = lib.mkIf cfg.config.autostart [ "graphical-session.target" ];
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/abaddon";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "20s";
+      };
     };
   };
 }

hosts/common/programs/alsa-ucm-conf/default.nix

@@ -15,33 +15,39 @@ in
     };
 
     # upstream alsa ships with PinePhone audio configs, but they don't actually produce sound.
-    # - still true as of 2024-05-26
-    # - see: <https://github.com/alsa-project/alsa-ucm-conf/pull/134>
+    # see: <https://github.com/alsa-project/alsa-ucm-conf/pull/134>
+    # these audio files come from some revision of:
+    # - <https://gitlab.manjaro.org/manjaro-arm/packages/community/phosh/alsa-ucm-pinephone>
     #
-    # we can substitute working UCM conf in two ways:
-    # 1. nixpkgs' override for the `alsa-ucm-conf` package
-    #   - that forces a rebuild of ~500 packages (including webkitgtk).
-    # 2. set ALSA_CONFIG_UCM2 = /path/to/ucm2 in the relevant places
-    #   - e.g. pulsewire service.
-    #   - easy to miss places, though.
+    # alternative to patching is to plumb `ALSA_CONFIG_UCM2 = "${./ucm2}"` environment variable into the relevant places
+    # e.g. `systemd.services.pulseaudio.environment`.
+    # that leaves more opportunity for gaps (i.e. missing a service),
+    # on the other hand this method causes about 500 packages to be rebuilt (including qt5 and webkitgtk).
     #
-    # alsa-ucm-pinephone-manjaro (2024-05-26):
-    # - headphones work
-    # - "internal earpiece" works
-    # - "internal speaker" is silent (maybe hardware issue)
-    # - 3.5mm connection is flapping when playing to my car, which eventually breaks audio and requires restarting wireplumber
-    # packageUnwrapped = pkgs.alsa-ucm-pinephone-manjaro.override {
-    #   inherit (cfg.config) preferEarpiece;
-    # };
-    # alsa-ucm-pinephone-pmos (2024-05-26):
-    # - headphones work
-    # - "internal earpiece" works
-    # - "internal speaker" is silent (maybe hardware issue)
-    packageUnwrapped = pkgs.alsa-ucm-pinephone-pmos.override {
-      inherit (cfg.config) preferEarpiece;
-    };
+    # note that with these files, the following audio device support:
+    # - headphones work.
+    # - "internal earpiece" works.
+    # - "internal speaker" doesn't work (but that's probably because i broke the ribbon cable)
+    # - "analog output" doesn't work.
+    packageUnwrapped = pkgs.alsa-ucm-conf.overrideAttrs (upstream: {
+      postPatch = (upstream.postPatch or "") + ''
+        cp ${./ucm2/PinePhone}/* ucm2/Allwinner/A64/PinePhone/
 
-    sandbox.enable = false;  #< only provides $out/share/alsa
+        # fix the self-contained ucm files i source from to have correct path within the alsa-ucm-conf source tree
+        substituteInPlace ucm2/Allwinner/A64/PinePhone/PinePhone.conf \
+          --replace 'HiFi.conf' '/Allwinner/A64/PinePhone/HiFi.conf'
+        substituteInPlace ucm2/Allwinner/A64/PinePhone/PinePhone.conf \
+        --replace 'VoiceCall.conf' '/Allwinner/A64/PinePhone/VoiceCall.conf'
+      '' + lib.optionalString cfg.config.preferEarpiece ''
+        # decrease the priority of the internal speaker so that sounds are routed
+        # to the earpiece by default.
+        # this is just personal preference.
+        substituteInPlace ucm2/Allwinner/A64/PinePhone/* \
+          --replace 'PlaybackPriority 300' 'PlaybackPriority 100'
+      '';
+    });
+
+    sandbox.enable = false;  #< only provides #out/share/alsa
 
     # alsa-lib package only looks in its $out/share/alsa to find runtime config data, by default.
     # but ALSA_CONFIG_UCM2 is an env var that can override that.

hosts/common/programs/animatch.nix

@@ -30,8 +30,6 @@
       });
     };
 
-    buildCost = 1;
-
     sandbox.method = "bwrap";
     sandbox.whitelistWayland = true;
 

hosts/common/programs/assorted.nix

@@ -34,7 +34,6 @@ in
     ];
 
     sysadminUtils = declPackageSet [
-      "ausyscall"
       "bridge-utils"  # for brctl; debug linux "bridge" inet devices
       "btrfs-progs"
       "cacert.unbundled"  # some services require unbundled /etc/ssl/certs
@@ -44,13 +43,11 @@ in
       "dtc"  # device tree [de]compiler
       "e2fsprogs"  # resize2fs
       "efibootmgr"
-      "errno"
       "ethtool"
       "fatresize"
       "fd"
       "file"
       "forkstat"  # monitor every spawned/forked process
-      "free"
       # "fwupd"
       "gawk"
       "gdb"  # to debug segfaults
@@ -66,29 +63,22 @@ in
       "jq"
       "killall"
       "less"
-      "lftp"
       # "libcap_ng"  # for `netcap`
       "lsof"
-      "man-pages"
-      "man-pages-posix"
       # "miniupnpc"
-      "mmcli"
       "nano"
       #  "ncdu"  # ncurses disk usage. doesn't cross compile (zig)
       "neovim"
       "netcat"
       "nethogs"
       "nmap"
-      "nmcli"
       "nvme-cli"  # nvme
       # "openssl"
       "parted"
       "pciutils"
       "powertop"
-      "ps"
       "pstree"
       "ripgrep"
-      "s6-rc"  # service manager
       "screen"
       "smartmontools"  # smartctl
       # "socat"
@@ -98,8 +88,6 @@ in
       "tree"
       "usbutils"  # lsusb
       "util-linux"  # lsblk, lscpu, etc
-      "valgrind"
-      "watch"
       "wget"
       "wirelesstools"  # iwlist
       # "xq"  # jq for XML
@@ -119,6 +107,7 @@ in
     #   - debugging?
     consoleUtils = declPackageSet [
       "alsaUtils"  # for aplay, speaker-test
+      "strings"
       # "cdrtools"
       # "clinfo"
       # "dmidecode"
@@ -133,7 +122,6 @@ in
       # "gopass"
       # "gopass-jsonapi"
       # "helix"  # text editor
-      "htop"  # needed as a user package, for ~/.config/htop
       # "libsecret"  # for managing user keyrings (secret-tool)
       # "lm_sensors"  # for sensors-detect
       # "lshw"
@@ -147,7 +135,6 @@ in
       "nmon"
       # "node2nix"
       # "oathToolkit"  # for oathtool
-      "objdump"
       # "ponymix"
       "pulsemixer"
       "python3-repl"
@@ -160,7 +147,6 @@ in
       "sops"  # for manually viewing secrets; outside `sane-secrets` (TODO: improve sane-secrets!)
       "speedtest-cli"
       # "ssh-to-age"
-      "strings"
       "sudo"
       # "tageditor"  # music tagging
       # "unar"
@@ -185,7 +171,6 @@ in
       "ffmpeg"
       "go2tv"  # cast videos to UPNP/DLNA device (i.e. tv).
       "imagemagick"
-      "sane-cast"  # cast videos to UPNP/DLNA, with compatibility
       "sox"
       "yt-dlp"
     ];
@@ -216,176 +201,6 @@ in
       # "tree-sitter"
     ];
 
-    gameApps = declPackageSet [
-      "animatch"
-      "gnome-2048"
-      "gnome.hitori"  # like sudoku
-    ];
-
-    pcGameApps = declPackageSet [
-      # "andyetitmoves" # TODO: fix build!
-      # "armagetronad"  # tron/lightcycles; WAN and LAN multiplayer
-      "celeste64"
-      # "cutemaze"      # meh: trivial maze game; qt6 and keyboard-only
-      # "cuyo"          # trivial puyo-puyo clone
-      "endless-sky"     # space merchantilism/exploration
-      # "factorio"
-      "frozen-bubble"   # WAN + LAN + 1P/2P bubble bobble
-      "hase"            # WAN worms game
-      # "hedgewars"     # WAN + LAN worms game (5~10 people online at any moment; <https://hedgewars.org>)
-      # "libremines"    # meh: trivial minesweeper; qt6
-      # "mario0"        # SMB + portal
-      # "mindustry"
-      # "minesweep-rs"  # CLI minesweeper
-      # "nethack"
-      # "osu-lazer"
-      # "pinball"       # 3d pinball; kb/mouse. old sourceforge project
-      # "powermanga"    # STYLISH space invaders derivative (keyboard-only)
-      "shattered-pixel-dungeon"  # doesn't cross compile
-      "space-cadet-pinball"  # LMB/RMB controls (bindable though. volume buttons?)
-      "steam"
-      "superTux"  # keyboard-only controls
-      "superTuxKart"  # poor FPS on pinephone
-      "tumiki-fighters" # keyboard-only
-      "vvvvvv"  # keyboard-only controls
-      # "wine"
-    ];
-
-    guiApps = declPackageSet [
-      # package sets
-      "gameApps"
-      "guiBaseApps"
-    ];
-
-    guiBaseApps = declPackageSet [
-      # "abaddon"  # discord client
-      "alacritty"  # terminal emulator
-      "calls"  # gnome calls (dialer/handler)
-      "dbus"
-      "dconf"  # required by many packages, but not well-documented :(
-      # "delfin"  # Jellyfin client
-      "dialect"  # language translation
-      "dino"  # XMPP client
-      "dissent"  # Discord client (formerly known as: gtkcord4)
-      # "emote"
-      # "evince"  # PDF viewer
-      # "flare-signal"  # gtk4 signal client
-      # "foliate"  # e-book reader
-      "fractal"  # matrix client
-      "g4music"  # local music player
-      # "gnome.cheese"
-      # "gnome-feeds"  # RSS reader (with claimed mobile support)
-      # "gnome.file-roller"
-      "gnome.geary"  # adaptive e-mail client; uses webkitgtk 4.1
-      "gnome.gnome-calculator"
-      "gnome.gnome-calendar"
-      "gnome.gnome-clocks"
-      "gnome.gnome-maps"
-      # "gnome-podcasts"
-      # "gnome.gnome-system-monitor"
-      # "gnome.gnome-terminal"  # works on phosh
-      "gnome.gnome-weather"
-      # "gnome.seahorse"  # keyring/secret manager
-      "gnome-frog"  # OCR/QR decoder
-      "gpodder"
-      "gst-device-monitor"  # for debugging audio/video
-      # "gthumb"
-      # "lemoa"  # lemmy app
-      "libcamera"  # for `cam` binary (useful for debugging cameras)
-      "libnotify"  # for notify-send; debugging
-      # "lollypop"
-      "loupe"  # image viewer
-      "mate.engrampa"  # archive manager
-      "mepo"  # maps viewer
-      "mesa-demos"  # for eglinfo, glxinfo & other testing tools
-      "mpv"
-      "networkmanagerapplet"  # for nm-connection-editor: it's better than not having any gui!
-      "ntfy-sh"  # notification service
-      # "newsflash"  # RSS viewer
-      "pavucontrol"
-      "pwvucontrol"  # pipewire version of pavu
-      # "picard"  # music tagging
-      # "libsForQt5.plasmatube"  # Youtube player
-      "signal-desktop"
-      "snapshot"  # camera app
-      "spot"  # Gnome Spotify client
-      # "sublime-music"
-      # "tdesktop"  # broken on phosh
-      # "tokodon"
-      "tuba"  # mastodon/pleroma client (stores pw in keyring)
-      "vulkan-tools"  # vulkaninfo
-      # "whalebird"  # pleroma client (Electron). input is broken on phosh.
-      "xdg-terminal-exec"
-      "zathura"  # PDF/CBZ/ePUB viewer
-    ];
-
-    handheldGuiApps = declPackageSet [
-      # "celluloid"  # mpv frontend
-      # "chatty"  # matrix/xmpp/irc client  (2023/12/29: disabled because broken cross build)
-      "cozy"  # audiobook player
-      "epiphany"  # gnome's web browser
-      # "iotas"  # note taking app
-      "komikku"
-      "koreader"
-      "megapixels"  # camera app
-      "notejot"  # note taking, e.g. shopping list
-      "planify"  # todo-tracker/planner
-      "portfolio-filemanager"
-      "tangram"  # web browser
-      "wike"  # Wikipedia Reader
-      "xarchiver"  # archiver, backup option for when engrampa UI overflows screen and is unusale (xarchiver UI fails in different ways)
-    ];
-
-    pcGuiApps = declPackageSet [
-      # package sets
-      "pcGameApps"
-      "pcTuiApps"
-      ####
-      "audacity"
-      # "blanket"  # ambient noise generator
-      "brave"  # for the integrated wallet -- as a backup
-      # "cantata"  # music player (mpd frontend)
-      # "chromium"  # chromium takes hours to build. brave is chromium-based, distributed in binary form, so prefer it.
-      # "cups"
-      "discord"  # x86-only
-      "electrum"
-      "element-desktop"
-      "firefox"
-      "font-manager"
-      # "gajim"  # XMPP client. cross build tries to import host gobject-introspection types (2023/09/01)
-      "gimp"  # broken on phosh
-      # "gnome.dconf-editor"
-      # "gnome.file-roller"
-      "gnome.gnome-disk-utility"
-      "gnome.nautilus"  # file browser
-      # "gnome.totem"  # video player, supposedly supports UPnP
-      # "handbrake"  #< TODO: fix build
-      "inkscape"
-      # "jellyfin-media-player"
-      "kdenlive"
-      # "kid3"  # audio tagging
-      "krita"
-      "libreoffice"  # TODO: replace with an office suite that uses saner packaging?
-      "losslesscut-bin"  # x86-only
-      # "makemkv"  # x86-only
-      # "monero-gui"  # x86-only
-      # "mumble"
-      # "nheko"  # Matrix chat client
-      # "nicotine-plus"  # soulseek client. before re-enabling this make sure it's properly sandboxed!
-      # "obsidian"
-      # "openscad"  # 3d modeling
-      # "rhythmbox"  # local music player
-      # "slic3r"
-      "soundconverter"
-      "spotify"  # x86-only
-      "tor-browser"  # x86-only
-      # "vlc"
-      "wireshark"  # could maybe ship the cli as sysadmin pkg
-      # "xterm"  # requires Xwayland
-      # "zecwallet-lite"  # x86-only
-      # "zulip"
-    ];
-
 
     # INDIVIDUAL PACKAGE DEFINITIONS
 
@@ -394,7 +209,6 @@ in
 
     backblaze-b2 = {};
 
-    blanket.buildCost = 1;
     blanket.sandbox.method = "bwrap";
     blanket.sandbox.whitelistAudio = true;
     # blanket.sandbox.whitelistDbus = [ "user" ];  # TODO: untested
@@ -413,6 +227,14 @@ in
     bridge-utils.sandbox.method = "bwrap";  #< bwrap, landlock: both work
     bridge-utils.sandbox.net = "all";
 
+    brightnessctl.sandbox.method = "landlock";  # also bwrap, but landlock is more responsive
+    brightnessctl.sandbox.extraPaths = [
+      "/sys/class/backlight"
+      "/sys/class/leds"
+      "/sys/devices"
+    ];
+    brightnessctl.sandbox.whitelistDbus = [ "system" ];
+
     btrfs-progs.sandbox.method = "bwrap";  #< bwrap, landlock: both work
     btrfs-progs.sandbox.autodetectCliPaths = "existing";  # e.g. `btrfs filesystem df /my/fs`
 
@@ -439,41 +261,33 @@ in
     ddrescue.sandbox.method = "landlock";  # TODO:sandbox: untested
     ddrescue.sandbox.autodetectCliPaths = "existingOrParent";
 
-    delfin.buildCost = 1;
+    # auth token, preferences
     delfin.sandbox.method = "bwrap";
     delfin.sandbox.whitelistAudio = true;
     delfin.sandbox.whitelistDbus = [ "user" ];  # else `mpris` plugin crashes the player
     delfin.sandbox.whitelistDri = true;
     delfin.sandbox.whitelistWayland = true;
     delfin.sandbox.net = "clearnet";
-    # auth token, preferences
     delfin.persist.byStore.private = [ ".config/delfin" ];
 
     dig.sandbox.method = "bwrap";
     dig.sandbox.net = "all";
 
     # creds, but also 200 MB of node modules, etc
-    discord.persist.byStore.private = [ ".config/discord" ];
-    discord.suggestedPrograms = [ "xwayland" ];
     discord.sandbox.method = "bwrap";
     discord.sandbox.wrapperType = "inplace";  #< /opt-style packaging
     discord.sandbox.whitelistAudio = true;
     discord.sandbox.whitelistDbus = [ "user" ];  # needed for xdg-open
     discord.sandbox.whitelistWayland = true;
-    discord.sandbox.whitelistX = true;
     discord.sandbox.net = "clearnet";
-    discord.sandbox.extraHomePaths = [
-      # still needs these paths despite it using the portal's file-chooser :?
-      "Pictures/cat"
-      "Pictures/Screenshots"
-      "Pictures/servo-macros"
-      "Videos/local"
-      "Videos/servo"
-      "tmp"
-    ];
+    discord.persist.byStore.private = [ ".config/discord" ];
 
     dtc.sandbox.method = "bwrap";
-    dtc.sandbox.autodetectCliPaths = "existingFile";  # TODO:sandbox: untested
+    dtc.sandbox.autodetectCliPaths = true;  # TODO:sandbox: untested
+
+    dtrx.sandbox.method = "bwrap";
+    dtrx.sandbox.whitelistPwd = true;
+    dtrx.sandbox.autodetectCliPaths = "existing";  #< for the archive
 
     duplicity = {};
 
@@ -487,13 +301,11 @@ in
 
     eg25-control = {};
 
-    electrum.buildCost = 1;
     electrum.sandbox.method = "bwrap";  # TODO:sandbox: untested
     electrum.sandbox.net = "all";  # TODO: probably want to make this run behind a VPN, always
     electrum.sandbox.whitelistWayland = true;
     electrum.persist.byStore.cryptClearOnBoot = [ ".electrum" ];  #< TODO: use XDG dirs!
 
-    endless-sky.buildCost = 1;
     endless-sky.persist.byStore.plaintext = [ ".local/share/endless-sky" ];
     endless-sky.sandbox.method = "bwrap";
     endless-sky.sandbox.whitelistAudio = true;
@@ -509,9 +321,10 @@ in
     ethtool.sandbox.capabilities = [ "net_admin" ];
 
     # eza `ls` replacement
+    # landlock is OK, only `whitelistPwd` doesn't make the intermediate symlinks traversable, so it breaks on e.g. ~/Videos/servo/Shows/foo
     # eza.sandbox.method = "landlock";
-    eza.sandbox.method = "bwrap";  #< note that bwrap causes `/proc` files to be listed differently (e.g. `eza /proc/sys/net/ipv6/conf/`)
-    eza.sandbox.autodetectCliPaths = "existing";
+    eza.sandbox.method = "bwrap";
+    eza.sandbox.autodetectCliPaths = true;
     eza.sandbox.whitelistPwd = true;
     eza.sandbox.extraHomePaths = [
       # so that e.g. `eza -l ~` can show which symlink exist
@@ -523,7 +336,7 @@ in
     fatresize.sandbox.autodetectCliPaths = "parent";  # /dev/sda1 -> needs /dev/sda
 
     fd.sandbox.method = "landlock";
-    fd.sandbox.autodetectCliPaths = "existing";
+    fd.sandbox.autodetectCliPaths = true;
     fd.sandbox.whitelistPwd = true;
     fd.sandbox.extraHomePaths = [
       # let it follow symlinks to non-sensitive data
@@ -531,15 +344,14 @@ in
       ".persist/plaintext"
     ];
 
-    ffmpeg.buildCost = 1;
     ffmpeg.sandbox.method = "bwrap";
     ffmpeg.sandbox.autodetectCliPaths = "existingFileOrParent";  # it outputs uncreated files -> parent dir needs mounting
 
     file.sandbox.method = "bwrap";
-    file.sandbox.autodetectCliPaths = "existing";  #< file OR directory, yes
+    file.sandbox.autodetectCliPaths = true;
 
     findutils.sandbox.method = "bwrap";
-    findutils.sandbox.autodetectCliPaths = "existing";
+    findutils.sandbox.autodetectCliPaths = true;
     findutils.sandbox.whitelistPwd = true;
     findutils.sandbox.extraHomePaths = [
       # let it follow symlinks to non-sensitive data
@@ -549,16 +361,16 @@ in
 
     fluffychat-moby.persist.byStore.plaintext = [ ".local/share/chat.fluffy.fluffychat" ];
 
-    font-manager.buildCost = 1;
     font-manager.sandbox.method = "bwrap";
-    font-manager.sandbox.whitelistWayland = true;
     font-manager.packageUnwrapped = pkgs.rmDbusServicesInPlace (pkgs.font-manager.override {
       # build without the "Google Fonts" integration feature, to save closure / avoid webkitgtk_4_0
       withWebkit = false;
     });
 
     forkstat.sandbox.method = "landlock";  #< doesn't seem to support bwrap
-    forkstat.sandbox.isolatePids = false;
+    forkstat.sandbox.extraConfig = [
+      "--sane-sandbox-keep-namespace" "pid"
+    ];
     forkstat.sandbox.extraPaths = [
       "/proc"
     ];
@@ -572,7 +384,7 @@ in
 
     gawk.sandbox.method = "bwrap";  # TODO:sandbox: untested
     gawk.sandbox.wrapperType = "inplace";  # /share/gawk libraries refer to /libexec
-    gawk.sandbox.autodetectCliPaths = "existingFile";
+    gawk.sandbox.autodetectCliPaths = true;
 
     gdb.sandbox.enable = false;  # gdb doesn't sandbox well. i don't know how you could.
     # gdb.sandbox.method = "landlock";  # permission denied when trying to attach, even as root
@@ -584,9 +396,8 @@ in
     # TODO: we can populate gh's stuff statically; it even lets us use the same oauth across machines
     gh.persist.byStore.private = [ ".config/gh" ];
 
-    gimp.buildCost = 1;
     gimp.sandbox.method = "bwrap";
-    gimp.sandbox.whitelistX = true;
+    gimp.sandbox.net = "clearnet";  #< for Xwayland
     gimp.sandbox.whitelistWayland = true;
     gimp.sandbox.extraHomePaths = [
       "Pictures/albums"
@@ -604,39 +415,32 @@ in
       "/tmp"  # "Cannot open display:" if it can't mount /tmp 👀
     ];
 
-    "gnome.gnome-calculator".buildCost = 1;
     "gnome.gnome-calculator".sandbox.method = "bwrap";
     "gnome.gnome-calculator".sandbox.whitelistWayland = true;
 
-    "gnome.gnome-calendar".buildCost = 1;
     # gnome-calendar surely has data to persist, but i use it strictly to do date math, not track events.
     "gnome.gnome-calendar".sandbox.method = "bwrap";
     "gnome.gnome-calendar".sandbox.whitelistWayland = true;
 
+    "gnome.gnome-clocks".sandbox.method = "bwrap";
+    "gnome.gnome-clocks".sandbox.whitelistWayland = true;
+    "gnome.gnome-clocks".suggestedPrograms = [ "dconf" ];
+
     # gnome-disks
-    "gnome.gnome-disk-utility".buildCost = 1;
     "gnome.gnome-disk-utility".sandbox.method = "bwrap";
     "gnome.gnome-disk-utility".sandbox.whitelistDbus = [ "system" ];
     "gnome.gnome-disk-utility".sandbox.whitelistWayland = true;
-    "gnome.gnome-disk-utility".sandbox.extraHomePaths = [
-      "tmp"
-      "use/iso"
-      # TODO: probably need /dev and such
-    ];
 
     # seahorse: dump gnome-keyring secrets.
-    "gnome.seahorse".buildCost = 1;
     # N.B.: it can also manage ~/.ssh keys, but i explicitly don't add those to the sandbox for now.
     "gnome.seahorse".sandbox.method = "bwrap";
     "gnome.seahorse".sandbox.whitelistDbus = [ "user" ];
     "gnome.seahorse".sandbox.whitelistWayland = true;
 
-    gnome-2048.buildCost = 1;
     gnome-2048.sandbox.method = "bwrap";
     gnome-2048.sandbox.whitelistWayland = true;
     gnome-2048.persist.byStore.plaintext = [ ".local/share/gnome-2048/scores" ];
 
-    gnome-frog.buildCost = 1;
     gnome-frog.sandbox.method = "bwrap";
     gnome-frog.sandbox.whitelistWayland = true;
     gnome-frog.sandbox.whitelistDbus = [ "user" ];
@@ -663,12 +467,11 @@ in
     # 1. no number may appear unshaded more than once in the same row/column
     # 2. no two shaded tiles can be direct N/S/E/W neighbors
     # - win once (1) and (2) are satisfied
-    "gnome.hitori".buildCost = 1;
     "gnome.hitori".sandbox.method = "bwrap";
     "gnome.hitori".sandbox.whitelistWayland = true;
 
     gnugrep.sandbox.method = "bwrap";
-    gnugrep.sandbox.autodetectCliPaths = "existing";
+    gnugrep.sandbox.autodetectCliPaths = true;
     gnugrep.sandbox.whitelistPwd = true;
     gnugrep.sandbox.extraHomePaths = [
       # let it follow symlinks to non-sensitive data
@@ -676,6 +479,7 @@ in
       ".persist/plaintext"
     ];
 
+    # sed: there is an edgecase of `--file=<foo>`, wherein `foo` won't be whitelisted.
     gnused.sandbox.method = "bwrap";
     gnused.sandbox.autodetectCliPaths = "existingFile";
     gnused.sandbox.whitelistPwd = true;  #< `-i` flag creates a temporary file in pwd (?) and then moves it.
@@ -692,7 +496,6 @@ in
     grim.sandbox.autodetectCliPaths = "existingOrParent";
     grim.sandbox.whitelistWayland = true;
 
-    hase.buildCost = 1;
     hase.sandbox.method = "bwrap";
     hase.sandbox.net = "clearnet";
     hase.sandbox.whitelistAudio = true;
@@ -701,11 +504,21 @@ in
 
     # hdparm: has to be run as sudo. e.g. `sudo hdparm -i /dev/sda`
     hdparm.sandbox.method = "bwrap";
-    hdparm.sandbox.autodetectCliPaths = "existingFile";
+    hdparm.sandbox.autodetectCliPaths = true;
 
     host.sandbox.method = "landlock";
     host.sandbox.net = "all";  #< technically, only needs to contact localhost's DNS server
 
+    htop.sandbox.method = "landlock";
+    htop.sandbox.extraPaths = [
+      "/proc"
+      "/sys/devices"
+    ];
+    htop.persist.byStore.plaintext = [
+      # consider setting `show_program_path=0` and either `hide_userland_threads=1` or `show_thread_names=1`
+      ".config/htop"
+    ];
+
     iftop.sandbox.method = "landlock";
     iftop.sandbox.capabilities = [ "net_raw" ];
 
@@ -713,7 +526,6 @@ in
     # N.B.: inetutils' `ping` is shadowed by iputils' ping (by nixos, intentionally).
     inetutils.sandbox.method = "landlock";  # want to keep the same netns, at least.
 
-    inkscape.buildCost = 1;
     inkscape.sandbox.method = "bwrap";
     inkscape.sandbox.whitelistWayland = true;
     inkscape.sandbox.extraHomePaths = [
@@ -735,17 +547,10 @@ in
     ];
     iotop.sandbox.capabilities = [ "net_admin" ];
 
-    # provides `ip`, `routel`, `bridge`, others.
-    # landlock works fine for most of these, but `ip netns exec` wants to attach to an existing namespace
-    # and that means we can't use ANY sandboxer for it.
-    iproute2.sandbox.enable = false;
-    # iproute2.sandbox.net = "all";
-    # iproute2.sandbox.capabilities = [ "net_admin" ];
-    # iproute2.sandbox.extraPaths = [
-    #   "/run/netns"  # for `ip netns ...` to work, but maybe not needed anymore?
-    #   "/sys/class/net"  # for `ip netns ...` to work
-    #   "/var/run/netns"
-    # ];
+    # provides `ip`, `routel`, others
+    iproute2.sandbox.method = "landlock";
+    iproute2.sandbox.net = "all";
+    iproute2.sandbox.capabilities = [ "net_admin" ];
 
     iptables.sandbox.method = "landlock";
     iptables.sandbox.net = "all";
@@ -768,7 +573,6 @@ in
       "/proc"
     ];
 
-    krita.buildCost = 1;
     krita.sandbox.method = "bwrap";
     krita.sandbox.whitelistWayland = true;
     krita.sandbox.autodetectCliPaths = "existing";
@@ -784,15 +588,11 @@ in
       "tmp"
     ];
 
-    libcamera = {};
-
-    libcap.sandbox.enable = false;  #< for `capsh`, which i use as a sandboxer
     libcap_ng.sandbox.enable = false;  # there's something about /proc/$pid/fd which breaks `readlink`/stat with every sandbox technique (except capsh-only)
 
     libnotify.sandbox.method = "bwrap";
     libnotify.sandbox.whitelistDbus = [ "user" ];  # notify-send
 
-    losslesscut-bin.buildCost = 1;
     losslesscut-bin.sandbox.method = "bwrap";
     losslesscut-bin.sandbox.extraHomePaths = [
       "Music"
@@ -808,21 +608,27 @@ in
     losslesscut-bin.sandbox.whitelistX = true;
 
     lsof.sandbox.method = "capshonly";  # lsof doesn't sandbox under bwrap or even landlock w/ full access to /
-    lsof.sandbox.capabilities = [ "dac_override" "sys_ptrace" ];
 
     lua = {};
 
-    man-pages.sandbox.enable = false;
-    man-pages-posix.sandbox.enable = false;
+    "mate.engrampa".packageUnwrapped = pkgs.rmDbusServices pkgs.mate.engrampa;
+    "mate.engrampa".sandbox.method = "bwrap";  # TODO:sandbox: untested
+    "mate.engrampa".sandbox.whitelistWayland = true;
+    "mate.engrampa".sandbox.autodetectCliPaths = "existingOrParent";
+    "mate.engrampa".sandbox.extraHomePaths = [
+      "archive"
+      "Books/local"
+      "Books/servo"
+      "records"
+      "ref"
+      "tmp"
+    ];
 
     mercurial.sandbox.method = "bwrap";  # TODO:sandbox: untested
     mercurial.sandbox.net = "clearnet";
     mercurial.sandbox.whitelistPwd = true;
 
-    mesa-demos = {};
-
     # actual monero blockchain (not wallet/etc; safe to delete, just slow to regenerate)
-    monero-gui.buildCost = 1;
     # XXX: is it really safe to persist this? it doesn't have info that could de-anonymize if captured?
     monero-gui.persist.byStore.plaintext = [ ".bitmonero" ];
     monero-gui.sandbox.method = "bwrap";
@@ -831,7 +637,6 @@ in
       "records/finance/cryptocurrencies/monero"
     ];
 
-    mumble.buildCost = 1;
     mumble.persist.byStore.private = [ ".local/share/Mumble" ];
 
     nano.sandbox.method = "bwrap";
@@ -859,15 +664,9 @@ in
     nixpkgs-review.sandbox.wrapperType = "inplace";  #< shell completions use full paths
     nixpkgs-review.sandbox.net = "clearnet";
     nixpkgs-review.sandbox.whitelistPwd = true;
-    nixpkgs-review.sandbox.extraHomePaths = [
-      ".config/git"  #< it needs to know commiter name/email, even if not posting
-    ];
     nixpkgs-review.sandbox.extraPaths = [
       "/nix"
     ];
-    nixpkgs-review.persist.byStore.cryptClearOnBoot = [
-      ".cache/nixpkgs-review"  #< help it not exhaust / tmpfs
-    ];
 
     nmap.sandbox.method = "bwrap";
     nmap.sandbox.net = "all";  # clearnet and lan
@@ -896,8 +695,6 @@ in
     # settings (electron app)
     obsidian.persist.byStore.plaintext = [ ".config/obsidian" ];
 
-    passt.sandbox.enable = false;  #< sandbox helper (netns specifically)
-
     parted.sandbox.method = "landlock";
     parted.sandbox.extraPaths = [
       "/dev"
@@ -929,7 +726,9 @@ in
 
     # procps: free, pgrep, pidof, pkill, ps, pwait, top, uptime, couple others
     procps.sandbox.method = "bwrap";
-    procps.sandbox.isolatePids = false;
+    procps.sandbox.extraConfig = [
+      "--sane-sandbox-keep-namespace" "pid"
+    ];
 
     pstree.sandbox.method = "landlock";
     pstree.sandbox.extraPaths = [
@@ -941,14 +740,11 @@ in
     pulsemixer.sandbox.method = "landlock";
     pulsemixer.sandbox.whitelistAudio = true;
 
-    pwvucontrol.buildCost = 1;
     pwvucontrol.sandbox.method = "bwrap";
     pwvucontrol.sandbox.whitelistAudio = true;
-    pwvucontrol.sandbox.whitelistDri = true;  # else perf on moby is unusable
     pwvucontrol.sandbox.whitelistWayland = true;
 
     python3-repl.packageUnwrapped = pkgs.python3.withPackages (ps: with ps; [
-      psutil
       requests
     ]);
     python3-repl.sandbox.method = "bwrap";
@@ -959,7 +755,7 @@ in
     ];
 
     qemu.sandbox.enable = false;  #< it's a launcher
-    qemu.buildCost = 2;
+    qemu.slowToBuild = true;
 
     rsync.sandbox.method = "bwrap";
     rsync.sandbox.net = "clearnet";
@@ -967,23 +763,17 @@ in
 
     rustc = {};
 
-    sane-cast.sandbox.method = "bwrap";
-    sane-cast.sandbox.net = "clearnet";
-    sane-cast.sandbox.autodetectCliPaths = "existingFile";
-    sane-cast.suggestedPrograms = [ "go2tv" ];
-
-    sane-die-with-parent.sandbox.enable = false;  #< it's a launcher; can't sandbox
-
-    sane-weather.sandbox.method = "bwrap";
-    sane-weather.sandbox.net = "clearnet";
+    sane-open-desktop.sandbox.enable = false;  #< trivial script, and all our deps are sandboxed
+    sane-open-desktop.suggestedPrograms = [
+      "gdbus"
+    ];
 
     screen.sandbox.enable = false;  #< tty; needs to run anything
 
     sequoia.sandbox.method = "bwrap";  # TODO:sandbox: untested
     sequoia.sandbox.whitelistPwd = true;
-    sequoia.sandbox.autodetectCliPaths = "existingFileOrParent";  # supports `-o <file-to-create>`
+    sequoia.sandbox.autodetectCliPaths = true;
 
-    shattered-pixel-dungeon.buildCost = 1;
     shattered-pixel-dungeon.persist.byStore.plaintext = [ ".local/share/.shatteredpixel/shattered-pixel-dungeon" ];
     shattered-pixel-dungeon.sandbox.method = "bwrap";
     shattered-pixel-dungeon.sandbox.whitelistAudio = true;
@@ -991,7 +781,6 @@ in
     shattered-pixel-dungeon.sandbox.whitelistWayland = true;
 
     # printer/filament settings
-    slic3r.buildCost = 1;
     slic3r.persist.byStore.plaintext = [ ".Slic3r" ];
 
     slurp.sandbox.method = "bwrap";
@@ -1003,20 +792,15 @@ in
     smartmontools.sandbox.autodetectCliPaths = "existing";
     smartmontools.sandbox.capabilities = [ "sys_rawio" ];
 
-    # snapshot camera, based on libcamera
-    # TODO: enable dma heaps for more efficient buffer sharing: <https://gitlab.com/postmarketOS/pmaports/-/issues/2789>
-    snapshot = {};
-
     sops.sandbox.method = "bwrap";  # TODO:sandbox: untested
     sops.sandbox.extraHomePaths = [
       ".config/sops"
-      "nixos"
+      "dev/nixos"
       # TODO: sops should only need access to knowledge/secrets,
       # except that i currently put its .sops.yaml config in the root of ~/knowledge
       "knowledge"
     ];
 
-    soundconverter.buildCost = 1;
     soundconverter.sandbox.method = "bwrap";
     soundconverter.sandbox.whitelistWayland = true;
     soundconverter.sandbox.extraHomePaths = [
@@ -1034,7 +818,6 @@ in
     sox.sandbox.autodetectCliPaths = "existingFileOrParent";
     sox.sandbox.whitelistAudio = true;
 
-    space-cadet-pinball.buildCost = 1;
     space-cadet-pinball.persist.byStore.plaintext = [ ".local/share/SpaceCadetPinball" ];
     space-cadet-pinball.sandbox.method = "bwrap";
     space-cadet-pinball.sandbox.whitelistAudio = true;
@@ -1046,8 +829,6 @@ in
 
     sqlite = {};
 
-    sshfs-fuse = {};  # used by fs.nix
-
     strace.sandbox.enable = false;  #< needs to `exec` its args, and therefore support *anything*
 
     subversion.sandbox.method = "bwrap";
@@ -1055,7 +836,6 @@ in
     subversion.sandbox.whitelistPwd = true;
     sudo.sandbox.enable = false;
 
-    superTux.buildCost = 1;
     superTux.sandbox.method = "bwrap";
     superTux.sandbox.wrapperType = "inplace";  # package Makefile incorrectly installs to $out/games/superTux instead of $out/share/games
     superTux.sandbox.whitelistAudio = true;
@@ -1074,14 +854,12 @@ in
 
     tdesktop.persist.byStore.private = [ ".local/share/TelegramDesktop" ];
 
-    tokodon.buildCost = 1;
     tokodon.persist.byStore.private = [ ".cache/KDE/tokodon" ];
 
     tree.sandbox.method = "landlock";
-    tree.sandbox.autodetectCliPaths = "existing";
+    tree.sandbox.autodetectCliPaths = true;
     tree.sandbox.whitelistPwd = true;
 
-    tumiki-fighters.buildCost = 1;
     tumiki-fighters.sandbox.method = "bwrap";
     tumiki-fighters.sandbox.whitelistAudio = true;
     tumiki-fighters.sandbox.whitelistDri = true;  #< not strictly necessary, but triples CPU perf
@@ -1100,16 +878,12 @@ in
       "/sys/bus/usb"
     ];
 
-    valgrind.buildCost = 1;
-    valgrind.sandbox.enable = false;  #< it's a launcher: can't sandbox
-
     visidata.sandbox.method = "bwrap";  # TODO:sandbox: untested
     visidata.sandbox.autodetectCliPaths = true;
 
     # `vulkaninfo`, `vkcube`
     vulkan-tools.sandbox.method = "landlock";
 
-    vvvvvv.buildCost = 1;
     vvvvvv.sandbox.method = "bwrap";
     vvvvvv.sandbox.whitelistAudio = true;
     vvvvvv.sandbox.whitelistDri = true;  #< playable without, but burns noticably more CPU
@@ -1123,8 +897,6 @@ in
       "tmp"
     ];
 
-    watch.sandbox.enable = false;  #< it executes the command it's given
-
     wdisplays.sandbox.method = "bwrap";
     wdisplays.sandbox.whitelistWayland = true;
 
@@ -1132,7 +904,6 @@ in
     wget.sandbox.net = "all";
     wget.sandbox.whitelistPwd = true;  # saves to pwd by default
 
-    whalebird.buildCost = 1;
     whalebird.persist.byStore.private = [ ".config/Whalebird" ];
 
     # `wg`, `wg-quick`
@@ -1147,13 +918,11 @@ in
     wl-clipboard.sandbox.whitelistWayland = true;
 
     wtype = {};
-    wtype.sandbox.method = "bwrap";
-    wtype.sandbox.whitelistWayland = true;
 
     xwayland.sandbox.method = "bwrap";
     xwayland.sandbox.wrapperType = "inplace";  #< consumers use it as a library (e.g. wlroots)
     xwayland.sandbox.whitelistWayland = true;  #< just assuming this is needed
-    xwayland.sandbox.whitelistX = true;
+    xwayland.sandbox.net = "clearnet";  #< just assuming this is needed (X11 traffic)
     xwayland.sandbox.whitelistDri = true;  #< would assume this gives better gfx perf
 
     xterm.sandbox.enable = false;  # need to be able to do everything
@@ -1167,44 +936,7 @@ in
     zfs = {};
   };
 
-  sane.persist.sys.byStore.plaintext = lib.mkIf config.sane.programs.guiApps.enabled [
-    # "/var/lib/alsa"                # preserve output levels, default devices
-    { path = "/var/lib/systemd/backlight"; method = "bind"; }   # backlight brightness; bind because systemd T_T
-  ];
-
-  systemd.services."systemd-backlight@" = lib.mkIf config.sane.programs.guiApps.enabled {
-    after = [
-      "ensure-var-lib-systemd-backlight.service"
-    ];
-    wants = [
-      "ensure-var-lib-systemd-backlight.service"
-    ];
-  };
-
-  hardware.opengl = lib.mkIf config.sane.programs.guiApps.enabled ({
+  programs.feedbackd = lib.mkIf config.sane.programs.feedbackd.enabled {
     enable = true;
-    driSupport = lib.mkDefault true;
-  } // (lib.optionalAttrs pkgs.stdenv.isx86_64 {
-    # for 32 bit applications
-    # upstream nixpkgs forbids setting driSupport32Bit unless specifically x86_64 (so aarch64 isn't allowed)
-    driSupport32Bit = lib.mkDefault true;
-  }));
-
-  system.activationScripts.notifyActive = lib.mkIf config.sane.programs.guiApps.enabled {
-    text = lib.concatStringsSep "\n" ([
-        ''
-          tryNotifyUser() {
-            local user="$1"
-            local new_path="$PATH:${pkgs.sudo}/bin:${pkgs.libnotify}/bin"
-            local version="$(cat $systemConfig/nixos-version)"
-            PATH="$new_path" sudo -u "$user" \
-              env PATH="$new_path" NIXOS_VERSION="$version" /bin/sh -c \
-              '. $HOME/.profile; dbus_file="$XDG_RUNTIME_DIR/bus"; if [ -z "$DBUS_SESSION_BUS_ADDRESS" ] && [ -e "$dbus_file" ]; then export DBUS_SESSION_BUS_ADDRESS="unix:path=$dbus_file"; fi ; if [ -n "$DBUS_SESSION_BUS_ADDRESS" ]; then notify-send "nixos activated" "version: $NIXOS_VERSION" ; fi'
-          }
-        ''
-      ] ++ lib.mapAttrsToList
-        (user: en: lib.optionalString en "tryNotifyUser ${user}")
-        config.sane.programs.guiApps.enableFor.user
-    );
   };
 }

hosts/common/programs/audacity.nix

@@ -1,8 +1,3 @@
-# tips/tricks
-# - audio recording
-#   - default recording input will be silent, on lappy.
-#   - Audio Setup -> Rescan Audio Devices ...
-#   - Audio Setup -> Recording device -> sysdefault
 { pkgs, ... }:
 {
   sane.programs.audacity = {
@@ -14,12 +9,10 @@
       };
     };
 
-    buildCost = 1;
-
     sandbox.method = "bwrap";
     sandbox.whitelistAudio = true;
     sandbox.whitelistWayland = true;
-    sandbox.autodetectCliPaths = "existingFile";
+    sandbox.autodetectCliPaths = true;
     sandbox.extraHomePaths = [
       # support media imports via file->open dir to some common media directories
       "tmp"
@@ -27,9 +20,6 @@
       # audacity needs the entire config dir mounted if running in a sandbox
       ".config/audacity"
     ];
-    sandbox.extraPaths = [
-      "/dev/snd"  # for recording audio inputs to work
-    ];
 
     # disable first-run splash screen
     fs.".config/audacity/audacity.cfg".file.text = ''

hosts/common/programs/ausyscall.nix

@@ -1,10 +0,0 @@
-# `ausyscall --dump`: lists all syscalls by number and name
-{ pkgs, ... }:
-{
-  sane.programs.ausyscall = {
-    packageUnwrapped = pkgs.linkIntoOwnPackage pkgs.audit "bin/ausyscall";
-
-    sandbox.method = "landlock";
-  };
-}
-

hosts/common/programs/bemenu.nix

@@ -87,7 +87,7 @@ let
 in
 {
   sane.programs.bemenu = {
-    sandbox.method = "bwrap";  # landlock works, but requires *all* of $XDG_RUNTIME_DIR to be granted.
+    sandbox.method = "bwrap";  # landlock works, but requires *all* of /run/user/$ID to be granted.
     sandbox.whitelistWayland = true;
     sandbox.extraHomePaths = [
       ".cache/fontconfig"  #< else it complains, and is *way* slower

hosts/common/programs/blast-ugjka/blast-to-default

@@ -2,7 +2,10 @@
 #!nix-shell -i python3 -p "python3.withPackages (ps: [  ])" -p blast-ugjka
 # vim: set filetype=python :
 
+import ctypes
 import logging
+import os
+import signal
 import socket
 import subprocess
 
@@ -13,9 +16,53 @@ logger = logging.getLogger(__name__)
 # map from known devices -> required flags
 DEVICE_MAP = {
   "Theater TV": [],
-  "Cuddlevision": [ "-usewav" ],
+  "[LG] webOS TV OLED55C9PUA": [ "-usewav" ],
 }
 
+def set_pdeathsig(sig=signal.SIGTERM):
+    """
+    helper function to ensure once parent process exits, its children processes will automatically die.
+    see: <https://stackoverflow.com/a/43152455>
+    see: <https://www.man7.org/linux/man-pages/man2/prctl.2.html>
+    """
+    libc = ctypes.CDLL("libc.so.6")
+    return libc.prctl(1, sig)
+
+MY_PID = None
+
+def reap_children(sig=None, frame=None):
+    global MY_PID
+    # reset SIGTERM handler to avoid recursing
+    signal.signal(signal.SIGTERM, signal.Handlers.SIG_DFL)
+    logger.info("killing all children (of pid %d)", MY_PID)
+    os.killpg(MY_PID, signal.SIGTERM)
+
+def reap_on_exit():
+    """
+    catch when the parent exits, and map that to SIGTERM for this process.
+    when this process receives SIGTERM, also terminate all descendent processes.
+
+    this is done because:
+    1. mpv invokes this, but (potentially) via the sandbox wrapper.
+    2. when mpv exits, it `SIGKILL`s that sandbox wrapper.
+    3. bwrap does not pass SIGKILL or SIGTERM to its child.
+    4. hence, we neither receive that signal NOR can we pass it on simply by killing our immediate children
+       (since any bwrap'd children wouldn't pass that signal on...)
+    really, the proper fix would be on mpv's side:
+    - mpv should create a new process group when it launches a command, and kill that process group on exit.
+    or fix this in the sandbox wrapper:
+    - why *doesn't* bwrap forward the signals?
+    - there's --die-with-parent, but i can't apply that *system wide* and expect reasonably behavior
+      <https://github.com/containers/bubblewrap/issues/529>
+    """
+    global MY_PID
+    MY_PID = os.getpid()
+    # create a new process group, pgid = gid
+    os.setpgid(MY_PID, MY_PID)
+
+    set_pdeathsig(signal.SIGTERM)
+    signal.signal(signal.SIGTERM, reap_children)
+
 def get_ranked_ip_addrs():
     """
     return the IP addresses most likely to be LAN addresses
@@ -49,6 +96,8 @@ class BlastDriver:
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
+            # this pdeathsig isn't necessary; seems it might result in leaked pulse outputs
+            # preexec_fn=set_pdeathsig
         )
         self.blast_flags = list(blast_flags)
         self.receiver_names = []
@@ -153,11 +202,15 @@ def main():
     logging.basicConfig()
     logging.getLogger().setLevel(logging.DEBUG)
 
+    reap_on_exit()
+
     blast = try_blast()
 
     if blast is not None:
         logger.info("waiting until blast exits")
         blast.blast.wait()
 
+    reap_children()
+
 if __name__ == "__main__":
     main()

hosts/common/programs/blast-ugjka/default.nix

@@ -39,10 +39,12 @@ in
     sandbox.method = "bwrap";
     sandbox.whitelistAudio = true;
     sandbox.net = "clearnet";
-    #v  else it fails to reap its children (or, maybe, it fails to hook its parent's death signal?)
-    #v  might be possible to remove this, but kinda hard to see a clean way.
-    sandbox.isolatePids = false;
-    suggestedPrograms = [ "blast-ugjka" "sane-die-with-parent" ];
+    sandbox.extraConfig = [
+      # else it fails to reap its children (or, maybe, it fails to hook its parent's death signal?)
+      # might be possible to remove this, but kinda hard to see a clean way.
+      "--sane-sandbox-keep-namespace" "pid"
+    ];
+    suggestedPrograms = [ "blast-ugjka" ];
   };
 
   networking.firewall.allowedTCPPorts = lib.mkIf cfg.enabled [ 9000 ];

hosts/common/programs/bonsai.nix

@@ -99,41 +99,37 @@ in
             type = types.listOf transitionType;
             default = [];
           };
-        };
-      };
-    };
-
-    packageUnwrapped = pkgs.bonsai.overrideAttrs (upstream: {
-      # patch to place the socket in a subdirectory where it can be sandboxed
-      postPatch = (upstream.postPatch or "") + ''
-        substituteInPlace cmd/{bonsaictl,bonsaid}/main.ha \
-          --replace-fail 'path::set(&buf, statedir, "bonsai")' 'path::set(&buf, statedir, "bonsai/bonsai")'
+          configFile = mkOption {
+            type = types.path;
+            default = pkgs.writeText "bonsai_tree.json" (builtins.toJSON cfg.config.transitions);
+            description = ''
+              configuration file to pass to bonsai.
+              usually auto-generated from the sibling options; exposed mainly for debugging or convenience.
             '';
-    });
-
-    fs.".config/bonsai/bonsai_tree.json".symlink.text = builtins.toJSON cfg.config.transitions;
+          };
+        };
+      };
+    };
 
     sandbox.method = "bwrap";
     sandbox.extraRuntimePaths = [
-      "bonsai"
+      "/"  #< just needs "bonsai", but needs to create it first...
     ];
 
     services.bonsaid = {
       description = "bonsai: programmable input dispatcher";
-      dependencyOf = [ "sway" ];  # to ensure `$XDG_RUNTIME_DIR/bonsai` exists before sway binds it
-      partOf = [ "graphical-session" ];
-      # nice -n -11 chosen arbitrarily. i hope this will allow for faster response to inputs, but without audio underruns (pipewire is -21, dino -15-ish)
-      command = pkgs.writeShellScript "bonsai-start" ''
-        # TODO: don't create the sway directory here!
-        # i do it for now because sway and bonsai call into eachother; circular dependency:
-        # - sway -> bonsai -> sane-input-handler -> swaymsg
-        mkdir -p $XDG_RUNTIME_DIR/{bonsai,sway}
-        exec nice -n -11 bonsaid -t $HOME/.config/bonsai/bonsai_tree.json
+      after = [ "graphical-session.target" ];
+      wantedBy = [ "graphical-session.target" ];
+
+      script = ''
+        ${pkgs.coreutils}/bin/rm -f $XDG_RUNTIME_DIR/bonsai
+        exec ${cfg.package}/bin/bonsaid -t ${cfg.config.configFile}
       '';
-      cleanupCommand = "rm -f $XDG_RUNTIME_DIR/bonsai/bonsai";
-      readiness.waitExists = [
-        "$XDG_RUNTIME_DIR/bonsai/bonsai"
-      ];
+      serviceConfig = {
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "5s";
+      };
     };
   };
 }

hosts/common/programs/brave.nix

@@ -1,12 +1,6 @@
-{ pkgs, ... }:
+{ ... }:
 {
   sane.programs.brave = {
-    # convert eval error to build failure
-    packageUnwrapped = if (builtins.tryEval pkgs.brave).success then
-      pkgs.brave
-    else
-      pkgs.runCommandLocal "brave-not-supported" {} "false"
-    ;
     sandbox.method = "bwrap";
     sandbox.wrapperType = "inplace";  # /opt/share/brave.com vendor-style packaging
     sandbox.net = "all";
@@ -14,9 +8,6 @@
       "dev"  # for developing anything web-related
       "tmp"
     ];
-    sandbox.extraPaths = [
-      "/tmp"  # needed particularly if run from `sane-vpn do`
-    ];
     sandbox.whitelistAudio = true;
     sandbox.whitelistDri = true;
     sandbox.whitelistWayland = true;

hosts/common/programs/brightnessctl.nix

@@ -1,23 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.sane.programs.brightnessctl;
-in
-{
-  sane.programs.brightnessctl = {
-    sandbox.method = "landlock";  # also bwrap, but landlock is more responsive
-    sandbox.extraPaths = [
-      "/sys/class/backlight"
-      "/sys/class/leds"
-      "/sys/devices"
-    ];
-    # sandbox.whitelistDbus = [ "system" ];  #< only necessary if not granting udev perms
-  };
-
-  services.udev.extraRules = let
-    chmod = "${pkgs.coreutils}/bin/chmod";
-    chown = "${pkgs.coreutils}/bin/chown";
-  in lib.mkIf cfg.enabled ''
-    # make backlight controllable by members of `video`
-    SUBSYSTEM=="backlight", RUN+="${chown} :video $sys$devpath/brightness", RUN+="${chmod} g+w $sys$devpath/brightness"
-  '';
-}

hosts/common/programs/bubblewrap.nix

@@ -21,12 +21,12 @@
         # note that invoking bwrap with capabilities in the 'init' namespace does NOT grant the sandboxed process
         # capabilities in the 'init' namespace. it's a limitation of namespaces that namespaced processes can
         # never receive capabilities in their parent namespace.
-        substituteInPlace bubblewrap.c --replace-fail \
+        substituteInPlace bubblewrap.c --replace \
           'die ("Unexpected capabilities but not setuid, old file caps config?");' \
           '// die ("Unexpected capabilities but not setuid, old file caps config?");'
 
         # enable debug printing
-        # substituteInPlace utils.h --replace-fail \
+        # substituteInPlace utils.h --replace \
         #   '#define __debug__(x)' \
         #   '#define __debug__(x) printf x'
       '';

hosts/common/programs/callaudiod.nix

@@ -1,26 +0,0 @@
-# https://gitlab.com/mobian1/callaudiod
-# device support:
-# - moby:
-#   - mic muting works fine
-#   - speaker seems to have zero volume (maybe it's my alsa profiles?)
-#   - shows some failures when only the modem is online (no wifi)
-#     - gnome-calls doesn't even create an output audio stream, for example; and the other end of the call can't hear any mic.
-# - desko: unsupported. no mic muting, etc.
-#   - "Card 'alsa_card.pci-0000_0b_00.1' lacks speaker and/or earpiece port, skipping"
-#   - "callaudiod-pulse-CRITICAL **: 07:45:48.092: No suitable card found, stopping here..."
-{ pkgs, ... }:
-{
-  sane.programs.callaudiod = {
-    packageUnwrapped = pkgs.rmDbusServices pkgs.callaudiod;
-
-    # probably more needed once i enable proper sandboxing, but for now this ensures the service isn't started too early!
-    sandbox.whitelistAudio = true;
-    sandbox.whitelistDbus = [ "user" ];
-
-    services.callaudiod = {
-      description = "callaudiod: dbus service to switch audio profiles and mute microphone";
-      partOf = [ "default" ];
-      command = "callaudiod";
-    };
-  };
-}

hosts/common/programs/calls.nix

@@ -1,14 +1,20 @@
 # GNOME calls
 # - <https://gitlab.gnome.org/GNOME/calls>
 # - both a dialer and a call handler.
-# - uses callaudiod dbus service.
+# - uses callaudiod dbus package.
 #
 # initial JMP.chat configuration:
 # - message @cheogram.com "reset sip account"  (this is not destructive, despite the name)
 # - the bot will reply with auto-generated username/password plus a SIP server endpoint.
 #   just copy those into gnome-calls' GUI configurator
-# - now gnome-calls can do outbound calls. inbound calls can be routed by messaging the bot: "configure calls"
-{ config, lib, pkgs, ... }:
+# - now gnome-calls can do outbound calls. inbound calls requires more chatting with the help bot
+#
+# my setup here is still very WIP.
+# open questions:
+# - can i receive calls even with GUI closed?
+#   - e.g. activated by callaudiod?
+#   - looks like `gnome-calls --daemon` does that?
+{ config, lib, ... }:
 let
   cfg = config.sane.programs.calls;
 in
@@ -19,52 +25,37 @@ in
       type = types.submodule {
         options.autostart = mkOption {
           type = types.bool;
-          default = true;
+          default = false;
         };
       };
     };
 
-    packageUnwrapped = pkgs.calls.overrideAttrs (upstream: {
-      patches = (upstream.patches or []) ++ [
-        (pkgs.fetchpatch {
-          # usability improvement... if the UI is visible, then i can receive calls. otherwise, i can't!
-          url = "https://git.uninsane.org/colin/gnome-calls/commit/a19166d85927e59662fae189a780eed18bf876ce.patch";
-          name = "exit on close (i.e. never daemonize)";
-          hash = "sha256-NoVQV2TlkCcsBt0uwSyK82hBKySUW4pADrJVfLFvWgU=";
-        })
-      ];
-    });
-
-    sandbox.method = "bwrap";
-    sandbox.net = "clearnet";
-    sandbox.whitelistAudio = true;
-    sandbox.whitelistDbus = [ "user" ];  # necessary for secrets, at the minimum
-    sandbox.whitelistWayland = true;
-
     persist.byStore.private = [
       # ".cache/folks"      # contact avatars?
       # ".config/calls"
       ".local/share/calls"  # call "records"
       # .local/share/folks  # contacts?
     ];
-    # this is only the username/endpoint: the actual password appears to be stored in gnome-keyring
     secrets.".config/calls/sip-account.cfg" = ../../../secrets/common/gnome_calls_sip-account.cfg.bin;
     suggestedPrograms = [
-      "callaudiod"  # runtime dependency (optional, but probably needed for mic muting?)
       "feedbackd"  # needs `phone-incoming-call`, in particular
-      "gnome-keyring"  # to remember the password
     ];
 
     services.gnome-calls = {
+      # TODO: prevent gnome-calls from daemonizing when started manually
       description = "gnome-calls daemon to monitor incoming SIP calls";
-      partOf = lib.mkIf cfg.config.autostart [ "graphical-session" ];
+      wantedBy = lib.mkIf cfg.config.autostart [ "graphical-session.target" ];
+      serviceConfig = {
         # add --verbose for more debugging
-      # add --daemon to avoid showing UI on launch.
-      #   note that no matter the flags, it returns to being a daemon whenever the UI is manually closed,
-      #   revealed when launched.
-      # default latency is 10ms, which is too low and i get underruns on moby.
-      # 50ms is copied from dino, not at all tuned.
-      command = "env G_MESSAGES_DEBUG=all PULSE_LATENCY_MSEC=50 gnome-calls";
+        ExecStart = "${cfg.package}/bin/gnome-calls --daemon";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "10s";
       };
+      environment.G_MESSAGES_DEBUG = "all";
+    };
+  };
+  programs.calls = lib.mkIf cfg.enabled {
+    enable = true;
   };
 }

hosts/common/programs/celeste64.nix

@@ -1,8 +1,6 @@
 { ... }:
 {
   sane.programs.celeste64 = {
-    buildCost = 1;
-
     sandbox.method = "bwrap";
     sandbox.whitelistAudio = true;
     sandbox.whitelistDri = true;

hosts/common/programs/conky/battery_estimate

@@ -0,0 +1,184 @@
+#!/bin/sh
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash
+
+usage() {
+  echo "usage: battery_estimate [options...]"
+  echo
+  echo "pretty-prints a battery estimate (icon to indicate state, and a duration estimate)"
+  echo
+  echo "options:"
+  echo "  --debug: output additional information, to stderr"
+  echo "  --minute-suffix <string>:  use the provided string as a minutes suffix"
+  echo "  --hour-suffix <string>:  use the provided string as an hours suffix"
+  echo "  --icon-suffix <string>:  use the provided string as an icon suffix"
+  echo "  --percent-suffix <string>:  use the provided string when displaying percents"
+}
+
+# these icons come from sxmo; they only render in nerdfonts
+icon_bat_chg=("󰢟" "󱊤" "󱊥" "󰂅")
+icon_bat_dis=("󰂎" "󱊡" "󱊢" "󱊣")
+suffix_icon=" "  # thin space
+suffix_percent="%"
+# suffix_icon=" "
+
+# render time like: 2ʰ08ᵐ
+# unicode sub/super-scripts: <https://en.wikipedia.org/wiki/Unicode_subscripts_and_superscripts>
+# symbol_hr="ʰ"
+# symbol_min="ᵐ"
+
+# render time like: 2ₕ08ₘ
+# symbol_hr="ₕ"
+# symbol_min="ₘ"
+
+# render time like: 2h08m
+# symbol_hr="h"
+# symbol_min="m"
+
+# render time like: 2:08
+# symbol_hr=":"
+# symbol_min=
+
+# render time like: 2꞉08⧗
+symbol_hr="꞉"
+symbol_min="⧗"
+# variants:
+# symbol_hr=":"
+# symbol_min="⧖"
+# symbol_min="⌛"
+
+# render time like: 2'08"
+# symbol_hr="'"
+# symbol_min='"'
+
+log() {
+  if [ "$BATTERY_ESTIMATE_DEBUG" = "1" ]; then
+    printf "$@" >&2
+    echo >&2
+  fi
+}
+
+render_icon() {
+  # args:
+  # 1: "chg" or "dis"
+  # 2: current battery percentage
+  level=$(($2 / 25))
+  level=$(($level > 3 ? 3 : $level))
+  level=$(($level < 0 ? 0 : $level))
+  log "icon: %s %d" "$1" "$level"
+  if [ "$1" = "dis" ]; then
+    printf "%s" "${icon_bat_dis[$level]}"
+  elif [ "$1" = "chg" ]; then
+    printf "%s" "${icon_bat_chg[$level]}"
+  fi
+}
+
+try_path() {
+  # assigns output variables:
+  # - perc, perc_from_full  (0-100)
+  # - full, rate (pos means charging)
+  if [ -f "$1/capacity" ]; then
+    log "perc, perc_from_full from %s" "$1/capacity"
+    perc=$(cat "$1/capacity")
+    perc_from_full=$((100 - $perc))
+  fi
+
+  if [ -f "$1/charge_full_design" ] && [ -f "$1/current_now" ]; then
+    log "full, rate from %s and %s" "$1/charge_full_design" "$1/current_now"
+    # current is positive when charging
+    full=$(cat "$1/charge_full_design")
+    rate=$(cat "$1/current_now")
+  elif [ -f "$1/energy_full" ] && [ -f "$1/power_now" ]; then
+    log "full, rate from %s and %s" "$1/energy_full" "$1/power_now"
+    # power_now is positive when discharging
+    full=$(cat "$1/energy_full")
+    rate=-$(cat "$1/power_now")
+  elif [ -f "$1/energy_full" ] && [ -f "$1/energy_now" ]; then
+    log "full, rate from %s and %s" "$1/energy_full" "$1/energy_now"
+    log "  this is a compatibility path for legacy Thinkpad batteries which do not populate the 'power_now' field, and incorrectly populate 'energy_now' with power info"
+    # energy_now is positive when discharging
+    full=$(cat "$1/energy_full")
+    rate=-$(cat "$1/energy_now")
+  fi
+}
+
+try_all_paths() {
+  try_path "/sys/class/power_supply/axp20x-battery"  # Pinephone
+  try_path "/sys/class/power_supply/BAT0"  # Thinkpad
+  log "perc: %d, perc_from_full: %d" "$perc" "$perc_from_full"
+  log "full: %f, rate: %f" "$full" "$rate"
+  log "  rate > 0 means charging, else discharging"
+}
+
+fmt_minutes() {
+  # args:
+  # 1: icon to render
+  # 2: string to show if charge/discharge time is indefinite
+  # 3: minutes to stable state (i.e. to full charge or full discharge)
+  #    - we work in minutes instead of hours for precision: bash math is integer-only
+  log "charge/discharge time: %f min" "$3"
+  # args: <battery symbol> <text if ludicrous estimate> <estimated minutes to full/empty>
+  if [ -n "$3" ] && [ "$3" -lt 1440 ]; then
+    hr=$(($3 / 60))
+    hr_in_min=$(($hr * 60))
+    min=$(($3 - $hr_in_min))
+    printf "%s%s%d%s%02d%s" "$1" "$suffix_icon" "$hr" "$symbol_hr" "$min" "$symbol_min"
+  else
+    log "charge/discharge duration > 1d"
+    printf "%s%s%s" "$1" "$suffix_icon" "$2"  # more than 1d
+  fi
+}
+
+pretty_output() {
+  if [ -n "$perc" ]; then
+    duration=""
+    if [ "$rate" -gt 0 ]; then
+      log "charging"
+      icon="$(render_icon chg $perc)"
+      duration="$(($full * 60 * $perc_from_full / (100 * $rate)))"
+    else
+      log "discharging"
+      icon="$(render_icon dis $perc)"
+      if [ "$rate" -lt 0 ]; then
+        duration="$(($full * 60 * $perc / (-100 * $rate)))"
+      fi
+    fi
+    fmt_minutes "$icon" "$perc$suffix_percent" "$duration"
+  fi
+}
+
+while [ "$#" -gt 0 ]; do
+  case "$1" in
+    "--debug")
+      shift
+      BATTERY_ESTIMATE_DEBUG=1
+      ;;
+    "--icon-suffix")
+      shift
+      suffix_icon="$1"
+      shift
+      ;;
+    "--hour-suffix")
+      shift
+      symbol_hr="$1"
+      shift
+      ;;
+    "--minute-suffix")
+      shift
+      symbol_min="$1"
+      shift
+      ;;
+    "--percent-suffix")
+      shift
+      suffix_percent="$1"
+      shift
+      ;;
+    *)
+      usage
+      exit 1
+      ;;
+  esac
+done
+
+try_all_paths
+pretty_output

hosts/common/programs/conky/default.nix

@@ -1,31 +1,39 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 {
   sane.programs.conky = {
+    # TODO: non-sandboxed `conky` still ships via `sxmo-utils`, but unused
     sandbox.method = "bwrap";
     sandbox.net = "clearnet";  #< for the scripts it calls (weather)
     sandbox.extraPaths = [
       "/sys/class/power_supply"
-      "/sys/devices"  # needed by sane-sysinfo
+      "/sys/devices"  # needed by battery_estimate
       # "/sys/devices/cpu"
       # "/sys/devices/system"
     ];
     sandbox.whitelistWayland = true;
 
-    suggestedPrograms = [
-      "sane-sysinfo"
-      "sane-weather"
-    ];
-
-    fs.".config/conky/conky.conf".symlink.target = pkgs.substituteAll {
+    fs.".config/conky/conky.conf".symlink.target =
+      let
+        battery_estimate = pkgs.static-nix-shell.mkBash {
+          pname = "battery_estimate";
+          srcRoot = ./.;
+        };
+      in pkgs.substituteAll {
         src = ./conky.conf;
-      bat = "sane-sysinfo";
-      weather = "timeout 20 sane-weather";
+        bat = "${battery_estimate}/bin/battery_estimate";
+        weather = "timeout 20 ${pkgs.sane-weather}/bin/sane-weather";
       };
 
     services.conky = {
       description = "conky dynamic desktop background";
-      partOf = [ "graphical-session" ];
-      command = "conky";
+      after = [ "graphical-session.target" ];
+      # partOf = [ "graphical-session.target" ];  # propagate stop/restart signal from graphical-session to this unit
+      wantedBy = [ "graphical-session.target" ];
+
+      serviceConfig.ExecStart = "${config.sane.programs.conky.package}/bin/conky";
+      serviceConfig.Type = "simple";
+      serviceConfig.Restart = "on-failure";
+      serviceConfig.RestartSec = "10s";
     };
   };
 }

hosts/common/programs/cozy.nix

@@ -13,8 +13,6 @@
       '';
     });
 
-    buildCost = 1;
-
     sandbox.method = "bwrap";  # landlock gives: _multiprocessing.SemLock: Permission Denied
     sandbox.whitelistAudio = true;
     sandbox.whitelistDbus = [ "user" ];  # mpris

hosts/common/programs/cups.nix

@@ -1,34 +0,0 @@
-# docs: <https://wiki.nixos.org/wiki/Printing>
-# to add a printer:
-# 1. <http://localhost:631/admin/>
-# 2. click "find new printers" and follow prompts
-#   - prefer to use the "Generic IPP Everywhere Printer" driver
-# alternatively, add/modify printers by running
-# - `system-config-printer`
-{ config, lib, ... }:
-let
-  cfg = config.sane.programs.cups;
-in
-{
-  sane.programs.cups = {
-    suggestedPrograms = [
-      "system-config-printer"
-    ];
-  };
-  sane.programs.system-config-printer = {};
-
-  services.printing = lib.mkIf cfg.enabled {
-    enable = true;
-    startWhenNeeded = false;  #< a.k.a. socket activated?
-    # webInterface = false;
-    # logLevel = "debug";  # default: "info"
-    # extraConfig = "<lines ... >";
-    # drivers = [ <cups driver packages...> ]
-  };
-  # services.avahi = lib.mkIf cfg.enabled {
-  #   # only needed for wireless printing
-  #   enable = true;
-  #   nssmdns4 = true;
-  #   openFirewall = true;
-  # };
-}

hosts/common/programs/curlftpfs.nix

@@ -1,35 +0,0 @@
-{ pkgs, ... }:
-{
-  sane.programs.curlftpfs = {
-    packageUnwrapped = pkgs.curlftpfs.overrideAttrs (upstream: {
-      # my fork includes:
-      # - per-operation timeouts (CURLOPT_TIMEOUT; would use CURLOPT_LOW_SPEED_TIME/CURLOPT_LOW_SPEED_LIMIT but they don't apply)
-      #   - exit on timeout (so that one knows to abort the mount, instead of waiting indefinitely)
-      # - support for "meta" keys found in /etc/fstab
-      src = pkgs.fetchFromGitea {
-        domain = "git.uninsane.org";
-        owner = "colin";
-        repo = "curlftpfs";
-        rev = "0890d32e709b5a01153f00d29ed4c00299744f5d";
-        hash = "sha256-M28PzHqEAkezQdtPeL16z56prwl3BfMZqry0dlpXJls=";
-      };
-      # `mount` clears PATH before calling the mount helper (see util-linux/lib/env.c),
-      # so the traditional /etc/fstab approach of fstype=fuse and device = curlftpfs#URI doesn't work.
-      # instead, install a `mount.curlftpfs` mount helper. this is what programs like `gocryptfs` do.
-      postInstall = (upstream.postInstall or "") + ''
-        ln -s curlftpfs $out/bin/mount.fuse.curlftpfs
-        ln -s curlftpfs $out/bin/mount.curlftpfs
-      '';
-    });
-
-    # TODO: try to sandbox this better? maybe i can have fuse (unsandboxed) invoke curlftpfs (sandboxed)?
-    # - landlock gives EPERM
-    # - bwrap just silently doesn't mount it, maybe because of setuid stuff around fuse?
-    # sandbox.method = "capshonly";
-    # sandbox.net = "all";
-    # sandbox.capabilities = [
-    #   "sys_admin"
-    #   "sys_module"
-    # ];
-  };
-}

hosts/common/programs/dbus.nix

@@ -1,54 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.sane.programs.dissent;
-in
-{
-  sane.programs.dbus = {
-    configOption = with lib; mkOption {
-      default = {};
-      type = types.submodule {
-        options.autostart = mkOption {
-          type = types.bool;
-          default = true;
-        };
-      };
-    };
-
-    packageUnwrapped = (pkgs.dbus.override {
-      # remove features i don't want. mostly to avoid undesired interactions, but also it reduces the closure by 55 MB :)
-      enableSystemd = false;
-      x11Support = false;
-    }).overrideAttrs (upstream: {
-      postFixup = (upstream.postFixup or "") + ''
-        # the XML docs have a URI field which points to self,
-        # and that breaks the sandbox checker
-        substituteInPlace $out/share/xml/dbus-1/catalog.xml \
-          --replace-fail "$out" "/run/current-system/sw"
-
-        # conf file points to dbus-daemon-launch-helper by absolute path,
-        # which breaks sandboxing. i don't want dbus auto-launching stuff anyway though.
-        substituteInPlace $out/share/dbus-1/system.conf \
-          --replace-fail "$out/libexec/dbus-daemon-launch-helper" "false"
-      '';
-    });
-
-    sandbox.method = "bwrap";
-    sandbox.extraRuntimePaths = [
-      "/"  #< it needs to create a file in the root. TODO: move the bus handle into a sandboxable subdirectory
-    ];
-    sandbox.isolatePids = false;   #< not actually sure *why* this is necessary, but it is
-
-    env.DBUS_SESSION_BUS_ADDRESS = "unix:path=$XDG_RUNTIME_DIR/bus";
-
-    # normally systemd would create a dbus session for us, but if you configure it not to do that
-    # then we can create our own. not sure if there's a dependency ordering issue here: lots
-    # of things depend on dbus but i don't do anything special to guarantee this is initialized
-    # before them.
-    services.dbus = {
-      description = "dbus user session";
-      partOf = lib.mkIf cfg.config.autostart [ "default" ];
-      command = "dbus-daemon --session --nofork --address=$DBUS_SESSION_BUS_ADDRESS";
-      readiness.waitExists = [ "$XDG_RUNTIME_DIR/bus" ];
-    };
-  };
-}

hosts/common/programs/dconf.nix

@@ -34,8 +34,15 @@ in
 
     services.dconf = {
       description = "dconf configuration database/server";
-      partOf = [ "default" ];
-      command = "${lib.getLib cfg.package}/libexec/dconf-service";
+      after = [ "graphical-session.target" ];
+      wantedBy = [ "graphical-session.target" ];
+
+      serviceConfig = {
+        ExecStart = "${lib.getLib cfg.package}/libexec/dconf-service";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "5s";
+      };
     };
 
     # supposedly necessary for packages which haven't been wrapped (i.e. wrapGtkApp?),

hosts/common/programs/default.nix

@@ -9,14 +9,11 @@
     ./animatch.nix
     ./assorted.nix
     ./audacity.nix
-    ./ausyscall.nix
     ./bemenu.nix
     ./blast-ugjka
     ./bonsai.nix
     ./brave.nix
-    ./brightnessctl.nix
     ./bubblewrap.nix
-    ./callaudiod.nix
     ./calls.nix
     ./cantata.nix
     ./catt.nix
@@ -24,28 +21,21 @@
     ./chatty.nix
     ./conky
     ./cozy.nix
-    ./cups.nix
-    ./curlftpfs.nix
-    ./dbus.nix
     ./dconf.nix
     ./deadd-notification-center
     ./dialect.nix
     ./dino.nix
     ./dissent.nix
-    ./dtrx.nix
-    ./eg25-control.nix
     ./element-desktop.nix
-    ./engrampa.nix
     ./epiphany.nix
-    ./errno.nix
     ./evince.nix
     ./fcitx5.nix
     ./feedbackd.nix
     ./firefox.nix
+    ./firejail.nix
     ./flare-signal.nix
     ./fontconfig.nix
     ./fractal.nix
-    ./free.nix
     ./frozen-bubble.nix
     ./fwupd.nix
     ./g4music.nix
@@ -53,7 +43,6 @@
     ./gdbus.nix
     ./geary.nix
     ./git.nix
-    ./gnome-clocks.nix
     ./gnome-feeds.nix
     ./gnome-keyring
     ./gnome-maps.nix
@@ -61,19 +50,15 @@
     ./go2tv.nix
     ./gpodder.nix
     ./grimshot.nix
-    ./gst-device-monitor.nix
     ./gthumb.nix
-    ./gvfs.nix
     ./handbrake.nix
     ./helix.nix
-    ./htop
     ./imagemagick.nix
     ./jellyfin-media-player.nix
     ./kdenlive.nix
     ./komikku.nix
     ./koreader
     ./less.nix
-    ./lftp.nix
     ./libreoffice.nix
     ./lemoa.nix
     ./loupe.nix
@@ -81,7 +66,6 @@
     ./megapixels.nix
     ./mepo.nix
     ./mimeo
-    ./mmcli.nix
     ./mopidy.nix
     ./mpv
     ./msmtp.nix
@@ -91,36 +75,23 @@
     ./nheko.nix
     ./nicotine-plus.nix
     ./nix-index.nix
-    ./nmcli.nix
     ./notejot.nix
     ./ntfy-sh.nix
-    ./nwg-panel
-    ./objdump.nix
     ./obsidian.nix
     ./offlineimap.nix
     ./open-in-mpv.nix
-    ./pactl.nix
     ./pipewire.nix
     ./planify.nix
     ./portfolio-filemanager.nix
     ./playerctl.nix
-    ./ps.nix
     ./rhythmbox.nix
     ./ripgrep.nix
     ./rofi
-    ./rtkit.nix
-    ./s6-rc.nix
     ./sane-input-handler
-    ./sane-open.nix
     ./sane-screenshot.nix
     ./sane-scripts.nix
-    ./sane-sysinfo.nix
-    ./sane-theme.nix
-    ./sanebox.nix
     ./schlock.nix
-    ./seatd.nix
     ./sfeed.nix
-    ./shadow.nix
     ./signal-desktop.nix
     ./splatmoji.nix
     ./spot.nix
@@ -135,7 +106,6 @@
     ./swayidle.nix
     ./swaylock.nix
     ./swaynotificationcenter
-    ./switchboard.nix
     ./sysvol.nix
     ./tangram.nix
     ./tor-browser.nix
@@ -148,6 +118,7 @@
     ./wine.nix
     ./wireplumber.nix
     ./wireshark.nix
+    ./wob
     ./wvkbd.nix
     ./xarchiver.nix
     ./xdg-desktop-portal.nix
@@ -158,7 +129,6 @@
     ./zathura.nix
     ./zeal.nix
     ./zecwallet-lite.nix
-    ./zulip.nix
     ./zsh
   ];
 

hosts/common/programs/dialect.nix

@@ -1,6 +1,15 @@
 { pkgs, ... }:
 {
   sane.programs.dialect = {
+    sandbox.method = "bwrap";
+    sandbox.wrapperType = "inplace";  # share/search_providers/ calls back into the binary, weird wrap semantics
+    sandbox.whitelistWayland = true;
+    sandbox.net = "clearnet";
+    sandbox.extraHomePaths = [
+      ".config/dconf"  # won't start without it
+    ];
+    suggestedPrograms = [ "dconf" ];  #< to persist settings
+
     packageUnwrapped = pkgs.dialect.overrideAttrs (upstream: {
       # TODO: send upstream
       # TODO: figure out how to get audio working
@@ -9,17 +18,5 @@
         pkgs.glib-networking  # for TLS
       ];
     });
-
-    suggestedPrograms = [ "dconf" ];  #< to persist settings
-
-    buildCost = 1;
-
-    sandbox.method = "bwrap";
-    sandbox.wrapperType = "inplace";  # share/search_providers/ calls back into the binary, weird wrap semantics
-    sandbox.whitelistWayland = true;
-    sandbox.net = "clearnet";
-    sandbox.extraHomePaths = [
-      ".config/dconf"  # won't start without it
-    ];
   };
 }

hosts/common/programs/dino.nix

@@ -14,27 +14,22 @@
 # but at present it has no "start in tray" type of option: it must render a window.
 #
 # outstanding bugs:
-# - NAT holepunching burns CPU/NET when multiple interfaces are up
-#   - fix by just `ip link set ovpnd-xyz down`
-#     - setting `wg-home` down *seems* to be not necessary
-#   - characterized by UPnP/SOAP error 500/718 in wireshark
-#   - seems it asks router A to open a port mapping for an IP address which belongs to a different subnet...
 # - mic is sometimes disabled at call start despite presenting as enabled
 #   - fix is to toggle it off -> on in the Dino UI
 # - default mic gain is WAY TOO MUCH (heavily distorted)
-# - on lappy/desktop, right-clicking the mic button allows to toggle audio devices, but impossible to trigger this on moby/touch screen!
+# - TODO: dino should have more optimal niceness/priority to ensure it can process its buffers
+#   - possibly this is solved by enabling RealtimeKit (rtkit)
 # - TODO: see if Dino calls work better with `echo full > /sys/kernel/debug/sched/preempt`
 #
 # probably fixed:
 # - once per 1-2 minutes dino will temporarily drop mic input:
-#   - `rtp-WARNING: plugin.vala:148: Warning in pipeline: Can't record audio fast enough
+#   - `rtp-WRNING: plugin.vala:148: Warning in pipeline: Can't record audio fast enough
 #   - this was *partially* fixed by bumping the pipewire mic buffer to 2048 samples (from ~512)
 #   - this was further fixed by setting PULSE_LATENCY_MSEC=20.
 #   - possibly Dino should be updated internally: `info.rate / 100` -> `info.rate / 50`.
 #     - i think that affects the batching for echo cancellation, adaptive gain control, etc.
-#   - dino *should* be able to use Pipewire directly for calls instead of going through pulse, but had trouble achieving that in actuality
 #
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 let
   cfg = config.sane.programs.dino;
 in
@@ -50,33 +45,6 @@ in
       };
     };
 
-    packageUnwrapped = (pkgs.dino.override {
-      # XXX(2024/04/24): build without echo cancelation (i.e. force WITH_VOICE_PROCESSOR to be undefined).
-      # this means that if the other end of the call is on speaker phone, i'm liable to hear my own voice
-      # leave their speaker, enter their mic, and then return to me.
-      # the benefit is a >50% reduction in CPU use. insignificant on any modern PC; make-or-break on a low-power Pinephone.
-      webrtc-audio-processing = null;
-    }).overrideAttrs (upstream: {
-      # i'm updating experimentally to see if it improves call performance.
-      # i don't *think* this is actually necessary; i don't notice any difference.
-      version = "0.4.3-unstable-2024-04-28";
-      src = lib.warnIf (lib.versionOlder "0.4.3" upstream.version) "dino update: safe to remove sane patches" pkgs.fetchFromGitHub {
-        owner = "dino";
-        repo = "dino";
-        rev = "657502955567dd538e56f300e075c7db52e25d74";
-        hash = "sha256-SApJy9FgxxLOB5A/zGtpdFZtSqSiS03vggRrCte1tFE=";
-      };
-      # avoid double-application of upstreamed patches
-      # https://github.com/NixOS/nixpkgs/pull/309265
-      patches = [];
-      checkPhase = ''
-        runHook preCheck
-        ./xmpp-vala-test
-        # ./signal-protocol-vala-test  # doesn't exist anymore
-        runHook postCheck
-      '';
-    });
-
     sandbox.method = "bwrap";
     sandbox.net = "clearnet";
     sandbox.whitelistAudio = true;
@@ -100,34 +68,26 @@ in
 
     services.dino = {
       description = "dino XMPP client";
-      partOf = lib.mkIf cfg.config.autostart [ "graphical-session" ];
+      after = [ "graphical-session.target" ];
+      # partOf = [ "graphical-session.target" ];
+      wantedBy = lib.mkIf cfg.config.autostart [ "graphical-session.target" ];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/dino";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "20s";
+      };
 
       # audio buffering; see: <https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/FAQ#pipewire-buffering-explained>
       # dino defaults to 10ms mic buffer, which causes underruns, which Dino handles *very* poorly
       # as in, the other end of the call will just not receive sound from us for a couple seconds.
-      # pipewire uses power-of-two buffering for the mic itself (by default), but this env var supports only whole numbers, which isn't quite reconcilable:
-      # - 1024/48000 = 21.33ms
-      # - 2048/48000 = 42.67ms
-      # - 4096/48000 = 85.33ms
-      # also, Dino's likely still doing things in 10ms batches internally.
-      #
-      # note that this number supposedly is just the buffer size which Dino asks Pulse (pipewire) to share with it.
-      # in theory, it's equivalent to adjusting pipewire's quanta setting, and so isn't additive to the existing pipewire buffers.
-      # (and would also be overriden by pipewire's quanta.min setting).
-      # but in practice, setting this seems to have some more effect beyond just the buffer sizes visible in `pw-top`.
-      #
-      # further: decrease the "niceness" of dino, so that it can take precedence over anything else.
-      # ideally this would target just the audio processing, rather than the whole program.
-      # pipewire is the equivalent of `nice -n -21`, so probably don't want to go any more extreme than that.
-      # nice -n -15 chosen arbitrarily; not optimized (and seems to have very little impact in practice anyway).
-      # buffer size:
-      # - 1024 (PULSE_LATENCY_MSEC=20): `pw-top` shows several underruns per second.
-      # - 2048 (PULSE_LATENCY_MSEC=50): `pw-top` shows very few underruns: maybe 1-5 per minute. with voice processor disabled, this works well. with it enabled, i still get gaps in which the mic "disappears".
-      # - 4096 (PULSE_LATENCY_MSEC=100): `pw-top` shows 0 underruns. with voice processor disabled, i seem to be permanently muted. with it enabled, this works well.
-      #
+      # pipewire uses power-of-two buffering for the mic itself. that would put us at 21.33 ms, but this env var supports only whole numbers (21ms ends up not power-of-two).
+      # also, Dino's likely still doing things in 10ms batches internally anyway.
+      environment.PULSE_LATENCY_MSEC = "20";
+
       # note that debug logging during calls produces so much journal spam that it pegs the CPU and causes dropped audio
-      # env G_MESSAGES_DEBUG = "all";
-      command = "env PULSE_LATENCY_MSEC=50 nice -n -15 dino";
+      # environment.G_MESSAGES_DEBUG = "all";
     };
   };
 }

hosts/common/programs/dissent.nix

@@ -28,7 +28,7 @@ in
         # - <https://github.com/diamondburned/dissent/issues/139>
         # - <https://github.com/zalando/go-keyring/issues/46>
         substituteInPlace vendor/github.com/zalando/go-keyring/secret_service/secret_service.go \
-          --replace-fail '"login"' '"Default_keyring"'
+          --replace '"login"' '"Default_keyring"'
       '';
     });
     sandbox.method = "bwrap";
@@ -57,8 +57,15 @@ in
 
     services.dissent = {
       description = "dissent Discord client";
-      partOf = lib.mkIf cfg.config.autostart [ "graphical-session" ];
-      command = "dissent";
+      after = [ "graphical-session.target" ];
+      wantedBy = lib.mkIf cfg.config.autostart [ "graphical-session.target" ];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/dissent";
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "20s";
+      };
     };
   };
 }

hosts/common/programs/dtrx.nix

@@ -1,16 +0,0 @@
-{ pkgs, ... }:
-{
-  sane.programs.dtrx = {
-    packageUnwrapped = pkgs.dtrx.override {
-      # `binutils` is the nix wrapper, which reads nix-related env vars
-      # before passing on to e.g. `ld`.
-      # dtrx probably only needs `ar` at runtime, not even `ld`.
-      binutils = pkgs.binutils-unwrapped;
-      # build without rpm support, since `rpm` package doesn't cross-compile.
-      rpm = null;
-    };
-    sandbox.method = "bwrap";
-    sandbox.whitelistPwd = true;
-    sandbox.autodetectCliPaths = "existing";  #< for the archive
-  };
-}

hosts/common/programs/eg25-control.nix

@@ -1,58 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.sane.programs.eg25-control;
-in
-{
-  sane.programs.eg25-control = {
-    suggestedPrograms = [ "mmcli" ];
-
-    services.eg25-control-powered = {
-      description = "eg25-control-powered: power to the Qualcomm eg25 modem used by PinePhone";
-      startCommand = "eg25-control --power-on --verbose";
-      cleanupCommand = "eg25-control --power-off --verbose";
-      # depends = [ "ModemManager" ]
-    };
-
-    services.eg25-control-gps = {
-      # TODO: separate almanac upload from GPS enablement
-      # - don't want to re-upload the almanac everytime the GPS is toggled
-      # - want to upload almanac even when GPS *isn't* enabled, if we have internet connection.
-      description = "eg25-control-gps: background GPS tracking";
-      startCommand = "eg25-control --enable-gps --dump-debug-info --verbose";
-      cleanupCommand = "eg25-control --disable-gps --dump-debug-info --verbose";
-      depends = [ "eg25-control-powered" ];
-    };
-
-    persist.byStore.plaintext = [ ".cache/eg25-control" ];  #< for cached agps data
-  };
-
-  # TODO: port to s6
-  systemd.services.eg25-control-freshen-agps = lib.mkIf cfg.enabled {
-    description = "keep assisted-GPS data fresh";
-    serviceConfig = {
-      # XXX: this can have a race condition with eg25-control-gps
-      # - eg25-control-gps initiates DL of new/<agps>
-      # - eg25-control-gps tests new/<agps>: it works
-      # - eg25-control-freshen-agps initiates DL of new/<agps>
-      # - eg25-control-gps: moves new/<agps> into cache/
-      #   - but it moved the result (possibly incomplete) of eg25-control-freshen-agps, incorrectly
-      # in practice, i don't expect much issue from this.
-      ExecStart = "${cfg.package}/bin/eg25-control --ensure-agps-cache --verbose";
-      Restart = "no";
-
-      User = "colin";
-    };
-    startAt = "hourly";  # this is a bit more than necessary, but idk systemd calendar syntax
-    after = [ "network-online.target" "nss-lookup.target" ];
-    requires = [ "network-online.target" ];
-    # wantedBy = [ "network-online.target" ]; # auto-start immediately after boot
-  };
-
-  services.udev.extraRules = let
-    chmod = "${pkgs.coreutils}/bin/chmod";
-    chown = "${pkgs.coreutils}/bin/chown";
-  in lib.optionalString cfg.enabled ''
-    # make Modem controllable by user
-    DRIVER=="modem-power", RUN+="${chmod} g+w /sys%p/powered", RUN+="${chown} :networkmanager /sys%p/powered"
-  '';
-}

hosts/common/programs/element-desktop.nix

@@ -4,29 +4,18 @@
 #     - <https://github.com/vector-im/element-desktop/issues/1029#issuecomment-1632688224>
 #   - `rm -rf ~/.config/Element/GPUCache`
 #     - <https://github.com/NixOS/nixpkgs/issues/244486>
-{ lib, pkgs, ... }:
+{ pkgs, ... }:
 {
   sane.programs.element-desktop = {
-    packageUnwrapped = (pkgs.element-desktop.override {
-      # use pre-built electron because otherwise it takes 4 hrs to build from source.
+    packageUnwrapped = pkgs.element-desktop.override {
+      # use pre-build electron because otherwise it takes 4 hrs to build from source.
       electron = pkgs.electron-bin;
-    }).overrideAttrs (upstream: {
-      # fix to use wayland instead of Xwayland:
-      # - replace `NIXOS_OZONE_WL` non-empty check with `WAYLAND_DISPLAY`
-      # - use `wayland` instead of `auto` because --ozone-platform-hint=auto still prefers X over wayland when both are available
-      # alternatively, set env var: `ELECTRON_OZONE_PLATFORM_HINT=wayland` and ignore all of this
-      installPhase = lib.replaceStrings
-        [ "NIXOS_OZONE_WL" "--ozone-platform-hint=auto" ]
-        [ "WAYLAND_DISPLAY" "--ozone-platform-hint=wayland" ]
-        upstream.installPhase
-      ;
-    });
+    };
     suggestedPrograms = [
       "gnome-keyring"
+      "xwayland"
     ];
 
-    buildCost = 1;
-
     sandbox.method = "bwrap";
     sandbox.net = "clearnet";
     sandbox.whitelistAudio = true;

hosts/common/programs/engrampa.nix

@@ -1,17 +0,0 @@
-{ pkgs, ... }:
-{
-  sane.programs."mate.engrampa" = {
-    packageUnwrapped = pkgs.rmDbusServices pkgs.mate.engrampa;
-    sandbox.method = "bwrap";  # TODO:sandbox: untested
-    sandbox.whitelistWayland = true;
-    sandbox.autodetectCliPaths = "existingOrParent";
-    sandbox.extraHomePaths = [
-      "archive"
-      "Books/local"
-      "Books/servo"
-      "records"
-      "ref"
-      "tmp"
-    ];
-  };
-}

hosts/common/programs/epiphany.nix

@@ -23,8 +23,6 @@
       "tmp"
     ];
 
-    buildCost = 2;
-
     # XXX(2023/07/08): running on moby without `WEBKIT_DISABLE_SANDBOX...` fails, with:
     # - `bwrap: Can't make symlink at /var/run: File exists`
     # this could be due to:

hosts/common/programs/errno.nix

@@ -1,21 +0,0 @@
-{ pkgs, ... }:
-{
-  sane.programs.errno = {
-    # packageUnwrapped = pkgs.linkIntoOwnPackage pkgs.moreutils "bin/errno";
-    # actually, don't build all of moreutils because not all of it builds for cross targets.
-    # some of this can be simplified after <https://github.com/NixOS/nixpkgs/pull/316446>
-    packageUnwrapped = pkgs.moreutils.overrideAttrs (base: {
-      makeFlags = (base.makeFlags or []) ++ [
-        "BINS=errno"
-        "MANS=errno.1"
-        "PERLSCRIPTS=errno"  #< Makefile errors if empty, but this works :)
-        "INSTALL_BIN=install"
-      ];
-      #v disable the perl-specific stuff
-      propagatedBuildInputs = [];
-      postInstall = "";
-    });
-
-    sandbox.method = "landlock";
-  };
-}

hosts/common/programs/evince.nix

@@ -1,10 +1,8 @@
 { ... }:
 {
   sane.programs.evince = {
-    buildCost = 1;
-
     sandbox.method = "bwrap";
-    sandbox.autodetectCliPaths = "existingFile";
+    sandbox.autodetectCliPaths = true;
     sandbox.whitelistWayland = true;
 
     mime.associations."application/pdf" = "org.gnome.Evince.desktop";