flake/nixpkgs: 2023-05-22 -> 2023-05-24

```
• Updated input 'nixpkgs-unpatched':
    'github:nixos/nixpkgs/7084250df3d7f9735087d3234407f3c1fc2400e3' (2023-05-22)
  → 'github:nixos/nixpkgs/f91ee3065de91a3531329a674a45ddcb3467a650' (2023-05-24)
```

.sops.yaml

@@ -8,7 +8,7 @@ keys:
   - &host_servo age1tzlyex2z6t88tg9h82943e39shxhmqeyr7ywhlwpdjmyqsndv3qq27x0rf
   - &host_moby age18vq5ktwgeaysucvw9t67drqmg5zd5c5k3le34yqxckkfj7wqdqgsd4ejmt
 creation_rules:
-  - path_regex: secrets/universal*
+  - path_regex: secrets/common*
     key_groups:
     - age:
       - *user_desko_colin
@@ -26,19 +26,19 @@ creation_rules:
       - *user_lappy_colin
       - *user_servo_colin
       - *host_servo
-  - path_regex: secrets/desko.yaml$
+  - path_regex: secrets/desko*
     key_groups:
     - age:
       - *user_desko_colin
       - *user_lappy_colin
       - *host_desko
-  - path_regex: secrets/lappy.yaml$
+  - path_regex: secrets/lappy*
     key_groups:
     - age:
       - *user_lappy_colin
       - *user_desko_colin
       - *host_lappy
-  - path_regex: secrets/moby.yaml$
+  - path_regex: secrets/moby*
     key_groups:
     - age:
       - *user_desko_colin

README.md

@@ -0,0 +1,108 @@
+## What's Here
+
+this is the top-level repo from which i configure/deploy all my NixOS machines:
+- desktop
+- laptop
+- server
+- mobile phone
+
+i enjoy a monorepo approach. this repo references [nixpkgs][nixpkgs], a couple 3rd party
+nix modules like [sops][sops], the sources for [uninsane.org][uninsane-org], and that's
+about it. custom derivations and modules (some of which i try to upstream) live
+directly here; even the sources for those packages is often kept here too.
+
+[nixpkgs]: https://github.com/NixOS/nixpkgs
+[sops]: https://github.com/Mic92/sops-nix
+[uninsane-org]: https://uninsane.org
+
+## Layout
+- `hosts/`
+    - the bulk of config which isn't factored with external use in mind.
+    - that is, if you were to add this repo to a flake.nix for your own use,
+      you won't likely be depending on anything in this directory.
+- `integrations/`
+    - code intended for consumption by external tools (e.g. the Nix User Repos)
+- `modules/`
+    - config which is gated behind `enable` flags, in similar style to nixpkgs'
+      `nixos/` directory.
+    - if you depend on this repo, it's most likely for something in this directory.
+- `nixpatches/`
+    - literally, diffs i apply atop upstream nixpkgs before performing further eval.
+- `overlays/`
+    - exposed via the `overlays` output in `flake.nix`.
+    - predominantly a list of `callPackage` directives.
+- `pkgs/`
+    - derivations for things not yet packaged in nixpkgs.
+    - derivations for things from nixpkgs which i need to `override` for some reason.
+    - inline code for wholly custom packages (e.g. `pkgs/additional/sane-scripts/` for CLI tools
+      that are highly specific to my setup).
+- `scripts/`
+    - scripts which are referenced by other things in this repo.
+    - these aren't generally user-facing, but they're factored out so that they can
+      be invoked directly when i need to debug.
+- `secrets/`
+    - encrypted keys, API tokens, anything which one or more of my machines needs
+      read access to but shouldn't be world-readable.
+    - not much to see here
+- `templates/`
+    - exposed via the `templates` output in `flake.nix`.
+    - used to instantiate short-lived environments.
+    - used to auto-fill the boiler-plate portions of new packages.
+
+
+## Key Points of Interest
+
+i.e. you might find value in using these in your own config:
+
+- `modules/fs/`
+    - use this to statically define leafs and nodes anywhere in the filesystem,
+      not just inside `/nix/store`.
+    - e.g. specify that `/var/www` should be:
+        - owned by a specific user/group
+        - set to a specific mode
+        - symlinked to some other path
+        - populated with some statically-defined data
+        - populated according to some script
+        - created as a dependency of some service (e.g. `nginx`)
+    - values defined here are applied neither at evaluation time _nor_ at activation time.
+        - rather, they become systemd services.
+        - systemd manages dependencies
+        - e.g. link `/var/www -> /mnt/my-drive/www` only _after_ `/mnt/my-drive/www` appears)
+    - this is akin to using [Home Manager's][home-manager] file API -- the part which lets you
+      statically define `~/.config` files -- just with a different philosophy.
+- `modules/persist/`
+    - my alternative to the Impermanence module.
+    - this builds atop `modules/fs/` to achieve things stock impermanence can't:
+        - persist things to encrypted storage which is unlocked at login time (pam_mount).
+        - "persist" cache directories -- to free up RAM -- but auto-wipe them on mount
+          and encrypt them to ephemeral keys so they're unreadable post shutdown/unmount.
+- `modules/programs.nix`
+    - like nixpkgs' `programs` options, but allows both system-wide or per-user deployment.
+    - allows `fs` and `persist` config values to be gated behind program deployment:
+        - e.g. `/home/<user>/.mozilla/firefox` is persisted only for users who
+          `sane.programs.firefox.enableFor.user."<user>" = true;`
+- `modules/users.nix`
+    - convenience layer atop the above modules so that you can just write
+      `fs.".config/git"` instead of `fs."/home/colin/.config/git"`
+
+some things in here could easily find broader use. if you would find benefit in
+them being factored out of my config, message me and we could work to make that happen.
+
+[home-manager]: https://github.com/nix-community/home-manager
+
+## Using This Repo In Your Own Config
+
+this should be a pretty "standard" flake. just reference it, and import either
+- `nixosModules.sane` (for the modules)
+- `overlays.pkgs` (for the packages)
+
+## Mirrors
+
+this repo exists in a few known locations:
+- primary: <https://git.uninsane.org/colin/nix-files>
+- mirror: <https://github.com/nix-community/nur-combined/tree/master/repos/colinsane>
+
+## Contact
+
+if you want to contact me for questions, or collaborate to split something useful into a shared repo, etc,
+you can reach me via any method listed [here](https://uninsane.org/about).

TODO.md

@@ -0,0 +1,73 @@
+## BUGS
+- why i need to manually restart `wireguard-wg-ovpns` on servo periodically
+	- else DNS fails
+
+## REFACTORING:
+### sops/secrets
+- attach secrets to the thing they're used by (sane.programs)
+- rework secrets to leverage `sane.fs`
+- remove sops activation script as it's covered by my systemd sane.fs impl
+
+### roles
+- allow any host to take the role of `uninsane.org`
+    - will make it easier to test new services?
+
+### upstreaming
+- bump nodejs version in lemmy-ui
+- add updateScripts to all my packages in nixpkgs
+- fix lightdm-mobile-greeter for newer libhandy
+- port zecwallet-lite to a from-source build
+- fix or abandon Whalebird
+
+
+## IMPROVEMENTS:
+### security/resilience
+- validate duplicity backups!
+- encrypt more ~ dirs (~/archives, ~/records, ..?)
+    - best to do this after i know for sure i have good backups
+- have `sane.programs` be wrapped such that they run in a cgroup?
+    - at least, only give them access to the portion of the fs they *need*.
+    - Android takes approach of giving each app its own user: could hack that in here.
+- canaries for important services
+    - e.g. daily email checks; daily backup checks
+
+### user experience
+- firefox/librewolf: don't show browserpass/sponsorblock/metamask "first run" on every boot
+- moby: improve gPodder launch time
+- moby: replace jellyfin-desktop with jellyfin-vue?
+    - allows (maybe) to cache media for offline use
+    - "newer" jellyfin client
+    - not packaged for nix
+- find a nice desktop ActivityPub client
+- package Nix/NixOS docs for Zeal
+    - install [doc-browser](https://github.com/qwfy/doc-browser)
+    - this supports both dash (zeal) *and* the datasets from <https://devdocs.io> (which includes nix!)
+    - install [devhelp](https://wiki.gnome.org/Apps/Devhelp)  (gnome)
+- auto-mount servo
+- have xdg-open parse `<repo:...> URIs (or adjust them so that it _can_ parse)
+- `sane.programs`: auto-populate defaults with everything from `pkgs`
+- zsh: disable "command not found" corrections
+- sxmo: allow rotation to the upside-down position
+    - see: <repo:mil/sxmo-utils:scripts/core/sxmo_autorotate.sh>
+    - all orientations *except* upside down are supported
+- sxmo: launch with auto-rotation enabled
+
+### perf
+- why does nixos-rebuild switch take 5 minutes when net is flakey?
+    - trying to auto-mount servo?
+    - something to do with systemd services restarting/stalling
+    - maybe wireguard & its refresh operation, specifically?
+- fix OOM for large builds like webkitgtk
+    - these use significant /tmp space.
+    - either place /tmp on encrypted-cleared-at-boot storage
+        - which probably causes each CPU load for the encryption
+    - **or set up encrypted swap**
+        - encrypted swap could remove the need for my encrypted-cleared-at-boot stuff
+
+
+## NEW FEATURES:
+- add a FTP-accessible file share to servo
+    - just /var/www?
+- migrate MAME cabinet to nix
+    - boot it from PXE from servo?
+- enable IPv6

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "lastModified": 1678901627,
+        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
         "type": "github"
       },
       "original": {
@@ -15,50 +15,14 @@
         "type": "github"
       }
     },
-    "home-manager": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1667907331,
-        "narHash": "sha256-bHkAwkYlBjkupPUFcQjimNS8gxWSWjOTevEuwdnp5m0=",
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "rev": "6639e3a837fc5deb6f99554072789724997bc8e5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "ref": "release-22.05",
-        "repo": "home-manager",
-        "type": "github"
-      }
-    },
-    "impermanence": {
-      "locked": {
-        "lastModified": 1668668915,
-        "narHash": "sha256-QjY4ZZbs9shwO4LaLpvlU2bO9J1juYhO9NtV3nrbnYQ=",
-        "owner": "nix-community",
-        "repo": "impermanence",
-        "rev": "5df9108b346f8a42021bf99e50de89c9caa251c3",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "impermanence",
-        "type": "github"
-      }
-    },
     "mobile-nixos": {
       "flake": false,
       "locked": {
-        "lastModified": 1670131242,
-        "narHash": "sha256-T/o1/3gffr010fsqgNshs1NJJjsnUYvQnUZgm6hilsY=",
+        "lastModified": 1683422260,
+        "narHash": "sha256-79zaClbubRkBNlJ04OSADILuLQHH48N5fu296hEWYlw=",
         "owner": "nixos",
         "repo": "mobile-nixos",
-        "rev": "5ee45cc1f8e43f4af14ee17ccef9156b0db8cd77",
+        "rev": "ba4638836e94a8f16d1d1f9e8c0530b86078029c",
         "type": "github"
       },
       "original": {
@@ -67,43 +31,46 @@
         "type": "github"
       }
     },
+    "nix-serve": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1684319086,
+        "narHash": "sha256-5wwlkWqP1cQUPXp/PJsi09FkgAule5yBghngRZZbUQg=",
+        "owner": "edolstra",
+        "repo": "nix-serve",
+        "rev": "e6e3d09438e803daa5374ad8edf1271289348456",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "nix-serve",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1671722432,
-        "narHash": "sha256-ojcZUekIQeOZkHHzR81st7qxX99dB1Eaaq6PU5MNeKc=",
+        "lastModified": 1606086654,
+        "narHash": "sha256-VFl+3eGIMqNp7cyOMJ6TjM/+UcsLKtodKoYexrlTJMI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "652e92b8064949a11bc193b90b74cb727f2a1405",
+        "rev": "19db3e5ea2777daa874563b5986288151f502e27",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-unstable",
+        "ref": "nixos-20.09",
         "type": "indirect"
       }
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1671883564,
-        "narHash": "sha256-C15oAtyupmLB3coZY7qzEHXjhtUx/+77olVdqVMruAg=",
+        "lastModified": 1684632198,
+        "narHash": "sha256-SdxMPd0WmU9MnDBuuy7ouR++GftrThmSGL7PCQj/uVI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dac57a4eccf1442e8bf4030df6fcbb55883cb682",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-22.11",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs-stable_2": {
-      "locked": {
-        "lastModified": 1671923641,
-        "narHash": "sha256-flPauiL5UrfRJD+1oAcEefpEIUqTqnyKScWe/UUU+lE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "939c05a176b8485971463c18c44f48e56a7801c9",
+        "rev": "d0dade110dc7072d67ce27826cfe9ab2ab0cf247",
         "type": "github"
       },
       "original": {
@@ -113,30 +80,44 @@
         "type": "github"
       }
     },
+    "nixpkgs-unpatched": {
+      "locked": {
+        "lastModified": 1684935479,
+        "narHash": "sha256-6QMMsXMr2nhmOPHdti2j3KRHt+bai2zw+LJfdCl97Mk=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "f91ee3065de91a3531329a674a45ddcb3467a650",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
-        "home-manager": "home-manager",
-        "impermanence": "impermanence",
         "mobile-nixos": "mobile-nixos",
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-stable": "nixpkgs-stable",
+        "nix-serve": "nix-serve",
+        "nixpkgs-unpatched": "nixpkgs-unpatched",
         "sops-nix": "sops-nix",
-        "uninsane": "uninsane"
+        "uninsane-dot-org": "uninsane-dot-org"
       }
     },
     "sops-nix": {
       "inputs": {
         "nixpkgs": [
-          "nixpkgs"
+          "nixpkgs-unpatched"
         ],
-        "nixpkgs-stable": "nixpkgs-stable_2"
+        "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1671937829,
-        "narHash": "sha256-YtaNB+mLw0d67JFYNjRWM+/AL3JCXuD/DGlnTlyX1tY=",
+        "lastModified": 1684637723,
+        "narHash": "sha256-0vAxL7MVMhGbTkAyvzLvleELHjVsaS43p+PR1h9gzNQ=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "855b8d51fc3991bd817978f0f093aa6ae0fae738",
+        "rev": "4ccdfb573f323a108a44c13bb7730e42baf962a9",
         "type": "github"
       },
       "original": {
@@ -145,19 +126,19 @@
         "type": "github"
       }
     },
-    "uninsane": {
+    "uninsane-dot-org": {
       "inputs": {
         "flake-utils": "flake-utils",
         "nixpkgs": [
-          "nixpkgs"
+          "nixpkgs-unpatched"
         ]
       },
       "locked": {
-        "lastModified": 1666870107,
-        "narHash": "sha256-b9eXZxSwhzdJI5uQgfrMhu4SY2POrPkinUg7F5gQVYo=",
+        "lastModified": 1684528780,
+        "narHash": "sha256-QdYxjcTCCLPv++1v9tJBL98nn/AFx0fmzlgzcLK6KRE=",
         "ref": "refs/heads/master",
-        "rev": "80c6ec95bd430e29d231cf745f19279bb76fb382",
-        "revCount": 164,
+        "rev": "f3747a1dad3d34880613821faf26357ba432d3d7",
+        "revCount": 194,
         "type": "git",
         "url": "https://git.uninsane.org/colin/uninsane"
       },

flake.nix

@@ -1,94 +1,155 @@
-# docs:
-# - <https://nixos.wiki/wiki/Flakes>
+# 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`
+# - 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 = {
-    nixpkgs-stable.url = "nixpkgs/nixos-22.11";
-    nixpkgs.url = "nixpkgs/nixos-unstable";
+    # <https://github.com/nixos/nixpkgs/tree/nixos-22.11>
+    # nixpkgs-stable.url = "github:nixos/nixpkgs?ref=nixos-22.11";
+
+    # branch workflow:
+    # - daily:
+    #   - nixos-unstable cut from master after enough packages have been built in caches.
+    # - every 6 hours:
+    #   - master auto-merged into staging.
+    #   - 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?
+    # - for everyday development, prefer `nixos-unstable` branch, as it provides good caching.
+    # - if need to test bleeding updates (e.g. if submitting code into staging):
+    #   - use `staging-next` if it's been cut (i.e. if there's an active staging-next -> master PR)
+    #   - use `staging` if no staging-next branch has been cut.
+    #
+    # <https://github.com/nixos/nixpkgs/tree/nixos-unstable>
+    nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    # nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=staging-next";
+    # nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=staging";
+
     mobile-nixos = {
+      # <https://github.com/nixos/mobile-nixos>
       url = "github:nixos/mobile-nixos";
       flake = false;
     };
-    home-manager = {
-      url = "github:nix-community/home-manager/release-22.05";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
     sops-nix = {
+      # <https://github.com/Mic92/sops-nix>
       url = "github:Mic92/sops-nix";
-      inputs.nixpkgs.follows = "nixpkgs";
+      # inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs-unpatched";
     };
-    impermanence.url = "github:nix-community/impermanence";
-    uninsane = {
+    uninsane-dot-org = {
       url = "git+https://git.uninsane.org/colin/uninsane";
-      inputs.nixpkgs.follows = "nixpkgs";
+      # inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs-unpatched";
+    };
+    nix-serve = {
+      # <https://github.com/edolstra/nix-serve>
+      url = "github:edolstra/nix-serve";
     };
   };
 
   outputs = {
     self,
-    nixpkgs,
-    nixpkgs-stable,
+    nixpkgs-unpatched,
     mobile-nixos,
-    home-manager,
     sops-nix,
-    impermanence,
-    uninsane
-  }: let
-    patchedPkgs = system: nixpkgs.legacyPackages.${system}.applyPatches {
-      name = "nixpkgs-patched-uninsane";
-      src = nixpkgs;
-      patches = import ./nixpatches/list.nix {
-        inherit (nixpkgs.legacyPackages.${system}) fetchpatch;
-        inherit (nixpkgs.lib) fakeHash;
-      };
-    };
-    # return something which behaves like `pkgs`, for the provided system
-    # `local` = architecture of builder. `target` = architecture of the system beying deployed to
-    nixpkgsFor = local: target: import (patchedPkgs target) { crossSystem = target; localSystem = local; };
-    # evaluate ONLY our overlay, for the provided system
-    customPackagesFor = local: target: import ./pkgs/overlay.nix (nixpkgsFor local target) (nixpkgsFor local target);
-    decl-host = { name, local, target }:
+    uninsane-dot-org,
+    nix-serve,
+    ...
+  }@inputs:
     let
-      nixosSystem = import ((patchedPkgs target) + "/nixos/lib/eval-config.nix");
-    in (nixosSystem {
-      # by default the local system is the same as the target, employing emulation when they differ
-      system = target;
-      specialArgs = { inherit mobile-nixos home-manager impermanence; };
-      modules = [
-        ./modules
-        (import ./hosts/instantiate.nix name)
-        home-manager.nixosModule
-        impermanence.nixosModule
-        sops-nix.nixosModules.sops
-        {
-          nixpkgs.overlays = [
-            (import "${mobile-nixos}/overlay/overlay.nix")
-            uninsane.overlay
-            (import ./pkgs/overlay.nix)
-            (next: prev: rec {
-              # non-emulated packages build *from* local *for* target.
-              # for large packages like the linux kernel which are expensive to build under emulation,
-              # the config can explicitly pull such packages from `pkgs.cross` to do more efficient cross-compilation.
-              cross = (nixpkgsFor local target) // (customPackagesFor local target);
-              stable = import nixpkgs-stable { system = target; };
+      inherit (builtins) attrNames elem listToAttrs map mapAttrs;
+      mapAttrs' = f: set:
+        listToAttrs (map (attr: f attr set.${attr}) (attrNames set));
+      # 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.
+      nixpkgs = (import ./nixpatches/flake.nix).outputs {
+        self = nixpkgs;
+        nixpkgs = nixpkgs-unpatched;
+      };
 
-              # cross-compatible packages
-              # gocryptfs = cross.gocryptfs;
+      nixpkgsCompiledBy = system: nixpkgs.legacyPackages."${system}";
 
-              # pinned packages:
-              # 2022/12/13: grpc does not build on aarch64-linux. https://github.com/NixOS/nixpkgs/issues/205887
-              grpc = stable.grpc;
-              # depends on grpc, so pinned.
-              duplicity = stable.duplicity;
+      evalHost = { name, local, target }: nixpkgs.lib.nixosSystem {
+        system = target;
+        modules = [
+          (import ./hosts/instantiate.nix { localSystem = local; hostName = name; })
+          self.nixosModules.default
+          self.nixosModules.passthru
+          {
+            nixpkgs.overlays = [
+              self.overlays.passthru
+              self.overlays.sane-all
+            ];
+          }
+          ({ lib, ... }: {
+            # TODO: does the earlier `system` arg to nixosSystem make its way here?
+            nixpkgs.hostPlatform.system = target;
+            # nixpkgs.buildPlatform = local;  # set by instantiate.nix instead
+            # nixpkgs.config.replaceStdenv = { pkgs }: pkgs.ccacheStdenv;
+          })
+        ];
+      };
+    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"; };
+            lappy =  { name = "lappy"; local = "x86_64-linux"; target = "x86_64-linux"; };
+            moby  =  { name = "moby";  local = "x86_64-linux"; target = "aarch64-linux"; };
+            rescue = { name = "rescue"; local = "x86_64-linux"; target = "x86_64-linux"; };
+          };
+          # cross-compiled builds: instead of emulating the host, build using a cross-compiler.
+          # - these are faster to *build* than the emulated variants (useful when tweaking packages),
+          # - but fewer of their packages can be found in upstream caches.
+          cross = mapAttrValues evalHost hosts;
+          emulated = mapAttrValues
+            ({name, local, target}: evalHost {
+              inherit name target;
+              local = null;
             })
-          ];
-        }
-      ];
-    });
+            hosts;
+          prefixAttrs = prefix: attrs: mapAttrs'
+            (name: value: {
+              name = prefix + name;
+              inherit value;
+            })
+            attrs;
+        in
+          (prefixAttrs "cross-" cross) //
+          (prefixAttrs "emulated-" emulated) // {
+            # prefer native builds for these machines:
+            inherit (emulated) servo desko lappy rescue;
+            # prefer cross-compiled builds for these machines:
+            inherit (cross) moby;
+          };
 
-    decl-bootable-host = { name, local, target }: rec {
-      nixosConfiguration = decl-host { inherit name local target; };
+      # 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)
@@ -102,40 +163,149 @@
       #   - 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`
-      img = nixosConfiguration.config.system.build.img;
-    };
-    hosts.servo = decl-bootable-host { name = "servo"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.desko = decl-bootable-host { name = "desko"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.lappy = decl-bootable-host { name = "lappy"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.moby = decl-bootable-host { name = "moby"; local = "aarch64-linux"; target = "aarch64-linux"; };
-    # special cross-compiled variant, to speed up deploys from an x86 box to the arm target
-    # note that these *do* produce different store paths, because the closure for the tools used to cross compile
-    # v.s. emulate differ.
-    # so deploying foo-cross and then foo incurs some rebuilding.
-    hosts.moby-cross = decl-bootable-host { name = "moby"; local = "x86_64-linux"; target = "aarch64-linux"; };
-    hosts.rescue = decl-bootable-host { name = "rescue"; local = "x86_64-linux"; target = "x86_64-linux"; };
-  in {
-    nixosConfigurations = builtins.mapAttrs (name: value: value.nixosConfiguration) hosts;
-    imgs = builtins.mapAttrs (name: value: value.img) hosts;
-    packages = let
-      allPkgsFor = sys: (customPackagesFor sys sys) // {
-        nixpkgs = nixpkgsFor sys sys;
-        uninsane = uninsane.packages."${sys}";
+      imgs = mapAttrValues (host: host.config.system.build.img) self.nixosConfigurations;
+
+      # unofficial output
+      host-pkgs = mapAttrValues (host: host.config.system.build.pkgs) self.nixosConfigurations;
+      host-programs = mapAttrValues (host: mapAttrValues (p: p.package) host.config.sane.programs) self.nixosConfigurations;
+
+      overlays = {
+        # N.B.: `nix flake check` requires every overlay to take `final: prev:` at defn site,
+        #   hence the weird redundancy.
+        default = final: prev: self.overlays.pkgs final prev;
+        sane-all = final: prev: import ./overlays/all.nix final prev;
+        disable-flakey-tests = final: prev: import ./overlays/disable-flakey-tests.nix final prev;
+        pkgs = final: prev: import ./overlays/pkgs.nix final prev;
+        pins = final: prev: import ./overlays/pins.nix final prev;
+        optimizations = final: prev: import ./overlays/optimizations.nix final prev;
+        passthru = final: prev:
+          let
+            stable =
+              if inputs ? "nixpkgs-stable" then (
+                final': prev': {
+                  stable = inputs.nixpkgs-stable.legacyPackages."${prev'.stdenv.hostPlatform.system}";
+                }
+              ) else (final': prev': {});
+            mobile = (import "${mobile-nixos}/overlay/overlay.nix");
+            uninsane = uninsane-dot-org.overlay;
+            # nix-serve' = nix-serve.overlay;
+            nix-serve' = next: prev: {
+              # XXX(2023/03/02): upstream isn't compatible with modern `nix`. probably the perl bindings.
+              # - we use the package built against `nixpkgs` specified in its flake rather than use its overlay,
+              #   to get around this.
+              inherit (nix-serve.packages."${next.system}") nix-serve;
+            };
+          in
+              (stable final prev)
+              // (mobile final prev)
+              // (uninsane final prev)
+              // (nix-serve' final prev)
+            ;
       };
-    in {
-      x86_64-linux = allPkgsFor "x86_64-linux";
-      aarch64-linux = allPkgsFor "aarch64-linux";
-    };
-    templates = {
-      python-data = {
-        # initialize with:
-        # - `nix flake init -t '/home/colin/dev/nixos/#python-data'`
-        # then enter with:
-        # - `nix develop`
-        path = ./templates/python-data;
-        description = "python environment for data processing";
+
+      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: allPkgs:
+          allPkgs.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" ])
+            && (allPkgs.lib.meta.availableOn allPkgs.stdenv.hostPlatform pkg)
+          )
+          (
+            # expose sane packages and chosen inputs (uninsane.org)
+            (import ./pkgs { pkgs = allPkgs; }) // {
+              inherit (allPkgs) uninsane-dot-org;
+            }
+          )
+        )
+        # self.legacyPackages;
+        { inherit (self.legacyPackages) x86_64-linux; }
+      ;
+
+      apps."x86_64-linux" =
+        let
+          pkgs = self.legacyPackages."x86_64-linux";
+          deployScript = action: pkgs.writeShellScript "deploy-moby" ''
+            nixos-rebuild --flake '.#moby' build $@
+            sudo nix sign-paths -r -k /run/secrets/nix_serve_privkey $(readlink ./result)
+            nixos-rebuild --flake '.#moby' ${action} --target-host colin@moby-hn --use-remote-sudo $@
+          '';
+        in {
+          update-feeds = {
+            type = "app";
+            program = "${pkgs.feeds.updateScript}";
+          };
+
+          init-feed = {
+            # use like `nix run '.#init-feed' uninsane.org`
+            type = "app";
+            program = "${pkgs.feeds.initFeedScript}";
+          };
+
+          deploy-moby-test = {
+            # `nix run '.#deploy-moby-test'`
+            type = "app";
+            program = ''${deployScript "test"}'';
+          };
+          deploy-moby = {
+            # `nix run '.#deploy-moby-switch'`
+            type = "app";
+            program = ''${deployScript "switch"}'';
+          };
+        };
+
+      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/README.md

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

hosts/by-name/desko/default.nix

@@ -4,26 +4,27 @@
     ./fs.nix
   ];
 
-  # sane.packages.enableDevPkgs = true;
+  sops.secrets.colin-passwd.neededForUsers = true;
+
+  sane.roles.build-machine.enable = true;
+  sane.roles.ac = true;
+  sane.roles.client = true;
+  sane.roles.dev-machine = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."desko".wg-home.ip;
+  sane.services.duplicity.enable = true;
+  sane.services.nixserve.secretKeyFile = config.sops.secrets.nix_serve_privkey.path;
 
   sane.gui.sway.enable = true;
-  sane.services.duplicity.enable = true;
-  sane.services.nixserve.enable = true;
-  sane.services.nixserve.sopsFile = ../../secrets/desko.yaml;
-  sane.impermanence.enable = true;
+  sane.programs.iphoneUtils.enableFor.user.colin = true;
+
+  sane.programs.guiApps.suggestedPrograms = [ "desktopGuiApps" ];
 
   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;
-  users.users.usbmux.uid = config.sane.allocations.usbmux-uid;
-  users.groups.usbmux.gid = config.sane.allocations.usbmux-gid;
-
-  sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/desko.yaml;
-    neededForUsers = true;
-  };
 
   # don't enable wifi by default: it messes with connectivity.
   systemd.services.iwd.enable = false;
@@ -35,15 +36,9 @@
   services.snapper.configs.nix = {
     # TODO: for the impermanent setup, we'd prefer to just do /nix/persist,
     # but that also requires setting up the persist dir as a subvol
-    subvolume = "/nix";
+    SUBVOLUME = "/nix";
     # TODO: ALLOW_USERS doesn't seem to work. still need `sudo snapper -c nix list`
-    extraConfig = ''
-      ALLOW_USERS = "colin";
-    '';
-  };
-
-  sops.secrets.duplicity_passphrase = {
-    sopsFile = ../../secrets/desko.yaml;
+    ALLOW_USERS = [ "colin" ];
   };
 
   programs.steam = {
@@ -52,7 +47,7 @@
     remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
     dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
   };
-  sane.impermanence.home-dirs = [
+  sane.user.persist.plaintext = [
     ".steam"
     ".local/share/Steam"
   ];

hosts/by-name/desko/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp for building large nix things.
   # a cross-compiled kernel, particularly, will easily use 30+GB of tmp
   fileSystems."/tmp" = {

hosts/by-name/lappy/default.nix

@@ -1,22 +1,26 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 {
   imports = [
     ./fs.nix
+    ./polyfill.nix
   ];
 
-  # sane.packages.enableDevPkgs = true;
+  sane.roles.client = true;
+  sane.roles.dev-machine = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."lappy".wg-home.ip;
 
-  # sane.users.guest.enable = true;
+  # sane.guest.enable = true;
   sane.gui.sway.enable = true;
-  sane.impermanence.enable = true;
-  sane.nixcache.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
-  sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/lappy.yaml;
-    neededForUsers = true;
-  };
+  sane.programs.guiApps.suggestedPrograms = [
+    "desktopGuiApps"
+    "stepmania"
+  ];
+
+  sops.secrets.colin-passwd.neededForUsers = true;
 
   # default config: https://man.archlinux.org/man/snapper-configs.5
   # defaults to something like:
@@ -25,7 +29,8 @@
   services.snapper.configs.nix = {
     # TODO: for the impermanent setup, we'd prefer to just do /nix/persist,
     # but that also requires setting up the persist dir as a subvol
-    subvolume = "/nix";
+    SUBVOLUME = "/nix";
+    ALLOW_USERS = [ "colin" ];
   };
 
   # TODO: only here for debugging

hosts/by-name/lappy/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp of default size (half RAM) for building large nix things
   fileSystems."/tmp" = {
     device = "none";

hosts/by-name/lappy/polyfill.nix

@@ -0,0 +1,32 @@
+# doesn't actually *enable* anything,
+# but sets up any modules such that if they *were* enabled, they'll act as expected.
+{ ... }:
+{
+  sane.gui.sxmo = {
+    greeter = "sway";
+    settings = {
+      # XXX: make sure the user is part of the `input` group!
+      SXMO_LISGD_INPUT_DEVICE = "/dev/input/by-id/usb-Wacom_Co._Ltd._Pen_and_multitouch_sensor-event-if00";
+      # these identifiers are from `swaymsg -t get_inputs`
+      SXMO_VOLUME_BUTTON = "1:1:AT_Translated_Set_2_keyboard";
+      # SXMO_VOLUME_BUTTON = "none";
+      SXMO_POWER_BUTTON = "0:1:Power_Button";
+      # SXMO_POWER_BUTTON = "none";
+      SXMO_DISABLE_LEDS = "1";
+      SXMO_UNLOCK_IDLE_TIME = "120";  # default
+      # sxmo tries to determine device type from /proc/device-tree/compatible,
+      # but that doesn't seem to exist on NixOS?  (or maybe it just doesn't exist
+      # on non-aarch64 builds).
+      # the device type informs (at least):
+      # - SXMO_WIFI_MODULE
+      # - SXMO_RTW_SCAN_INTERVAL
+      # - SXMO_SYS_FILES
+      # - SXMO_TOUCHSCREEN_ID
+      # - SXMO_MONITOR
+      # - SXMO_ALSA_CONTROL_NAME
+      # - SXMO_SWAY_SCALE
+      # see <repo:mil/sxmo-utils:scripts/deviceprofiles>
+      # SXMO_DEVICE_NAME = "pine64,pinephone-1.2";
+    };
+  };
+}

hosts/by-name/moby/default.nix

@@ -1,42 +1,43 @@
-{ config, pkgs, lib, mobile-nixos, ... }:
+{ config, pkgs, lib, ... }:
 {
   imports = [
     ./firmware.nix
     ./fs.nix
     ./kernel.nix
+    ./polyfill.nix
   ];
 
-  # cross-compiled documentation is *slow*.
-  # no obvious way to natively compile docs (2022/09/29).
-  # entrypoint is nixos/modules/misc/documentation.nix
-  # doc building happens in nixos/doc/manual/default.nix
-  # TODO: we could *maybe* inject pkgs.buildPackages.xyz = cross.buildPackages.xyz?
-  documentation.nixos.enable = false;
+  sane.roles.client = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."moby".wg-home.ip;
 
   # XXX colin: phosh doesn't work well with passwordless login,
   # so set this more reliable default password should anything go wrong
   users.users.colin.initialPassword = "147147";
   services.getty.autologinUser = "root";  # allows for emergency maintenance?
 
-  sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/moby.yaml;
-    neededForUsers = true;
+  sops.secrets.colin-passwd.neededForUsers = true;
+
+  sane.programs.web-browser.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;
+    # addons.sideberry.enable = false;
   };
 
-  # usability compromises
-  sane.impermanence.home-dirs = [
-    config.sane.web-browser.dotDir
+  sane.user.persist.plaintext = [
+    # TODO: make this just generally conditional upon pulse being enabled?
     ".config/pulse"  # persist pulseaudio volume
   ];
 
-  # sane.packages.enableGuiPkgs = false;  # XXX faster builds/imaging for debugging
-  sane.packages.extraUserPkgs = [
-    pkgs.plasma5Packages.konsole  # terminal
-  ];
-
-  sane.nixcache.enable = true;
-  sane.impermanence.enable = true;
   sane.gui.phosh.enable = true;
+  # sane.programs.consoleUtils.enableFor.user.colin = false;
+  # sane.programs.guiApps.enableFor.user.colin = false;
+  sane.programs.sequoia.enableFor.user.colin = false;
+  sane.programs.tuiApps.enableFor.user.colin = false;  # visidata, others, don't compile well
 
   boot.loader.efi.canTouchEfiVariables = false;
   # /boot space is at a premium. default was 20.
@@ -53,9 +54,10 @@
 
   # 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.
-  # the default CMA seems to be 32M. we could probably get by with as little as 64M, and safely with 128M.
+  # 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: maybe a memory leak?
   # `cat /proc/meminfo` to see CmaTotal/CmaFree if interested in tuning this.
-  boot.kernelParams = [ "cma=256M" ];
+  boot.kernelParams = [ "cma=512M" ];
 
   # mobile-nixos' /lib/firmware includes:
   #   rtl_bt          (bluetooth)

hosts/by-name/moby/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   fileSystems."/nix" = {
     device = "/dev/disk/by-uuid/1f1271f8-53ce-4081-8a29-60a4a6b5d6f9";
     fsType = "btrfs";

hosts/by-name/moby/kernel.nix

@@ -0,0 +1,83 @@
+{ lib, pkgs, ... }:
+let
+  # use the last commit on the 5.18 branch (5.18.14)
+  # manjaro's changes between kernel patch versions tend to be minimal if any.
+  manjaroBase = "https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/raw/25bd828cd47b1c6e09fcbcf394a649b89d2876dd";
+  manjaroPatch = name: sha256: {
+    inherit name;
+    patch = pkgs.fetchpatch {
+      inherit name;
+      url = "${manjaroBase}/${name}?inline=false";
+      inherit sha256;
+    };
+  };
+
+  # the idea for patching off Manjaro's kernel comes from jakewaksbaum:
+  # - https://git.sr.ht/~jakewaksbaum/pi/tree/af20aae5653545d6e67a459b59ee3e1ca8a680b0/item/kernel/default.nix
+  # - he later abandoned this, i think because he's using the Pinephone Pro which received mainline support.
+  manjaroPatches = [
+    (manjaroPatch
+      "1001-arm64-dts-allwinner-add-hdmi-sound-to-pine-devices.patch"
+      "sha256-DApd791A+AxB28Ven/MVAyuyVphdo8KQDx8O7oxVPnc="
+    )
+    # these patches below are critical to enable wifi (RTL8723CS)
+    # - the alternative is a wholly forked kernel by megi/megous:
+    #   - https://xnux.eu/howtos/build-pinephone-kernel.html#toc-how-to-build-megi-s-pinehpone-kernel
+    # - i don't know if these patches are based on megi's or original
+    (manjaroPatch
+      "2001-Bluetooth-Add-new-quirk-for-broken-local-ext-features.patch"
+      "sha256-CExhJuUWivegxPdnzKINEsKrMFx/m/1kOZFmlZ2SEOc="
+    )
+    (manjaroPatch
+      "2002-Bluetooth-btrtl-add-support-for-the-RTL8723CS.patch"
+      "sha256-dDdvOphTcP/Aog93HyH+L9m55laTgtjndPSE4/rnzUA="
+    )
+    (manjaroPatch
+      "2004-arm64-dts-allwinner-enable-bluetooth-pinetab-pinepho.patch"
+      "sha256-o43P3WzXyHK1PF+Kdter4asuyGAEKO6wf5ixcco2kCQ="
+    )
+    # XXX: this one has a Makefile, which hardcodes /sbin/depmod:
+    # - drivers/staging/rtl8723cs/Makefile
+    # - not sure if this is problematic?
+    (manjaroPatch
+      "2005-staging-add-rtl8723cs-driver.patch"
+      "sha256-6ywm3dQQ5JYl60CLKarxlSUukwi4QzqctCj3tVgzFbo="
+    )
+  ];
+in
+{
+  # use Megi's kernel:
+  # even with the Manjaro patches, stock 5.18 has a few issues on Pinephone:
+  # - no battery charging
+  # - phone rotation sensor is off by 90 degrees
+  # - ambient light sensor causes screen brightness to be shakey
+  # - phosh greeter may not appear after wake from sleep
+  boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-megous;
+
+  # alternatively, use nixos' kernel and add the stuff we want:
+  # # cross-compilation optimization:
+  # boot.kernelPackages =
+  #   let p = (import nixpkgs { localSystem = "x86_64-linux"; });
+  #   in p.pkgsCross.aarch64-multiplatform.linuxPackages_5_18;
+  # # non-cross:
+  # # boot.kernelPackages = pkgs.linuxPackages_5_18;
+
+  # boot.kernelPatches = manjaroPatches ++ [
+  #   (patchDefconfig kernelConfig)
+  # ];
+
+  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 :-(
+  };
+}

hosts/by-name/moby/polyfill.nix

@@ -0,0 +1,23 @@
+{ sane-lib, ... }:
+{
+  sane.gui.sxmo = {
+    settings = {
+      # touch screen
+      SXMO_LISGD_INPUT_DEVICE = "/dev/input/by-path/platform-1c2ac00.i2c-event";
+      # vol and power are detected correctly by upstream
+    };
+  };
+  # TODO: only populate this if sxmo is enabled?
+  sane.user.fs.".config/sxmo/profile" = sane-lib.fs.wantedText ''
+    # sourced by sxmo_init.sh
+    . sxmo_common.sh
+
+    export SXMO_SWAY_SCALE=1.5
+    export SXMO_ROTATION_GRAVITY=12800
+
+    export DEFAULT_COUNTRY=US
+    export BROWSER=librewolf
+
+    export SXMO_BG_IMG="$(xdg_data_path sxmo/background.jpg)"
+  '';
+}

hosts/by-name/rescue/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 {
   imports = [
     ./fs.nix
@@ -7,9 +7,8 @@
   boot.loader.generic-extlinux-compatible.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
-
-  users.users.dhcpcd.uid = config.sane.allocations.dhcpcd-uid;
-  users.groups.dhcpcd.gid = config.sane.allocations.dhcpcd-gid;
+  # sane.persist.enable = false;  # TODO: disable (but run `nix flake check` to ensure it works!)
+  sane.nixcache.enable = false;  # don't want to be calling out to dead machines that we're *trying* to rescue
 
   # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
   system.stateVersion = "21.05";

hosts/by-name/servo/default.nix

@@ -1,29 +1,36 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [
     ./fs.nix
     ./net.nix
-    ./users.nix
     ./services
   ];
 
-  sane.packages.extraUserPkgs = [
+  sane.programs = {
     # for administering services
-    pkgs.matrix-synapse
-    pkgs.freshrss
-  ];
-  sane.impermanence.enable = true;
+    freshrss.enableFor.user.colin = true;
+    matrix-synapse.enableFor.user.colin = true;
+    signaldctl.enableFor.user.colin = true;
+  };
+
+  sane.roles.ac = true;
+  sane.roles.build-machine.enable = true;
+  sane.roles.build-machine.emulation = false;
+  sane.zsh.showDeadlines = false;  # ~/knowledge doesn't always exist
   sane.services.dyn-dns.enable = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.enableWan = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."servo".wg-home.ip;
   # sane.services.duplicity.enable = true;  # TODO: re-enable after HW upgrade
 
+  # automatically log in at the virtual consoles.
+  # using root here makes sure we always have an escape hatch
+  services.getty.autologinUser = "root";
+
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
-  sops.secrets.duplicity_passphrase = {
-    sopsFile = ../../secrets/servo.yaml;
-  };
-
   # both transmission and ipfs try to set different net defaults.
   # we just use the most aggressive of the two here:
   boot.kernel.sysctl = {

hosts/by-name/servo/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp for building large nix things
   fileSystems."/tmp" = {
     device = "none";
@@ -27,7 +27,7 @@
   };
 
   # slow, external storage (for archiving, etc)
-  fileSystems."/nix/persist/ext" = {
+  fileSystems."/mnt/persist/ext" = {
     device = "/dev/disk/by-uuid/aa272cff-0fcc-498e-a4cb-0d95fb60631b";
     fsType = "btrfs";
     options = [
@@ -36,27 +36,31 @@
     ];
   };
 
-  sane.impermanence.dirs = [
+  sane.persist.stores."ext" = {
+    origin = "/mnt/persist/ext/persist";
+    storeDescription = "external HDD storage";
+  };
+  sane.fs."/mnt/persist/ext".mount = {};
+
+  sane.persist.sys.plaintext = [
     # TODO: this is overly broad; only need media and share directories to be persisted
     { user = "colin"; group = "users"; directory = "/var/lib/uninsane"; }
   ];
-  # direct these media directories to external storage
-  environment.persistence."/nix/persist/ext/persist" = {
-    directories = [
-      ({
-        user = "colin";
-        group = "users";
-        mode = "0777";
-        directory = "/var/lib/uninsane/media/Videos";
-      })
-      ({
-        user = "colin";
-        group = "users";
-        mode = "0777";
-        directory = "/var/lib/uninsane/media/freeleech";
-      })
-    ];
-  };
+  # make sure large media is stored to the HDD
+  sane.persist.sys.ext = [
+    {
+      user = "colin";
+      group = "users";
+      mode = "0777";
+      directory = "/var/lib/uninsane/media/Videos";
+    }
+    {
+      user = "colin";
+      group = "users";
+      mode = "0777";
+      directory = "/var/lib/uninsane/media/freeleech";
+    }
+  ];
 
   # in-memory compressed RAM (seems to be dynamically sized)
   # zramSwap = {

hosts/by-name/servo/net.nix

@@ -3,6 +3,8 @@
 {
   networking.domain = "uninsane.org";
 
+  sane.services.wan-ports.openFirewall = true;
+
   # The global useDHCP flag is deprecated, therefore explicitly set to false here.
   # Per-interface useDHCP will be mandatory in the future, so this generated config
   # replicates the default behaviour.
@@ -11,9 +13,6 @@
   # XXX colin: probably don't need this. wlan0 won't be populated unless i touch a value in networking.interfaces.wlan0
   networking.wireless.enable = false;
 
-  # networking.firewall.enable = false;
-  networking.firewall.enable = true;
-
   # this is needed to forward packets from the VPN to the host
   boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
 
@@ -33,6 +32,14 @@
   # - getent ahostsv4 www.google.com
   # - try fix: <https://serverfault.com/questions/765989/connect-to-3rd-party-vpn-server-but-dont-use-it-as-the-default-route/766290#766290>
   services.resolved.enable = true;
+  # without DNSSEC:
+  # - dig matrix.org => works
+  # - curl https://matrix.org => works
+  # with default DNSSEC:
+  # - dig matrix.org => works
+  # - curl https://matrix.org => fails
+  # i don't know why. this might somehow be interfering with the DNS run on this device (trust-dns)
+  services.resolved.dnssec = "false";
   networking.nameservers = [
     # use systemd-resolved resolver
     # full resolver (which understands /etc/hosts) lives on 127.0.0.53
@@ -52,18 +59,18 @@
 
   # services.resolved.extraConfig = ''
   #   # docs: `man resolved.conf`
-  #   # DNS servers to use via the `wg0` interface.
+  #   # DNS servers to use via the `wg-ovpns` interface.
   #   #   i hope that from the root ns, these aren't visible.
-  #   DNS=46.227.67.134%wg0 192.165.9.158%wg0
+  #   DNS=46.227.67.134%wg-ovpns 192.165.9.158%wg-ovpns
   #   FallbackDNS=1.1.1.1 9.9.9.9
   # '';
 
   # OVPN CONFIG (https://www.ovpn.com):
   # DOCS: https://nixos.wiki/wiki/WireGuard
-  # if you `systemctl restart wireguard-wg0`, make sure to also restart any other services in `NetworkNamespacePath = .../ovpns`.
+  # if you `systemctl restart wireguard-wg-ovpns`, make sure to also restart any other services in `NetworkNamespacePath = .../ovpns`.
   # TODO: why not create the namespace as a seperate operation (nix config for that?)
   networking.wireguard.enable = true;
-  networking.wireguard.interfaces.wg0 = let
+  networking.wireguard.interfaces.wg-ovpns = let
     ip = "${pkgs.iproute2}/bin/ip";
     in-ns = "${ip} netns exec ovpns";
     iptables = "${pkgs.iptables}/bin/iptables";
@@ -159,13 +166,10 @@
   # create a new routing table that we can use to proxy traffic out of the root namespace
   # through the ovpns namespace, and to the WAN via VPN.
   networking.iproute2.rttablesExtraConfig = ''
-  5 ovpns
+    5 ovpns
   '';
   networking.iproute2.enable = true;
 
-  sops.secrets."wg_ovpns_privkey" = {
-    sopsFile = ../../secrets/servo.yaml;
-  };
 
   # HURRICANE ELECTRIC CONFIG:
   # networking.sits = {

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

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

hosts/by-name/servo/services/ddns-afraid.nix

@@ -6,7 +6,7 @@ lib.mkIf false
   systemd.services.ddns-afraid = {
     description = "update dynamic DNS entries for freedns.afraid.org";
     serviceConfig = {
-      EnvironmentFile = config.sops.secrets.ddns_afraid.path;
+      EnvironmentFile = config.sops.secrets."ddns_afraid.env".path;
       # TODO: ProtectSystem = "strict";
       # TODO: ProtectHome = "full";
       # TODO: PrivateTmp = true;
@@ -24,8 +24,4 @@ lib.mkIf false
       OnUnitActiveSec = "10min";
     };
   };
-
-  sops.secrets."ddns_afraid" = {
-    sopsFile = ../../../secrets/servo.yaml;
-  };
 }

hosts/by-name/servo/services/ddns-he.nix

@@ -6,7 +6,7 @@ lib.mkIf false
   systemd.services.ddns-he = {
     description = "update dynamic DNS entries for HurricaneElectric";
     serviceConfig = {
-      EnvironmentFile = config.sops.secrets.ddns_he.path;
+      EnvironmentFile = config.sops.secrets."ddns_he.env".path;
       # TODO: ProtectSystem = "strict";
       # TODO: ProtectHome = "full";
       # TODO: PrivateTmp = true;
@@ -27,8 +27,4 @@ lib.mkIf false
       OnUnitActiveSec = "10min";
     };
   };
-
-  sops.secrets."ddns_he" = {
-    sopsFile = ../../../secrets/servo.yaml;
-  };
 }

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

@@ -1,8 +1,10 @@
 { ... }:
 {
   imports = [
+    ./calibre.nix
     ./ddns-afraid.nix
     ./ddns-he.nix
+    ./email
     ./ejabberd.nix
     ./freshrss.nix
     ./gitea.nix
@@ -11,12 +13,14 @@
     ./jackett.nix
     ./jellyfin.nix
     ./kiwix-serve.nix
+    ./komga.nix
+    ./lemmy.nix
     ./matrix
     ./navidrome.nix
     ./nixserve.nix
     ./nginx.nix
+    ./pict-rs.nix
     ./pleroma.nix
-    ./postfix.nix
     ./postgres.nix
     ./prosody.nix
     ./transmission.nix

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

@@ -19,10 +19,10 @@
 # XXX: avatar support works in MUCs but not DMs
 # lib.mkIf false
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "ejabberd"; group = "ejabberd"; directory = "/var/lib/ejabberd"; }
   ];
-  networking.firewall.allowedTCPPorts = [
+  sane.services.wan-ports.tcp = [
     3478  # STUN/TURN
     5222  # XMPP  client -> server
     5223  # XMPPS client -> server (XMPP over TLS)
@@ -33,19 +33,22 @@
     5349  # STUN/TURN (TLS)
     5443  # web services (file uploads, websockets, admin)
   ];
-  networking.firewall.allowedUDPPorts = [
+  sane.services.wan-ports.udp = [
     3478  # STUN/TURN
   ];
+  # TODO: forward these TURN ports!
   networking.firewall.allowedTCPPortRanges = [{
     from = 49152;  # TURN
-    to = 65535;
+    to = 49408;
   }];
   networking.firewall.allowedUDPPortRanges = [{
     from = 49152;  # TURN
-    to = 65535;
+    to = 49408;
   }];
 
   # provide access to certs
+  # TODO: this should just be `acme`. then we also add nginx to the `acme` group.
+  #   why is /var/lib/acme/* owned by `nginx` group??
   users.users.ejabberd.extraGroups = [ "nginx" ];
 
   security.acme.certs."uninsane.org".extraDomainNames = [
@@ -75,33 +78,33 @@
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
     # XXX: SRV records have to point to something with a A/AAAA record; no CNAMEs
-    A."xmpp" =                [ "%NATIVE%" ];
-    CNAME."muc.xmpp" =        [ "xmpp" ];
-    CNAME."pubsub.xmpp" =     [ "xmpp" ];
-    CNAME."upload.xmpp" =     [ "xmpp" ];
-    CNAME."vjid.xmpp" =       [ "xmpp" ];
+    A."xmpp" =                "%NATIVE%";
+    CNAME."muc.xmpp" =        "xmpp";
+    CNAME."pubsub.xmpp" =     "xmpp";
+    CNAME."upload.xmpp" =     "xmpp";
+    CNAME."vjid.xmpp" =       "xmpp";
 
     # _Service._Proto.Name    TTL Class SRV    Priority Weight Port Target
     # - <https://xmpp.org/extensions/xep-0368.html>
     # something's requesting the SRV records for muc.xmpp, so let's include it
     # nothing seems to request XMPP SRVs for the other records (except @)
     # lower numerical priority field tells clients to prefer this method
-    SRV."_xmpps-client._tcp.muc.xmpp" =       [ "3 50 5223 xmpp" ];
-    SRV."_xmpps-server._tcp.muc.xmpp" =       [ "3 50 5270 xmpp" ];
-    SRV."_xmpp-client._tcp.muc.xmpp" =        [ "5 50 5222 xmpp" ];
-    SRV."_xmpp-server._tcp.muc.xmpp" =        [ "5 50 5269 xmpp" ];
+    SRV."_xmpps-client._tcp.muc.xmpp" =       "3 50 5223 xmpp";
+    SRV."_xmpps-server._tcp.muc.xmpp" =       "3 50 5270 xmpp";
+    SRV."_xmpp-client._tcp.muc.xmpp" =        "5 50 5222 xmpp";
+    SRV."_xmpp-server._tcp.muc.xmpp" =        "5 50 5269 xmpp";
 
-    SRV."_xmpps-client._tcp" =                [ "3 50 5223 xmpp" ];
-    SRV."_xmpps-server._tcp" =                [ "3 50 5270 xmpp" ];
-    SRV."_xmpp-client._tcp" =                 [ "5 50 5222 xmpp" ];
-    SRV."_xmpp-server._tcp" =                 [ "5 50 5269 xmpp" ];
+    SRV."_xmpps-client._tcp" =                "3 50 5223 xmpp";
+    SRV."_xmpps-server._tcp" =                "3 50 5270 xmpp";
+    SRV."_xmpp-client._tcp" =                 "5 50 5222 xmpp";
+    SRV."_xmpp-server._tcp" =                 "5 50 5269 xmpp";
 
-    SRV."_stun._udp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_stun._tcp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_stuns._tcp" =                       [ "5 50 5349 xmpp" ];
-    SRV."_turn._udp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_turn._tcp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_turns._tcp" =                       [ "5 50 5349 xmpp" ];
+    SRV."_stun._udp" =                        "5 50 3478 xmpp";
+    SRV."_stun._tcp" =                        "5 50 3478 xmpp";
+    SRV."_stuns._tcp" =                       "5 50 5349 xmpp";
+    SRV."_turn._udp" =                        "5 50 3478 xmpp";
+    SRV."_turn._tcp" =                        "5 50 3478 xmpp";
+    SRV."_turns._tcp" =                       "5 50 5349 xmpp";
   };
 
   # TODO: allocate UIDs/GIDs ?

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

@@ -0,0 +1,37 @@
+# nix configs to reference:
+# - <https://gitlab.com/simple-nixos-mailserver/nixos-mailserver>
+# - <https://github.com/nix-community/nur-combined/-/tree/master/repos/eh5/machines/srv-m/mail-rspamd.nix>
+#   - postfix / dovecot / rspamd / stalwart-jmap / sogo
+#
+# rspamd:
+# - nixos: <https://nixos.wiki/wiki/Rspamd>
+# - guide: <https://rspamd.com/doc/quickstart.html>
+# - non-nixos example: <https://dataswamp.org/~solene/2021-07-13-smtpd-rspamd.html>
+#
+#
+# my rough understanding of the pieces:
+# - postfix handles SMTP protocol with the rest of the world.
+# - dovecot implements IMAP protocol.
+#   - client auth (i.e. validate that user@uninsane.org is who they claim)
+#   - "folders" (INBOX, JUNK) are internal to dovecot?
+#     or where do folders live, on-disk?
+#
+# - non-local clients (i.e. me) interact with BOTH postfix and dovecot, but primarily dovecot:
+#   - mail reading is done via IMAP (so, dovecot)
+#   - mail sending is done via SMTP/submission port (so, postfix)
+#     - but postfix delegates authorization of that outgoing mail to dovecot, on the server side
+#
+# - local clients (i.e. sendmail) interact only with postfix
+
+{ ... }:
+{
+  imports = [
+    ./dovecot.nix
+    ./postfix.nix
+  ];
+
+
+  #### SPAM FILTERING
+  # services.rspamd.enable = true;
+  # services.rspamd.postfix.enable = true;
+}

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

@@ -0,0 +1,135 @@
+# dovecot config options: <https://doc.dovecot.org/configuration_manual/>
+#
+# sieve docs:
+# - sieve language examples: <https://doc.dovecot.org/configuration_manual/sieve/examples/>
+# - sieve protocol/language: <https://proton.me/support/sieve-advanced-custom-filters>
+
+{ config, lib, pkgs, ... }:
+{
+  sane.services.wan-ports.tcp = [
+    # exposed over non-vpn imap.uninsane.org
+    143  # IMAP
+    993  # IMAPS
+  ];
+
+  # exists only to manage certs for dovecot
+  services.nginx.virtualHosts."imap.uninsane.org" = {
+    enableACME = true;
+  };
+
+  sane.services.trust-dns.zones."uninsane.org".inet = {
+    CNAME."imap" = "native";
+  };
+
+  sops.secrets."dovecot_passwd" = {
+    owner = config.users.users.dovecot2.name;
+    # TODO: debug why mail can't be sent without this being world-readable
+    mode = "0444";
+  };
+
+  # inspired by https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/
+  services.dovecot2.enable = true;
+  # services.dovecot2.enableLmtp = true;
+  services.dovecot2.sslServerCert = "/var/lib/acme/imap.uninsane.org/fullchain.pem";
+  services.dovecot2.sslServerKey = "/var/lib/acme/imap.uninsane.org/key.pem";
+  services.dovecot2.enablePAM = false;
+
+  # sieve scripts require me to set a user for... idk why?
+  services.dovecot2.mailUser = "colin";
+  services.dovecot2.mailGroup = "users";
+  users.users.colin.isSystemUser = lib.mkForce false;
+
+  services.dovecot2.extraConfig =
+  let
+    passwdFile = config.sops.secrets.dovecot_passwd.path;
+  in
+    ''
+    passdb {
+      driver = passwd-file
+      args = ${passwdFile}
+    }
+    userdb {
+      driver = passwd-file
+      args = ${passwdFile}
+    }
+
+    # allow postfix to query our auth db
+    service auth {
+      unix_listener auth {
+        mode = 0660
+        user = postfix
+        group = postfix
+      }
+    }
+    auth_mechanisms = plain login
+
+    # accept incoming messaging from postfix
+    # service lmtp {
+    #   unix_listener dovecot-lmtp {
+    #     mode = 0600
+    #     user = postfix
+    #     group = postfix
+    #   }
+    # }
+
+    # plugin {
+    #   sieve_plugins = sieve_imapsieve
+    # }
+
+    mail_debug = yes
+    auth_debug = yes
+    # verbose_ssl = yes
+  '';
+
+  services.dovecot2.mailboxes = {
+    # special-purpose mailboxes: "All" "Archive" "Drafts" "Flagged" "Junk" "Sent" "Trash"
+    # RFC6154 describes these special mailboxes: https://www.ietf.org/rfc/rfc6154.html
+    # how these boxes are treated is 100% up to the client and server to decide.
+    # client behavior:
+    # iOS
+    #   - Drafts: ?
+    #   - Sent: works
+    #   - Trash: works
+    #   - Junk: works ("mark" -> "move to Junk")
+    # aerc
+    #   - Drafts: works
+    #   - Sent: works
+    #   - Trash: no; deleted messages are actually deleted
+    #       use `:move trash` instead
+    #   - Junk: ?
+    # Sent mailbox: all sent messages are copied to it. unclear if this happens server-side or client-side.
+    Drafts = { specialUse = "Drafts"; auto = "create"; };
+    Sent = { specialUse = "Sent"; auto = "create"; };
+    Trash = { specialUse = "Trash"; auto = "create"; };
+    Junk = { specialUse = "Junk"; auto = "create"; };
+  };
+
+  services.dovecot2.mailPlugins = {
+    perProtocol = {
+      # imap.enable = [
+      #   "imap_sieve"
+      # ];
+      lda.enable = [
+        "sieve"
+      ];
+      # lmtp.enable = [
+      #   "sieve"
+      # ];
+    };
+  };
+  services.dovecot2.modules = [
+    pkgs.dovecot_pigeonhole  # enables sieve execution (?)
+  ];
+  services.dovecot2.sieveScripts = {
+    # if any messages fail to pass (or lack) DKIM, move them to Junk
+    # XXX the key name ("after") is only used to order sieve execution/ordering
+    after = builtins.toFile "ensuredkim.sieve" ''
+      require "fileinto";
+
+      if not header :contains "Authentication-Results" "dkim=pass" {
+        fileinto "Junk";
+        stop;
+      }
+    '';
+  };
+}

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

@@ -1,4 +1,6 @@
-{ config, lib, ... }:
+# postfix config options: <https://www.postfix.org/postconf.5.html>
+
+{ lib, pkgs, ... }:
 
 let
   submissionOptions = {
@@ -16,7 +18,7 @@ let
   };
 in
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "opendkim"; group = "opendkim"; directory = "/var/lib/opendkim"; }
     { user = "root"; group = "root"; directory = "/var/lib/postfix"; }
@@ -26,18 +28,13 @@ in
     # "/var/lib/dovecot"
   ];
 
-  networking.firewall.allowedTCPPorts = [
+  sane.services.wan-ports.tcp = [
+    # exposed over vpn mx.uninsane.org
     25   # SMTP
-    143  # IMAP
     465  # SMTPS
     587  # SMTPS/submission
-    993  # IMAPS
   ];
 
-  # exists only to manage certs for dovecot
-  services.nginx.virtualHosts."imap.uninsane.org" = {
-    enableACME = true;
-  };
   # exists only to manage certs for Postfix
   services.nginx.virtualHosts."mx.uninsane.org" = {
     enableACME = true;
@@ -45,22 +42,21 @@ in
 
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    MX."@" = [ "10 mx.uninsane.org." ];
+    MX."@" = "10 mx.uninsane.org.";
     # XXX: RFC's specify that the MX record CANNOT BE A CNAME
-    A."mx" = [ "185.157.162.178" ];
-    CNAME."imap" = [ "native" ];
+    A."mx" = "185.157.162.178";
 
     # Sender Policy Framework:
     #   +mx     => mail passes if it originated from the MX
     #   +a      => mail passes if it originated from the A address of this domain
     #   +ip4:.. => mail passes if it originated from this IP
     #   -all    => mail fails if none of these conditions were met
-    TXT."@" = [ "v=spf1 a mx -all" ];
+    TXT."@" = "v=spf1 a mx -all";
 
     # DKIM public key:
-    TXT."mx._domainkey" = [
-      "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkSyMufc2KrRx3j17e/LyB+3eYSBRuEFT8PUka8EDX04QzCwDPdkwgnj3GNDvnB5Ktb05Cf2SJ/S1OLqNsINxJRWtkVfZd/C339KNh9wrukMKRKNELL9HLUw0bczOI4gKKFqyrRE9qm+4csCMAR79Te9FCjGV/jVnrkLdPT0GtFwIDAQAB"
-    ];
+    TXT."mx._domainkey" =
+      "v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkSyMufc2KrRx3j17e/LyB+3eYSBRuEFT8PUka8EDX04QzCwDPdkwgnj3GNDvnB5Ktb05Cf2SJ/S1OLqNsINxJRWtkVfZd/C339KNh9wrukMKRKNELL9HLUw0bczOI4gKKFqyrRE9qm+4csCMAR79Te9FCjGV/jVnrkLdPT0GtFwIDAQAB"
+    ;
 
     # DMARC fields <https://datatracker.ietf.org/doc/html/rfc7489>:
     #   p=none|quarantine|reject: what to do with failures
@@ -75,9 +71,9 @@ in
     #   pct = sampling ratio for punishing failures (default 100 for 100%)
     #   rf = report format
     #   ri = report interval
-    TXT."_dmarc" = [
+    TXT."_dmarc" =
       "v=DMARC1;p=quarantine;sp=reject;rua=mailto:admin+mail@uninsane.org;ruf=mailto:admin+mail@uninsane.org;fo=1:d:s"
-    ];
+    ;
   };
 
   services.postfix.enable = true;
@@ -92,32 +88,56 @@ in
     @uninsane.org colin
   '';
 
-  services.postfix.extraConfig = ''
+  services.postfix.config = {
     # smtpd_milters = local:/run/opendkim/opendkim.sock
     # milter docs: http://www.postfix.org/MILTER_README.html
-    # mail filters for receiving email and authorized SMTP clients
+    # mail filters for receiving email and from authorized SMTP clients (i.e. via submission)
     # smtpd_milters = inet:185.157.162.190:8891
-    smtpd_milters = unix:/run/opendkim/opendkim.sock
+    # opendkim.sock will add a Authentication-Results header, with `dkim=pass|fail|...` value to received messages
+    smtpd_milters = "unix:/run/opendkim/opendkim.sock";
     # mail filters for sendmail
-    non_smtpd_milters = $smtpd_milters
-    milter_default_action = accept
-    inet_protocols = ipv4
-    smtp_tls_security_level = may
-  '';
+    non_smtpd_milters = "$smtpd_milters";
+
+    # what to do when a milter exits unexpectedly:
+    milter_default_action = "accept";
+
+    inet_protocols = "ipv4";
+    smtp_tls_security_level = "may";
+
+    # hand received mail over to dovecot so that it can run sieves & such
+    mailbox_command = ''${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$SENDER" -a "$RECIPIENT"'';
+
+    # hand received mail over to dovecot
+    # virtual_alias_maps = [
+    #   "hash:/etc/postfix/virtual"
+    # ];
+    # mydestination = "";
+    # virtual_mailbox_domains = [ "localhost" "uninsane.org" ];
+    # # virtual_mailbox_maps = "hash:/etc/postfix/virtual";
+    # virtual_transport = "lmtp:unix:/run/dovecot2/dovecot-lmtp";
+
+    # anti-spam options: <https://www.postfix.org/SMTPD_ACCESS_README.html>
+    # reject_unknown_sender_domain: causes postfix to `dig <sender> MX` and make sure that exists.
+    # but may cause problems receiving mail from google & others who load-balance?
+    # - <https://unix.stackexchange.com/questions/592131/how-to-reject-email-from-unknown-domains-with-postfix-on-centos>
+    # smtpd_sender_restrictions = reject_unknown_sender_domain
+  };
 
   services.postfix.enableSubmission = true;
   services.postfix.submissionOptions = submissionOptions;
   services.postfix.enableSubmissions = true;
   services.postfix.submissionsOptions = submissionOptions;
 
-  systemd.services.postfix.after = [ "wireguard-wg0.service" ];
-  systemd.services.postfix.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.postfix.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.postfix.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.postfix.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
   };
 
 
+  #### OPENDKIM
+
   services.opendkim.enable = true;
   # services.opendkim.domains = "csl:uninsane.org";
   services.opendkim.domains = "uninsane.org";
@@ -132,8 +152,8 @@ in
   # keeping this the same as the hostname seems simplest
   services.opendkim.selector = "mx";
 
-  systemd.services.opendkim.after = [ "wireguard-wg0.service" ];
-  systemd.services.opendkim.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.opendkim.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.opendkim.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.opendkim.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -141,40 +161,6 @@ in
     UMask = lib.mkForce "0011";
   };
 
-  # inspired by https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/
-  services.dovecot2.enable = true;
-  services.dovecot2.sslServerCert = "/var/lib/acme/imap.uninsane.org/fullchain.pem";
-  services.dovecot2.sslServerKey = "/var/lib/acme/imap.uninsane.org/key.pem";
-  services.dovecot2.enablePAM = false;
-  services.dovecot2.extraConfig =
-  let
-    passwdFile = config.sops.secrets.dovecot_passwd.path;
-  in
-    ''
-    passdb {
-      driver = passwd-file
-      args = ${passwdFile}
-    }
-    userdb {
-      driver = passwd-file
-      args = ${passwdFile}
-    }
-
-    # allow postfix to query our auth db
-    service auth {
-      unix_listener auth {
-        mode = 0660
-        user = postfix
-        group = postfix
-      }
-    }
-    auth_mechanisms = plain login
-
-
-    mail_debug = yes
-    auth_debug = yes
-    # verbose_ssl = yes
-  '';
 
   #### OUTGOING MESSAGE REWRITING:
   services.postfix.enableHeaderChecks = true;
@@ -196,11 +182,4 @@ in
     #   pattern = "/^Subject:.*activate your account/";
     # }
   ];
-
-  sops.secrets.dovecot_passwd = {
-    sopsFile = ../../../secrets/servo.yaml;
-    owner = config.users.users.dovecot2.name;
-    # TODO: debug why mail can't be sent without this being world-readable
-    mode = "0444";
-  };
 }

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

@@ -9,19 +9,16 @@
 # $ sudo -u freshrss -g freshrss FRESHRSS_DATA_PATH=/var/lib/freshrss ./result/cli/export-opml-for-user.php --user admin
 # ```
 
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, sane-lib, ... }:
 {
-  sops.secrets.freshrss_passwd = {
-    sopsFile = ../../../secrets/servo.yaml;
+  sops.secrets."freshrss_passwd" = {
     owner = config.users.users.freshrss.name;
-    mode = "400";
+    mode = "0400";
   };
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "freshrss"; group = "freshrss"; directory = "/var/lib/freshrss"; }
   ];
 
-  users.users.freshrss.uid = config.sane.allocations.freshrss-uid;
-  users.groups.freshrss.gid = config.sane.allocations.freshrss-gid;
   services.freshrss.enable = true;
   services.freshrss.baseUrl = "https://rss.uninsane.org";
   services.freshrss.virtualHost = "rss.uninsane.org";
@@ -29,9 +26,11 @@
 
   systemd.services.freshrss-import-feeds =
   let
+    feeds = sane-lib.feeds;
     fresh = config.systemd.services.freshrss-config;
-    feeds = import ../../../modules/home-manager/feeds.nix { inherit lib; };
-    opml = pkgs.writeText "sane-freshrss.opml" (feeds.feedsToOpml feeds.all);
+    all-feeds = config.sane.feeds;
+    wanted-feeds = feeds.filterByFormat ["text" "image"] all-feeds;
+    opml = pkgs.writeText "sane-freshrss.opml" (feeds.feedsToOpml wanted-feeds);
   in {
     inherit (fresh) wantedBy environment;
     serviceConfig = {
@@ -42,7 +41,10 @@
     description = "import sane RSS feed list";
     after = [ "freshrss-config.service" ];
     script = ''
-      ${pkgs.freshrss}/cli/import-for-user.php --user admin --filename ${opml}
+      # easiest way to preserve feeds: delete the user, recreate it, import feeds
+      ${pkgs.freshrss}/cli/delete-user.php --user colin || true
+      ${pkgs.freshrss}/cli/create-user.php --user colin --password "$(cat ${config.services.freshrss.passwordFile})" || true
+      ${pkgs.freshrss}/cli/import-for-user.php --user colin --filename ${opml}
     '';
   };
 
@@ -57,5 +59,5 @@
     # the routing is handled by services.freshrss.virtualHost
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."rss" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."rss" = "native";
 }

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

@@ -1,25 +1,37 @@
+# config options: <https://docs.gitea.io/en-us/administration/config-cheat-sheet/>
 { config, pkgs, lib, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "git"; group = "gitea"; directory = "/var/lib/gitea"; }
   ];
-  users.groups.gitea.gid = config.sane.allocations.gitea-gid;
   services.gitea.enable = true;
   services.gitea.user = "git";  # default is 'gitea'
   services.gitea.database.type = "postgres";
   services.gitea.database.user = "git";
   services.gitea.appName = "Perfectly Sane Git";
-  services.gitea.domain = "git.uninsane.org";
-  services.gitea.rootUrl = "https://git.uninsane.org/";
-  services.gitea.settings.session.COOKIE_SECURE = true;
   # services.gitea.disableRegistration = true;
 
+  # gitea doesn't create the git user
+  users.users.git = {
+    description = "Gitea Service";
+    home = "/var/lib/gitea";
+    useDefaultShell = true;
+    group = "gitea";
+    isSystemUser = true;
+    # sendmail access (not 100% sure if this is necessary)
+    extraGroups = [ "postdrop" ];
+  };
+
   services.gitea.settings = {
+    # options: "Trace", "Debug", "Info", "Warn", "Error", "Critical"
+    log.LEVEL = "Warn";
     server = {
       # options: "home", "explore", "organizations", "login" or URL fragment (or full URL)
       LANDING_PAGE = "explore";
+      DOMAIN = "git.uninsane.org";
+      ROOT_URL = "https://git.uninsane.org/";
     };
     service = {
       # timeout for email approval. 5760 = 4 days
@@ -34,6 +46,7 @@
       ENABLE_CAPTCHA = true;
       NOREPLY_ADDRESS = "noreply.anonymous.git@uninsane.org";
     };
+    session.COOKIE_SECURE = true;
     repository = {
       DEFAULT_BRANCH = "master";
     };
@@ -48,6 +61,8 @@
     };
     #"ui.meta" = ... to customize html author/description/etc
     mailer = {
+      # alternative is to use nixos-level config:
+      # services.gitea.mailerPasswordFile = ...
       ENABLED = true;
       MAILER_TYPE = "sendmail";
       FROM = "notify.git@uninsane.org";
@@ -59,8 +74,6 @@
       FORMAT = "RFC3339";
     };
   };
-  # options: "Trace", "Debug", "Info", "Warn", "Error", "Critical"
-  services.gitea.settings.log.LEVEL = "Warn";
 
   systemd.services.gitea.serviceConfig = {
     # nix default is AF_UNIX AF_INET AF_INET6.
@@ -85,5 +98,5 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."git" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."git" = "native";
 }

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

@@ -64,5 +64,5 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."sink" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."sink" = "native";
 }

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

@@ -10,7 +10,7 @@
 
 lib.mkIf false # i don't actively use ipfs anymore
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "261"; group = "261"; directory = "/var/lib/ipfs"; }
   ];
@@ -34,7 +34,7 @@ lib.mkIf false # i don't actively use ipfs anymore
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."ipfs" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."ipfs" = "native";
 
   # services.ipfs.enable = true;
   services.kubo.localDiscovery = true;

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

@@ -1,14 +1,14 @@
 { ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? we only need this to save Indexer creds ==> migrate to config?
     { user = "root"; group = "root"; directory = "/var/lib/jackett"; }
   ];
   services.jackett.enable = true;
 
-  systemd.services.jackett.after = [ "wireguard-wg0.service" ];
-  systemd.services.jackett.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.jackett.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.jackett.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.jackett.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -27,6 +27,6 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jackett" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jackett" = "native";
 }
 

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

@@ -0,0 +1,115 @@
+# configuration options (today i don't store my config in nix):
+#
+# - jellyfin-web can be statically configured (result/share/jellyfin-web/config.json)
+#   - <https://jellyfin.org/docs/general/clients/web-config>
+#   - configure server list, plugins, "menuLinks", colors
+#
+# - jellfyin server is configured in /var/lib/jellfin/
+#   - root/default/<LibraryType>/
+#     - <LibraryName>.mblink: contains the directory name where this library lives
+#     - options.xml: contains preferences which were defined in the web UI during import
+#       - e.g. `EnablePhotos`, `EnableChapterImageExtraction`, etc.
+#   - config/encoding.xml: transcoder settings
+#   - config/system.xml: misc preferences like log file duration, audiobook resume settings, etc.
+#   - data/jellyfin.db: maybe account definitions? internal state?
+
+{ config, lib, ... }:
+
+{
+  # identical to:
+  # services.jellyfin.openFirewall = true;
+  # N.B.: these are all for the LAN, so we don't go through `sane.services.wan-ports`.
+  networking.firewall.allowedUDPPorts = [
+    # https://jellyfin.org/docs/general/networking/index.html
+    1900  # UPnP service discovery
+    7359  # Jellyfin-specific (?) client discovery
+  ];
+  networking.firewall.allowedTCPPorts = [
+    8096  # HTTP (for the LAN)
+    8920  # HTTPS (for the LAN)
+  ];
+  sane.persist.sys.plaintext = [
+    { user = "jellyfin"; group = "jellyfin"; mode = "0700"; directory = "/var/lib/jellyfin"; }
+  ];
+  sane.fs."/var/lib/jellyfin/config/logging.json" = {
+    # "Emby.Dlna" logging: <https://jellyfin.org/docs/general/networking/dlna>
+    symlink.text = ''
+      {
+        "Serilog": {
+          "MinimumLevel": {
+            "Default": "Information",
+            "Override": {
+              "Microsoft": "Warning",
+              "System": "Warning",
+              "Emby.Dlna": "Debug",
+              "Emby.Dlna.Eventing": "Debug"
+            }
+          },
+          "WriteTo": [
+            {
+              "Name": "Console",
+              "Args": {
+                "outputTemplate": "[{Timestamp:HH:mm:ss}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message:lj}{NewLine}{Exception}"
+              }
+            }
+          ],
+          "Enrich": [ "FromLogContext", "WithThreadId" ]
+        }
+      }
+    '';
+    wantedBeforeBy = [ "jellyfin.service" ];
+  };
+
+  # Jellyfin multimedia server
+  # this is mostly taken from the official jellfin.org docs
+  services.nginx.virtualHosts."jelly.uninsane.org" = {
+    addSSL = true;
+    enableACME = true;
+    # inherit kTLS;
+
+    locations."/" = {
+      proxyPass = "http://127.0.0.1:8096";
+      extraConfig = ''
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Protocol $scheme;
+        proxy_set_header X-Forwarded-Host $http_host;
+
+        # Disable buffering when the nginx proxy gets very resource heavy upon streaming
+        proxy_buffering off;
+      '';
+    };
+    # locations."/web/" = {
+    #   proxyPass = "http://127.0.0.1:8096/web/index.html";
+    #   extraConfig = ''
+    #     proxy_set_header Host $host;
+    #     proxy_set_header X-Real-IP $remote_addr;
+    #     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    #     proxy_set_header X-Forwarded-Proto $scheme;
+    #     proxy_set_header X-Forwarded-Protocol $scheme;
+    #     proxy_set_header X-Forwarded-Host $http_host;
+    #   '';
+    # };
+    locations."/socket" = {
+      proxyPass = "http://127.0.0.1:8096";
+      extraConfig = ''
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Protocol $scheme;
+        proxy_set_header X-Forwarded-Host $http_host;
+      '';
+    };
+  };
+
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jelly" = "native";
+
+  services.jellyfin.enable = true;
+}

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

@@ -13,5 +13,5 @@
     locations."/".proxyPass = "http://127.0.0.1:8013";
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."w" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."w" = "native";
 }

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

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

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

@@ -0,0 +1,58 @@
+# docs:
+# - <repo:LemmyNet/lemmy:docker/federation/nginx.conf>
+# - <repo:LemmyNet/lemmy:docker/nginx.conf>
+# - <repo:LemmyNet/lemmy-ansible:templates/nginx.conf>
+
+{ config, lib, ... }:
+let
+  inherit (builtins) toString;
+  inherit (lib) mkForce;
+  uiPort = 1234;  # default ui port is 1234
+  backendPort = 8536; # default backend port is 8536
+  # - i guess the "backend" port is used for federation?
+in {
+  services.lemmy = {
+    enable = true;
+    settings.hostname = "lemmy.uninsane.org";
+    settings.federation.enabled = true;
+    # federation.debug forces outbound federation queries to be run synchronously
+    # settings.federation.debug = true;
+    settings.port = backendPort;
+    ui.port = uiPort;
+    database.createLocally = true;
+    nginx.enable = true;
+  };
+
+  systemd.services.lemmy.serviceConfig = {
+    # fix to use a normal user so we can configure perms correctly
+    DynamicUser = mkForce false;
+    User = "lemmy";
+    Group = "lemmy";
+  };
+  systemd.services.lemmy.environment = {
+    RUST_BACKTRACE = "full";
+    # RUST_LOG = "debug";
+    # upstream defaults LEMMY_DATABASE_URL = "postgres:///lemmy?host=/run/postgresql";
+    # - Postgres complains that we didn't specify a user
+    # lemmy formats the url as:
+    # - postgres://{user}:{password}@{host}:{port}/{database}
+    # SO suggests (https://stackoverflow.com/questions/3582552/what-is-the-format-for-the-postgresql-connection-string-url):
+    # - postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&...]
+    # LEMMY_DATABASE_URL = "postgres://lemmy@/run/postgresql";  # connection to server on socket "/run/postgresql/.s.PGSQL.5432" failed: FATAL:  database "run/postgresql" does not exist
+    # LEMMY_DATABASE_URL = "postgres://lemmy?host=/run/postgresql";  # no PostgreSQL user name specified in startup packet
+    # LEMMY_DATABASE_URL = mkForce "postgres://lemmy@?host=/run/postgresql";  # WORKS
+    LEMMY_DATABASE_URL = mkForce "postgres://lemmy@/lemmy?host=/run/postgresql";
+  };
+  users.groups.lemmy = {};
+  users.users.lemmy = {
+    group = "lemmy";
+    isSystemUser = true;
+  };
+
+  services.nginx.virtualHosts."lemmy.uninsane.org" = {
+    forceSSL = true;
+    enableACME = true;
+  };
+
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."lemmy" = "native";
+}

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

@@ -1,17 +1,21 @@
-# docs: https://nixos.wiki/wiki/Matrix
-# docs: https://nixos.org/manual/nixos/stable/index.html#module-services-matrix-synapse
+# docs: <https://nixos.wiki/wiki/Matrix>
+# docs: <https://nixos.org/manual/nixos/stable/index.html#module-services-matrix-synapse>
+# example config: <https://github.com/matrix-org/synapse/blob/develop/docs/sample_config.yaml>
 { config, lib, pkgs, ... }:
 
 {
   imports = [
     ./discord-puppet.nix
-    # ./irc.nix
+    ./irc.nix
+    ./signal.nix
   ];
 
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "matrix-synapse"; group = "matrix-synapse"; directory = "/var/lib/matrix-synapse"; }
   ];
   services.matrix-synapse.enable = true;
+  # this changes the default log level from INFO to WARN.
+  # maybe there's an easier way?
   services.matrix-synapse.settings.log_config = ./synapse-log_level.yaml;
   services.matrix-synapse.settings.server_name = "uninsane.org";
 
@@ -38,11 +42,14 @@
     }
   ];
 
+  services.matrix-synapse.settings.x_forwarded = true;  # because we proxy matrix behind nginx
+  services.matrix-synapse.settings.max_upload_size = "100M";  # default is "50M"
+
   services.matrix-synapse.settings.admin_contact = "admin.matrix@uninsane.org";
   services.matrix-synapse.settings.registrations_require_3pid = [ "email" ];
 
   services.matrix-synapse.extraConfigFiles = [
-    config.sops.secrets.matrix_synapse_secrets.path
+    config.sops.secrets."matrix_synapse_secrets.yaml".path
   ];
 
   # services.matrix-synapse.extraConfigFiles = [builtins.toFile "matrix-synapse-extra-config" ''
@@ -91,6 +98,10 @@
 
     locations."/" = {
       proxyPass = "http://127.0.0.1:8008";
+      extraConfig = ''
+        # allow uploading large files (matrix enforces a separate limit, downstream)
+        client_max_body_size  512m;
+      '';
     };
     # redirect browsers to the web client.
     # i don't think native matrix clients ever fetch the root.
@@ -122,13 +133,12 @@
   };
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    CNAME."matrix" = [ "native" ];
-    CNAME."web.matrix" = [ "native" ];
+    CNAME."matrix" = "native";
+    CNAME."web.matrix" = "native";
   };
 
 
-  sops.secrets.matrix_synapse_secrets = {
-    sopsFile = ../../../../secrets/servo.yaml;
+  sops.secrets."matrix_synapse_secrets.yaml" = {
     owner = config.users.users.matrix-synapse.name;
   };
 }

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

@@ -1,6 +1,11 @@
 { lib, ... }:
+
+# XXX mx-discord-puppet uses nodejs_14 which is EOL
+# - mx-discord-puppet is abandoned upstream _and_ in nixpkgs
+# - recommended to use mautrix-discord: <https://github.com/NixOS/nixpkgs/pull/200462>
+lib.mkIf false
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "matrix-synapse"; group = "matrix-synapse"; directory = "/var/lib/mx-puppet-discord"; }
   ];
 
@@ -43,6 +48,7 @@
     };
   };
 
+  # TODO: should use a dedicated user
   systemd.services.mx-puppet-discord.serviceConfig = {
     # fix up to not use /var/lib/private, but just /var/lib
     DynamicUser = lib.mkForce false;

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

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

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

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

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

@@ -0,0 +1,156 @@
+# config docs:
+# - <https://github.com/matrix-org/matrix-appservice-irc/blob/develop/config.sample.yaml>
+# TODO: /quit message for bridged users reveals to IRC users that i'm using a bridge;
+#       probably want to remove that.
+{ config, lib, ... }:
+
+let
+  ircServer = { name, additionalAddresses ? [], sasl ? true }: let
+    lowerName = lib.toLower name;
+  in {
+    # XXX sasl: appservice doesn't support NickServ identification (only SASL, or PASS if sasl = false)
+    inherit name additionalAddresses sasl;
+    port = 6697;
+    ssl = true;
+    botConfig = {
+      # bot has no presence in IRC channel; only real Matrix users
+      enabled = false;
+      # this is the IRC username/nickname *of the bot* (not visible in channels): not of the end-user.
+      # the irc username/nick of a mapped Matrix user is determined further down in `ircClients` section.
+      # if `enabled` is false, then this name probably never shows up on the IRC side (?)
+      nick = "uninsane";
+      username = "uninsane";
+      joinChannelsIfNoUsers = false;
+    };
+    dynamicChannels = {
+      enabled = true;
+      aliasTemplate = "#irc_${lowerName}_$CHANNEL";
+      published = false;  # false => irc rooms aren't listed in homeserver public rooms list
+      federate = false;  # false => Matrix users from other homeservers can't join IRC channels
+    };
+    ircClients = {
+      nickTemplate = "$LOCALPARTsane";  # @colin:uninsane.org (Matrix) -> colinsane (IRC)
+      realnameFormat = "reverse-mxid";  # @colin:uninsane.org (Matrix) -> org.uninsane:colin (IRC)
+      # realnameFormat = "localpart";  # @colin:uninsane.org (Matrix) -> colin (IRC)  -- but requires the mxid patch below
+      # by default, Matrix will convert messages greater than (3) lines into a pastebin-like URL to send to IRC.
+      lineLimit = 20;
+      # Rizon in particular allows only 4 connections from one IP before a 30min ban.
+      # that's effectively reduced to 2 during a netsplit, or maybe during a restart.
+      #   - https://wiki.rizon.net/index.php?title=Connection/Session_Limit_Exemptions
+      # especially, misconfigurations elsewhere in this config may cause hundreds of connections
+      # so this is a safeguard.
+      maxClients = 2;
+      # don't have the bridge disconnect me from IRC when idle.
+      idleTimeout = 0;
+      concurrentReconnectLimit = 2;
+      reconnectIntervalMs = 60000;
+      kickOn = {
+        # remove Matrix user from room when...
+        channelJoinFailure = false;
+        ircConnectionFailure = false;
+        userQuit = true;
+      };
+    };
+    matrixClients = {
+      userTemplate = "@irc_${lowerName}_$NICK";  # the :uninsane.org part is appended automatically
+    };
+
+    # this will let this user message the appservice with `!join #<IRCChannel>` and the rest "Just Works"
+    "@colin:uninsane.org" = "admin";
+
+    membershipLists = {
+      enabled = true;
+      global = {
+        ircToMatrix = {
+          initial = true;
+          incremental = true;
+          requireMatrixJoined = false;
+        };
+        matrixToIrc = {
+          initial = true;
+          incremental = true;
+        };
+      };
+      ignoreIdleUsersOnStartup = {
+        enabled = false;  # false => always bridge users, even if idle
+      };
+    };
+    # sync room description?
+    bridgeInfoState = {
+      enabled = true;
+      initial = true;
+    };
+
+    # for per-user IRC password:
+    # - invite @irc_${lowerName}_NickServ:uninsane.org to a DM and type `help`  => register
+    # - invite the matrix-appservice-irc user to a DM and type `!help`   => add PW to database
+    # to validate that i'm authenticated on the IRC network, DM @irc_${lowerName}_NickServ:uninsane.org:
+    # - send: `STATUS colinsane`
+    # - response should be `3`: "user recognized as owner via password identification"
+    # passwordEncryptionKeyPath = "/path/to/privkey";  # appservice will generate its own if unspecified
+  };
+in
+{
+
+  nixpkgs.overlays = [
+    (next: prev: {
+      matrix-appservice-irc = prev.matrix-appservice-irc.overrideAttrs (super: {
+        patches = super.patches or [] ++ [
+          ./irc-no-reveal-bridge.patch
+          # ./irc-no-reveal-mxid.patch
+        ];
+      });
+    })
+  ];
+
+  sane.persist.sys.plaintext = [
+    # TODO: mode?
+    { user = "matrix-appservice-irc"; group = "matrix-appservice-irc"; directory = "/var/lib/matrix-appservice-irc"; }
+  ];
+
+  services.matrix-synapse.settings.app_service_config_files = [
+    "/var/lib/matrix-appservice-irc/registration.yml"  # auto-created by irc appservice
+  ];
+
+  services.matrix-appservice-irc.enable = true;
+  services.matrix-appservice-irc.registrationUrl = "http://127.0.0.1:8009";
+  services.matrix-appservice-irc.settings = {
+    homeserver = {
+      url = "http://127.0.0.1:8008";
+      dropMatrixMessagesAfterSecs = 300;
+      domain = "uninsane.org";
+      enablePresence = true;
+      bindPort = 9999;
+      bindHost = "127.0.0.1";
+    };
+
+    ircService = {
+      servers = {
+        "irc.esper.net" = ircServer {
+          name = "esper";
+          sasl = false;
+          # notable channels:
+          # - #merveilles
+        };
+        "irc.libera.chat" = ircServer {
+          name = "libera";
+          sasl = false;
+          # notable channels:
+          # - #hare
+        };
+        "irc.myanonamouse.net" = ircServer {
+          name = "MyAnonamouse";
+          additionalAddresses = [ "irc2.myanonamouse.net" ];
+          sasl = false;
+        };
+        "irc.oftc.net" = ircServer {
+          name = "oftc";
+          # notable channels:
+          # - #sxmo
+          # - #sxmo-offtopic
+        };
+        "irc.rizon.net" = ircServer { name = "Rizon"; };
+      };
+    };
+  };
+}

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

@@ -0,0 +1,37 @@
+# config options:
+# - <https://github.com/mautrix/signal/blob/master/mautrix_signal/example-config.yaml>
+{ config, pkgs, ... }:
+{
+  sane.persist.sys.plaintext = [
+    { user = "mautrix-signal"; group = "mautrix-signal"; directory = "/var/lib/mautrix-signal"; }
+    { user = "signald"; group = "signald"; directory = "/var/lib/signald"; }
+  ];
+
+  # allow synapse to read the registration file
+  users.users.matrix-synapse.extraGroups = [ "mautrix-signal" ];
+
+  services.signald.enable = true;
+  services.mautrix-signal.enable = true;
+  services.mautrix-signal.environmentFile =
+    config.sops.secrets.mautrix_signal_env.path;
+
+  services.mautrix-signal.settings.signal.socket_path = "/run/signald/signald.sock";
+  services.mautrix-signal.settings.homeserver.domain = "uninsane.org";
+  services.mautrix-signal.settings.bridge.permissions."@colin:uninsane.org" = "admin";
+  services.matrix-synapse.settings.app_service_config_files = [
+    # auto-created by mautrix-signal service
+    "/var/lib/mautrix-signal/signal-registration.yaml"
+  ];
+
+  systemd.services.mautrix-signal.serviceConfig = {
+    # allow communication to signald
+    SupplementaryGroups = [ "signald" ];
+    ReadWritePaths = [ "/run/signald" ];
+  };
+
+  sops.secrets."mautrix_signal_env" = {
+    mode = "0440";
+    owner = config.users.users.mautrix-signal.name;
+    group = config.users.users.matrix-synapse.name;
+  };
+}

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

@@ -1,8 +1,8 @@
-{ ... }:
+{ lib, ... }:
 
 {
-  sane.impermanence.dirs = [
-    { user = "navidrome"; group = "navidrome"; directory = "/var/lib/private/navidrome"; }
+  sane.persist.sys.plaintext = [
+    { user = "navidrome"; group = "navidrome"; directory = "/var/lib/navidrome"; }
   ];
   services.navidrome.enable = true;
   services.navidrome.settings = {
@@ -15,6 +15,20 @@
     ScanSchedule = "@every 1h";
   };
 
+  systemd.services.navidrome.serviceConfig = {
+    # fix to use a normal user so we can configure perms correctly
+    DynamicUser = lib.mkForce false;
+    User = "navidrome";
+    Group = "navidrome";
+  };
+
+  users.groups.navidrome = {};
+
+  users.users.navidrome = {
+    group = "navidrome";
+    isSystemUser = true;
+  };
+
   services.nginx.virtualHosts."music.uninsane.org" = {
     forceSSL = true;
     enableACME = true;
@@ -22,5 +36,5 @@
     locations."/".proxyPass = "http://127.0.0.1:4533";
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."music" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."music" = "native";
 }

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

@@ -1,9 +1,9 @@
 # docs: https://nixos.wiki/wiki/Nginx
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 let
   # make the logs for this host "public" so that they show up in e.g. metrics
-  publog = vhost: vhost // {
+  publog = vhost: lib.attrsets.unionOfDisjoint vhost {
     extraConfig = (vhost.extraConfig or "") + ''
       access_log /var/log/nginx/public.log vcombined;
     '';
@@ -13,7 +13,7 @@ let
 in
 {
 
-  networking.firewall.allowedTCPPorts = [ 80 443 ];
+  sane.services.wan-ports.tcp = [ 80 443 ];
 
   services.nginx.enable = true;
   services.nginx.appendConfig = ''
@@ -120,9 +120,7 @@ in
   security.acme.acceptTerms = true;
   security.acme.defaults.email = "admin.acme@uninsane.org";
 
-  users.users.acme.uid = config.sane.allocations.acme-uid;
-  users.groups.acme.gid = config.sane.allocations.acme-gid;
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode?
     { user = "acme"; group = "acme"; directory = "/var/lib/acme"; }
     { user = "colin"; group = "users"; directory = "/var/www/sites"; }

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

@@ -14,8 +14,8 @@
     '';
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."nixcache" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."nixcache" = "native";
 
   sane.services.nixserve.enable = true;
-  sane.services.nixserve.sopsFile = ../../../secrets/servo.yaml;
+  sane.services.nixserve.secretKeyFile = config.sops.secrets.nix_serve_privkey.path;
 }

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

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

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

@@ -6,12 +6,10 @@
 { config, pkgs, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "pleroma"; group = "pleroma"; directory = "/var/lib/pleroma"; }
   ];
-  users.users.pleroma.uid = config.sane.allocations.pleroma-uid;
-  users.groups.pleroma.gid = config.sane.allocations.pleroma-gid;
   services.pleroma.enable = true;
   services.pleroma.secretConfigFile = config.sops.secrets.pleroma_secrets.path;
   services.pleroma.configs = [
@@ -113,7 +111,7 @@
     ''
   ];
 
-  systemd.services.pleroma.path = [ 
+  systemd.services.pleroma.path = [
     # something inside pleroma invokes `sh` w/o specifying it by path, so this is needed to allow pleroma to start
     pkgs.bash
     # used by Pleroma to strip geo tags from uploads
@@ -137,6 +135,11 @@
   #   CapabilityBoundingSet = lib.mkForce "~";
   # };
 
+  # this is required to allow pleroma to send email.
+  # raw `sendmail` works, but i think pleroma's passing it some funny flags or something, idk.
+  # hack to fix that.
+  users.users.pleroma.extraGroups = [ "postdrop" ];
+
   # Pleroma server and web interface
   # TODO: enable publog?
   services.nginx.virtualHosts."fed.uninsane.org" = {
@@ -179,10 +182,9 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."fed" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."fed" = "native";
 
-  sops.secrets.pleroma_secrets = {
-    sopsFile = ../../../secrets/servo.yaml;
+  sops.secrets."pleroma_secrets" = {
     owner = config.users.users.pleroma.name;
   };
 }

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

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode?
     { user = "postgres"; group = "postgres"; directory = "/var/lib/postgresql"; }
   ];

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

@@ -9,10 +9,10 @@
 # nixnet runs ejabberd, so revisiting that.
 lib.mkIf false
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "prosody"; group = "prosody"; directory = "/var/lib/prosody"; }
   ];
-  networking.firewall.allowedTCPPorts = [
+  sane.services.wan-ports.tcp = [
     5222  # XMPP client -> server
     5269  # XMPP server -> server
     5280  # bosh

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

@@ -1,7 +1,7 @@
 { pkgs, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? we need this specifically for the stats tracking in .config/
     { user = "transmission"; group = "transmission"; directory = "/var/lib/transmission"; }
   ];
@@ -27,7 +27,7 @@
     # units in kBps
     speed-limit-down = 3000;
     speed-limit-down-enabled = true;
-    speed-limit-up = 300;
+    speed-limit-up = 600;
     speed-limit-up-enabled = true;
 
     # see: https://git.zknt.org/mirror/transmission/commit/cfce6e2e3a9b9d31a9dafedd0bdc8bf2cdb6e876?lang=bg-BG
@@ -40,8 +40,8 @@
   # transmission will by default not allow the world to read its files.
   services.transmission.downloadDirPermissions = "775";
 
-  systemd.services.transmission.after = [ "wireguard-wg0.service" ];
-  systemd.services.transmission.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.transmission.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.transmission.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.transmission.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -75,6 +75,6 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."bt" = ["native"];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."bt" = "native";
 }
 

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

@@ -6,9 +6,10 @@
   sane.services.trust-dns.listenAddrsIPv4 = [
     # specify each address explicitly, instead of using "*".
     # this ensures responses are sent from the address at which the request was received.
-    "192.168.0.5"
+    config.sane.hosts.by-name."servo".lan-ip
     "10.0.1.5"
   ];
+  sane.services.trust-dns.quiet = true;
 
   sane.services.trust-dns.zones."uninsane.org".TTL = 900;
 
@@ -21,25 +22,25 @@
   # Retry = how long secondary NS should wait until re-querying master after a failure (must be < Refresh)
   # Expire = how long secondary NS should continue to reply to queries after master fails (> Refresh + Retry)
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    SOA."@" = [''
+    SOA."@" = ''
       ns1.uninsane.org. admin-dns.uninsane.org. (
                                       2022122101 ; Serial
                                       4h         ; Refresh
                                       30m        ; Retry
                                       7d         ; Expire
                                       5m)        ; Negative response TTL
-    ''];
-    TXT."rev" = [ "2022122101" ];
+    '';
+    TXT."rev" = "2022122101";
 
     # XXX NS records must also not be CNAME
     # it's best that we keep this identical, or a superset of, what org. lists as our NS.
     # so, org. can specify ns2/ns3 as being to the VPN, with no mention of ns1. we provide ns1 here.
-    A."ns1" = [ "%NATIVE%" ];
-    A."ns2" = [ "185.157.162.178" ];
-    A."ns3" = [ "185.157.162.178" ];
-    A."ovpns" = [ "185.157.162.178" ];
-    A."native" = [ "%NATIVE%" ];
-    A."@" = [ "%NATIVE%" ];
+    A."ns1" =    "%NATIVE%";
+    A."ns2" =    "185.157.162.178";
+    A."ns3" =    "185.157.162.178";
+    A."ovpns" =  "185.157.162.178";
+    A."native" = "%NATIVE%";
+    A."@" =      "%NATIVE%";
     NS."@" = [
       "ns1.uninsane.org."
       "ns2.uninsane.org."

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

@@ -8,11 +8,8 @@ lib.mkIf false
 {
   sops.secrets."mediawiki_pw" = {
     owner = config.users.users.mediawiki.name;
-    sopsFile = ../../../secrets/servo.yaml;
   };
 
-  users.users.mediawiki.uid = config.sane.allocations.mediawiki-uid;
-
   services.mediawiki.enable = true;
   services.mediawiki.name = "Uninsane Wiki";
   services.mediawiki.passwordFile = config.sops.secrets.mediawiki_pw.path;

hosts/common/bluetooth.nix

@@ -1,18 +0,0 @@
-{ lib, pkgs, ... }:
-
-{
-  # TODO: don't need to depend on binsh if we were to use a nix-style shebang
-  system.activationScripts.linkBluetoothKeys = let
-    unwrapped = ../../scripts/install-bluetooth;
-    install-bluetooth = pkgs.writeShellApplication {
-      name = "install-bluetooth";
-      runtimeInputs = with pkgs; [ coreutils gnused ];
-      text = ''${unwrapped} "$@"'';
-    };
-  in (lib.stringAfter
-    [ "setupSecrets" "binsh" ]
-    ''
-    ${install-bluetooth}/bin/install-bluetooth /run/secrets/bt
-    ''
-  );
-}

hosts/common/default.nix

@@ -1,56 +1,77 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 {
   imports = [
-    ./bluetooth.nix
+    ./feeds.nix
     ./fs.nix
-    ./hardware
-    ./i2p.nix
+    ./hardware.nix
+    ./home
+    ./ids.nix
     ./machine-id.nix
     ./net.nix
+    ./persist.nix
+    ./programs
     ./secrets.nix
     ./ssh.nix
     ./users.nix
     ./vpn.nix
   ];
 
-  sane.home-manager.enable = true;
   sane.nixcache.enable-trusted-keys = true;
-  sane.packages.enableConsolePkgs = true;
-  sane.packages.enableSystemPkgs = true;
+  sane.nixcache.enable = lib.mkDefault true;
+  sane.persist.enable = lib.mkDefault true;
+  sane.programs.sysadminUtils.enableFor.system = lib.mkDefault true;
+  sane.programs.consoleUtils.enableFor.user.colin = lib.mkDefault true;
 
-  sane.impermanence.dirs = [
-    "/var/log"
-    "/var/backup"  # for e.g. postgres dumps
-    # TODO: move elsewhere
-    "/var/lib/alsa"                # preserve output levels, default devices
-    "/var/lib/bluetooth"           # preserve bluetooth handshakes
-    "/var/lib/colord"              # preserve color calibrations (?)
-    "/var/lib/machines"            # maybe not needed, but would be painful to add a VM and forget.
-  ];
+  # some services which use private directories error if the parent (/var/lib/private) isn't 700.
+  sane.fs."/var/lib/private".dir.acl.mode = "0700";
 
   nixpkgs.config.allowUnfree = true;
+  nixpkgs.config.allowBroken = true;  # NIXPKGS_ALLOW_BROKEN
 
   # time.timeZone = "America/Los_Angeles";
   time.timeZone = "Etc/UTC";  # DST is too confusing for me => use a stable timezone
 
   # allow `nix flake ...` command
+  # TODO: is this still required?
   nix.extraOptions = ''
     experimental-features = nix-command flakes
   '';
+  # allow `nix-shell` (and probably nix-index?) to locate our patched and custom packages
+  nix.nixPath = [
+    "nixpkgs=${pkgs.path}"
+    "nixpkgs-overlays=${../..}/overlays"
+  ];
+  # hardlinks identical files in the nix store to save 25-35% disk space.
+  # unclear _when_ this occurs. it's not a service.
+  # does the daemon continually scan the nix store?
+  # does the builder use some content-addressed db to efficiently dedupe?
+  nix.settings.auto-optimise-store = true;
 
-  # TODO: move this into home-manager?
   fonts = {
     enableDefaultFonts = true;
-    fonts = with pkgs; [ font-awesome twitter-color-emoji hack-font ];
+    fonts = with pkgs; [ font-awesome noto-fonts-emoji hack-font ];
     fontconfig.enable = true;
     fontconfig.defaultFonts = {
-      emoji = [ "Font Awesome 6 Free" "Twitter Color Emoji" ];
+      emoji = [ "Font Awesome 6 Free" "Noto Color Emoji" ];
       monospace = [ "Hack" ];
       serif = [ "DejaVu Serif" ];
       sansSerif = [ "DejaVu Sans" ];
     };
   };
 
+  # XXX: twitter-color-emoji doesn't cross-compile; but not-fonts-emoji does
+  # fonts = {
+  #   enableDefaultFonts = true;
+  #   fonts = with pkgs; [ font-awesome twitter-color-emoji hack-font ];
+  #   fontconfig.enable = true;
+  #   fontconfig.defaultFonts = {
+  #     emoji = [ "Font Awesome 6 Free" "Twitter Color Emoji" ];
+  #     monospace = [ "Hack" ];
+  #     serif = [ "DejaVu Serif" ];
+  #     sansSerif = [ "DejaVu Sans" ];
+  #   };
+  # };
+
   # disable non-required packages like nano, perl, rsync, strace
   environment.defaultPackages = [];
 
@@ -66,8 +87,20 @@
     # NIXOS_OZONE_WL = "1";
     # LIBGL_ALWAYS_SOFTWARE = "1";
   };
-  # enable zsh completions
-  environment.pathsToLink = [ "/share/zsh" ];
+
+  # dconf docs: <https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/desktop_migration_and_administration_guide/profiles>
+  # find keys/values with `dconf dump /`
+  programs.dconf.enable = true;
+  programs.dconf.packages = [
+    (pkgs.writeTextFile {
+      name = "dconf-user-profile";
+      destination = "/etc/dconf/profile/user";
+      text = ''
+        user-db:user
+        system-db:site
+      '';
+    })
+  ];
 
   # link debug symbols into /run/current-system/sw/lib/debug
   # hopefully picked up by gdb automatically?

hosts/common/feeds.nix

@@ -0,0 +1,246 @@
+# candidates:
+# - The Nonlinear Library (podcast): <https://forum.effectivealtruism.org/posts/JTZTBienqWEAjGDRv/listen-to-more-ea-content-with-the-nonlinear-library>
+#   - has ~10 posts per day, text-to-speech; i would need better tagging before adding this
+# - <https://www.metaculus.com/questions/11102/introducing-the-metaculus-journal-podcast/>
+#   - dead since 2022/10 - 2023/03
+
+{ lib, sane-data, ... }:
+let
+  hourly = { freq = "hourly"; };
+  daily = { freq = "daily"; };
+  weekly = { freq = "weekly"; };
+  infrequent = { freq = "infrequent"; };
+
+  art = { cat = "art"; };
+  humor = { cat = "humor"; };
+  pol = { cat = "pol"; };  # or maybe just "social"
+  rat = { cat = "rat"; };
+  tech = { cat = "tech"; };
+  uncat = { cat = "uncat"; };
+
+  text = { format = "text"; };
+  img = { format = "image"; };
+
+  mkRss = format: url: { inherit url format; } // uncat // infrequent;
+  # format-specific helpers
+  mkText = mkRss "text";
+  mkImg = mkRss "image";
+  mkPod = mkRss "podcast";
+
+  # host-specific helpers
+  mkSubstack = subdomain: { substack = subdomain; };
+
+  fromDb = name:
+    let
+      raw = sane-data.feeds."${name}";
+    in {
+      url = raw.url;
+      # not sure the exact mapping with velocity here: entries per day?
+      freq = lib.mkIf (raw.velocity or 0 != 0) (lib.mkDefault (
+        if raw.velocity > 2 then
+          "hourly"
+        else if raw.velocity > 0.5 then
+          "daily"
+        else if raw.velocity > 0.1 then
+          "weekly"
+        else
+          "infrequent"
+      ));
+    } // lib.optionalAttrs (raw.is_podcast or false) {
+      format = "podcast";
+    } // lib.optionalAttrs (raw.title or "" != "") {
+      title = lib.mkDefault raw.title;
+    };
+
+  podcasts = [
+    (fromDb "lexfridman.com/podcast" // rat)
+    ## Astral Codex Ten
+    (fromDb "sscpodcast.libsyn.com" // rat)
+    ## Less Wrong Curated
+    (fromDb "feeds.libsyn.com/421877" // rat)
+    ## Econ Talk
+    (fromDb "feeds.simplecast.com/wgl4xEgL" // rat)
+    ## Cory Doctorow -- both podcast & text entries
+    (fromDb "craphound.com" // pol)
+    ## Maggie Killjoy -- referenced by Cory Doctorow
+    (fromDb "omny.fm/shows/cool-people-who-did-cool-stuff" // pol)
+    (fromDb "congressionaldish.libsyn.com" // pol)
+    # (mkPod "https://podcasts.la.utexas.edu/this-is-democracy/feed/podcast/" // pol // weekly)
+    ## Civboot -- https://anchor.fm/civboot
+    (fromDb "anchor.fm/s/34c7232c/podcast/rss" // tech)
+    ## Emerge: making sense of what's next -- <https://www.whatisemerging.com/emergepodcast>
+    (mkPod "https://anchor.fm/s/21bc734/podcast/rss" // pol // infrequent)
+    (fromDb "feeds.feedburner.com/80000HoursPodcast" // rat)
+    ## Daniel Huberman on sleep
+    (fromDb "feeds.megaphone.fm/hubermanlab" // uncat)
+    ## Multidisciplinary Association for Psychedelic Studies
+    (fromDb "mapspodcast.libsyn.com" // uncat)
+    (fromDb "allinchamathjason.libsyn.com" // pol)
+    (fromDb "acquired.libsyn.com" // tech)
+    ## ACQ2 - more "Acquired" episodes
+    (fromDb "acquiredlpbonussecretsecret.libsyn.com" // tech)
+    # The Intercept - Deconstructed; also available: <rss.acast.com/deconstructed>
+    (fromDb "rss.prod.firstlook.media/deconstructed/podcast.rss" // pol)
+    ## The Daily
+    (mkPod "https://feeds.simplecast.com/54nAGcIl" // pol // daily)
+    # The Intercept - Intercepted; also available: <https://rss.acast.com/intercepted-with-jeremy-scahill>
+    (fromDb "rss.prod.firstlook.media/intercepted/podcast.rss" // pol)
+    (fromDb "podcast.posttv.com/itunes/post-reports.xml" // pol)
+    ## Eric Weinstein
+    (fromDb "rss.art19.com/the-portal" // rat)
+    (fromDb "darknetdiaries.com" // tech)
+    ## Radiolab -- also available here, but ONLY OVER HTTP: <http://feeds.wnyc.org/radiolab>
+    (fromDb "feeds.feedburner.com/radiolab" // pol)
+    ## Sam Harris
+    (fromDb "wakingup.libsyn.com" // pol)
+    ## 99% Invisible -- also available here: <https://feeds.simplecast.com/BqbsxVfO>
+    (fromDb "feeds.99percentinvisible.org/99percentinvisible" // pol)
+    (fromDb "rss.acast.com/ft-tech-tonic" // tech)
+    (fromDb "feeds.feedburner.com/dancarlin/history" // rat)
+    (fromDb "rss.art19.com/60-minutes" // pol)
+    ## The Verge - Decoder
+    (fromDb "feeds.megaphone.fm/recodedecode" // tech)
+    ## Matrix (chat) Live
+    (fromDb "feed.podbean.com/matrixlive/feed.xml" // tech)
+    ## Michael Malice - Your Welcome -- also available here: <https://origin.podcastone.com/podcast?categoryID2=2232>
+    (fromDb "rss.art19.com/your-welcome" // pol)
+    (fromDb "seattlenice.buzzsprout.com" // pol)
+    ## Sci-Fi? has Peter Watts; author of No Moods, Ads or Cutesy Fucking Icons (rifters.com)
+    (fromDb "talesfromthebridge.buzzsprout.com" // tech)
+    ## UnNamed Reverse Engineering Podcast
+    (fromDb "reverseengineering.libsyn.com/rss" // tech)
+    ## The Witch Trials of J.K. Rowling
+    ## - <https://www.thefp.com/witchtrials>
+    (mkPod "https://feeds.megaphone.fm/RUNMED9919162779" // pol // infrequent)
+  ];
+
+  texts = [
+    # AGGREGATORS (> 1 post/day)
+    (fromDb "lwn.net" // tech)
+    (fromDb "lesswrong.com" // rat)
+    # (fromDb "econlib.org" // pol)
+
+    # AGGREGATORS (< 1 post/day)
+    (fromDb "palladiummag.com" // uncat)
+    (fromDb "profectusmag.com" // uncat)
+    (fromDb "semiaccurate.com" // tech)
+    (mkText "https://linuxphoneapps.org/blog/atom.xml" // tech // infrequent)
+    (fromDb "tuxphones.com" // tech)
+    (fromDb "spectrum.ieee.org" // tech)
+    (fromDb "theregister.com" // tech)
+    (fromDb "thisweek.gnome.org" // tech)
+    # more nixos stuff here, but unclear how to subscribe: <https://nixos.org/blog/categories.html>
+    (mkText "https://nixos.org/blog/announcements-rss.xml" // tech // infrequent)
+    (mkText "https://nixos.org/blog/stories-rss.xml" // tech // weekly)
+    ## n.b.: quality RSS list here: <https://forum.merveilles.town/thread/57/share-your-rss-feeds%21-6/>
+    (mkText "https://forum.merveilles.town/rss.xml" // pol // infrequent)
+
+    ## No Moods, Ads or Cutesy Fucking Icons
+    (fromDb "rifters.com/crawl" // uncat)
+
+    # DEVELOPERS
+    (fromDb "blog.jmp.chat" // tech)
+    (fromDb "uninsane.org" // tech)
+    (fromDb "ascii.textfiles.com" // tech)  # Jason Scott
+    (fromDb "xn--gckvb8fzb.com" // tech)
+    (fromDb "mg.lol" // tech)
+    # (fromDb "drewdevault.com" // tech)
+    ## Ken Shirriff
+    (fromDb "righto.com" // tech)
+    ## shared blog by a few NixOS devs, notably onny
+    (fromDb "project-insanity.org" // tech)
+    ## Vitalik Buterin
+    (fromDb "vitalik.ca" // tech)
+    ## ian (Sanctuary)
+    (fromDb "sagacioussuricata.com" // tech)
+    ## Bunnie Juang
+    (fromDb "bunniestudios.com" // tech)
+    (fromDb "blog.danieljanus.pl" // tech)
+    (fromDb "ianthehenry.com" // tech)
+    (fromDb "bitbashing.io" // tech)
+    (fromDb "idiomdrottning.org" // uncat)
+    (mkText "https://anish.lakhwara.com/home.html" // tech // weekly)
+    (fromDb "jefftk.com" // tech)
+    (fromDb "pomeroyb.com" // tech)
+    (mkText "https://til.simonwillison.net/tils/feed.atom" // tech // weekly)
+
+    # TECH PROJECTS
+    (fromDb "blog.rust-lang.org" // tech)
+
+    # (TECH; POL) COMMENTATORS
+    ## Matt Webb -- engineering-ish, but dreamy
+    (fromDb "interconnected.org/home/feed" // rat)
+    (fromDb "edwardsnowden.substack.com" // pol // text)
+    ## Julia Evans
+    (mkText "https://jvns.ca/atom.xml" // tech // weekly)
+    (mkText "http://benjaminrosshoffman.com/feed" // pol // weekly)
+    ## Ben Thompson
+    (mkText "https://www.stratechery.com/rss" // pol // weekly)
+    ## Balaji
+    (fromDb "balajis.com" // pol)
+    (fromDb "ben-evans.com/benedictevans" // pol)
+    (fromDb "lynalden.com" // pol)
+    (fromDb "austinvernon.site" // tech)
+    (mkSubstack "oversharing" // pol // daily)
+    (mkSubstack "byrnehobart" // pol // infrequent)
+    # (mkSubstack "doomberg" // tech // weekly)  # articles are all pay-walled
+    ## David Rosenthal
+    (fromDb "blog.dshr.org" // pol)
+    ## Matt Levine
+    (mkText "https://www.bloomberg.com/opinion/authors/ARbTQlRLRjE/matthew-s-levine.rss" // pol // weekly)
+    (fromDb "stpeter.im/atom.xml" // pol)
+    ## Peter Saint-Andre -- side project of stpeter.im
+    (fromDb "philosopher.coach" // rat)
+    (fromDb "morningbrew.com/feed" // pol)
+
+    # RATIONALITY/PHILOSOPHY/ETC
+    (mkSubstack "samkriss" // humor // infrequent)
+    (fromDb "unintendedconsequenc.es" // rat)
+    (fromDb "applieddivinitystudies.com" // rat)
+    (fromDb "slimemoldtimemold.com" // rat)
+    (fromDb "richardcarrier.info" // rat)
+    (fromDb "gwern.net" // rat)
+    ## Jason Crawford
+    (fromDb "rootsofprogress.org" // rat)
+    ## Robin Hanson
+    (fromDb "overcomingbias.com" // rat)
+    ## Scott Alexander
+    (mkSubstack "astralcodexten" // rat // daily)
+    ## Paul Christiano
+    (fromDb "sideways-view.com" // rat)
+    ## Sean Carroll
+    (fromDb "preposterousuniverse.com" // rat)
+    (mkSubstack "eliqian" // rat // weekly)
+    (mkText "https://acoup.blog/feed" // rat // weekly)
+
+    ## mostly dating topics. not advice, or humor, but looking through a social lens
+    (fromDb "putanumonit.com" // rat)
+
+    # LOCAL
+    (fromDb "capitolhillseattle.com" // pol)
+
+    # CODE
+    # (mkText "https://github.com/Kaiteki-Fedi/Kaiteki/commits/master.atom" // tech // infrequent)
+  ];
+
+  images = [
+    (fromDb "smbc-comics.com" // img // humor)
+    (fromDb "xkcd.com" // img // humor)
+    (fromDb "pbfcomics.com" // img // humor)
+    # (mkImg "http://dilbert.com/feed" // humor // daily)
+    (fromDb "poorlydrawnlines.com/feed" // img // humor)
+
+    # ART
+    (fromDb "miniature-calendar.com" // img // art // daily)
+  ];
+in
+{
+  sane.feeds = texts ++ images ++ podcasts;
+
+  assertions = builtins.map
+    (p: {
+      assertion = p.format or "unknown" == "podcast";
+      message = ''${p.url} is not a podcast: ${p.format or "unknown"}'';
+    })
+    podcasts;
+}

hosts/common/hardware.nix

@@ -28,6 +28,11 @@
   # powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
   powerManagement.powertop.enable = false;
 
+  services.logind.extraConfig = ''
+    # don’t shutdown when power button is short-pressed
+    HandlePowerKey=ignore
+  '';
+
   # services.snapper.configs = {
   #   root = {
   #     subvolume = "/";

hosts/common/home/default.nix

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

hosts/common/home/keyring.nix

@@ -0,0 +1,11 @@
+{ config, sane-lib, ... }:
+
+{
+  sane.user.persist.private = [ ".local/share/keyrings" ];
+
+  sane.user.fs."private/.local/share/keyrings/default" = {
+    generated.script.script = builtins.readFile ../../../scripts/init-keyring;
+    # TODO: is this `wantedBy` needed? can we inherit it?
+    wantedBy = [ config.sane.fs."/home/colin/private".unit ];
+  };
+}

hosts/common/home/mime.nix

@@ -0,0 +1,43 @@
+{ config, sane-lib, ...}:
+
+let
+  www = config.sane.programs.web-browser.config.browser.desktop;
+  pdf = "org.gnome.Evince.desktop";
+  md = "obsidian.desktop";
+  thumb = "org.gnome.gThumb.desktop";
+  video = "vlc.desktop";
+  # audio = "mpv.desktop";
+  audio = "vlc.desktop";
+in
+{
+
+  # the xdg mime type for a file can be found with:
+  # - `xdg-mime query filetype path/to/thing.ext`
+  # we can have single associations or a list of associations.
+  # there's also options to *remove* [non-default] associations from specific apps
+  xdg.mime.enable = true;
+  xdg.mime.defaultApplications = {
+    # AUDIO
+    "audio/flac" = audio;
+    "audio/mpeg" = audio;
+    "audio/x-vorbis+ogg" = audio;
+    # IMAGES
+    "image/heif" = thumb;  # apple codec
+    "image/png" = thumb;
+    "image/jpeg" = thumb;
+    # VIDEO
+    "video/mp4" = video;
+    "video/quicktime" = video;
+    "video/webm" = video;
+    "video/x-matroska" = video;
+    # HTML
+    "text/html" = www;
+    "x-scheme-handler/http" = www;
+    "x-scheme-handler/https" = www;
+    "x-scheme-handler/about" = www;
+    "x-scheme-handler/unknown" = www;
+    # RICH-TEXT DOCUMENTS
+    "application/pdf" = pdf;
+    "text/markdown" = md;
+  };
+}

hosts/common/home/ssh.nix

@@ -0,0 +1,26 @@
+{ config, lib, sane-lib, ... }:
+
+with lib;
+let
+  host = config.networking.hostName;
+  user-pubkey-full = config.sane.ssh.pubkeys."colin@${host}" or {};
+  user-pubkey = user-pubkey-full.asUserKey or null;
+  host-keys = filter (k: k.user == "root") (attrValues config.sane.ssh.pubkeys);
+  known-hosts-text = concatStringsSep
+    "\n"
+    (map (k: k.asHostKey) host-keys)
+  ;
+in
+{
+  # ssh key is stored in private storage
+  sane.user.persist.private = [ ".ssh/id_ed25519" ];
+  sane.user.fs.".ssh/id_ed25519.pub" =
+    mkIf (user-pubkey != null) (sane-lib.fs.wantedText user-pubkey);
+  sane.user.fs.".ssh/known_hosts" = sane-lib.fs.wantedText known-hosts-text;
+
+  users.users.colin.openssh.authorizedKeys.keys =
+  let
+    user-keys = filter (k: k.user == "colin") (attrValues config.sane.ssh.pubkeys);
+  in
+    map (k: k.asUserKey) user-keys;
+}

hosts/common/home/xdg-dirs.nix

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

hosts/common/i2p.nix

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

hosts/common/ids.nix

@@ -0,0 +1,80 @@
+# TODO: migrate to nixpkgs `config.ids.uids`
+# - note that nixpkgs' `config.ids.uids` is strictly a database: it doesn't set anything by default
+#   whereas our impl sets the gid/uid of the user/group specified if they exist.
+{ ... }:
+
+{
+  # legacy servo users, some are inconvenient to migrate
+  sane.ids.dhcpcd.gid = 991;
+  sane.ids.dhcpcd.uid = 992;
+  sane.ids.gitea.gid = 993;
+  sane.ids.git.uid = 994;
+  sane.ids.jellyfin.gid = 994;
+  sane.ids.pleroma.gid = 995;
+  sane.ids.jellyfin.uid = 996;
+  sane.ids.acme.gid = 996;
+  sane.ids.pleroma.uid = 997;
+  sane.ids.acme.uid = 998;
+  sane.ids.matrix-appservice-irc.uid = 993;
+  sane.ids.matrix-appservice-irc.gid = 992;
+
+  # greetd (used by sway)
+  sane.ids.greeter.uid = 999;
+  sane.ids.greeter.gid = 999;
+
+  # new servo users
+  sane.ids.freshrss.uid = 2401;
+  sane.ids.freshrss.gid = 2401;
+  sane.ids.mediawiki.uid = 2402;
+  sane.ids.signald.uid = 2403;
+  sane.ids.signald.gid = 2403;
+  sane.ids.mautrix-signal.uid = 2404;
+  sane.ids.mautrix-signal.gid = 2404;
+  sane.ids.navidrome.uid = 2405;
+  sane.ids.navidrome.gid = 2405;
+  sane.ids.calibre-web.uid = 2406;
+  sane.ids.calibre-web.gid = 2406;
+  sane.ids.komga.uid = 2407;
+  sane.ids.komga.gid = 2407;
+  sane.ids.lemmy.uid = 2408;
+  sane.ids.lemmy.gid = 2408;
+  sane.ids.pict-rs.uid = 2409;
+  sane.ids.pict-rs.gid = 2409;
+
+  sane.ids.colin.uid = 1000;
+  sane.ids.guest.uid = 1100;
+
+  # found on all hosts
+  sane.ids.sshd.uid = 2001;  # 997
+  sane.ids.sshd.gid = 2001;  # 997
+  sane.ids.polkituser.gid = 2002;  # 998
+  sane.ids.systemd-coredump.gid = 2003;  # 996  # 2023/02/12-2023/02/28: upstream temporarily specified this as 151
+  sane.ids.nscd.uid = 2004;
+  sane.ids.nscd.gid = 2004;
+  sane.ids.systemd-oom.uid = 2005;
+  sane.ids.systemd-oom.gid = 2005;
+  sane.ids.wireshark.gid = 2006;
+
+  # found on graphical hosts
+  sane.ids.nm-iodine.uid = 2101;  # desko/moby/lappy
+
+  # found on desko host
+  # from services.usbmuxd
+  sane.ids.usbmux.uid = 2204;
+  sane.ids.usbmux.gid = 2204;
+
+
+  # originally found on moby host
+  # gnome core-shell
+  sane.ids.avahi.uid = 2304;
+  sane.ids.avahi.gid = 2304;
+  sane.ids.colord.uid = 2305;
+  sane.ids.colord.gid = 2305;
+  sane.ids.geoclue.uid = 2306;
+  sane.ids.geoclue.gid = 2306;
+  # gnome core-os-services
+  sane.ids.rtkit.uid = 2307;
+  sane.ids.rtkit.gid = 2307;
+  # phosh
+  sane.ids.feedbackd.gid = 2308;
+}

hosts/common/net.nix

@@ -1,16 +1,6 @@
-{ config, lib, pkgs, ... }:
+{ lib, ... }:
 
 {
-  # if using router's DNS, these mappings will already exist.
-  # if using a different DNS provider (which servo does), then we need to explicity provide them.
-  # ugly hack. would be better to get servo to somehow use the router's DNS
-  networking.hosts = {
-    "192.168.0.5" = [ "servo" ];
-    "192.168.0.20" = [ "lappy" ];
-    "192.168.0.22" = [ "desko" ];
-    "192.168.0.48" = [ "moby" ];
-  };
-
   # the default backend is "wpa_supplicant".
   # wpa_supplicant reliably picks weak APs to connect to.
   # see: <https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/474>
@@ -31,19 +21,7 @@
     General.RoamThreshold5G = "-52";  # default -76
   };
 
-  # TODO: don't need to depend on binsh if we were to use a nix-style shebang
-  system.activationScripts.linkIwdKeys = let
-    unwrapped = ../../scripts/install-iwd;
-    install-iwd = pkgs.writeShellApplication {
-      name = "install-iwd";
-      runtimeInputs = with pkgs; [ coreutils gnused ];
-      text = ''${unwrapped} "$@"'';
-    };
-  in (lib.stringAfter
-    [ "setupSecrets" "binsh" ]
-    ''
-    mkdir -p /var/lib/iwd
-    ${install-iwd}/bin/install-iwd /run/secrets/iwd /var/lib/iwd
-    ''
-  );
+  networking.firewall.allowedUDPPorts = [
+    1900  # to received UPnP advertisements. required by sane-ip-check-upnp
+  ];
 }

hosts/common/persist.nix

@@ -0,0 +1,18 @@
+{ ... }:
+
+{
+  sane.persist.stores.private.origin = "/home/colin/private";
+  # store /home/colin/a/b in /home/private/a/b instead of /home/private/home/colin/a/b
+  sane.persist.stores.private.prefix = "/home/colin";
+
+  sane.persist.sys.plaintext = [
+    "/var/log"
+    "/var/backup"  # for e.g. postgres dumps
+    # TODO: move elsewhere
+    "/var/lib/alsa"                # preserve output levels, default devices
+    "/var/lib/colord"              # preserve color calibrations (?)
+    "/var/lib/machines"            # maybe not needed, but would be painful to add a VM and forget.
+    "/var/lib/systemd/backlight"   # backlight brightness
+    "/var/lib/systemd/coredump"
+  ];
+}

hosts/common/programs/aerc.nix

@@ -0,0 +1,6 @@
+# Terminal UI mail client
+{ ... }:
+
+{
+  sane.programs.aerc.secrets.".config/aerc/accounts.conf" = ../../../secrets/common/aerc_accounts.conf.bin;
+}

hosts/common/programs/default.nix

@@ -0,0 +1,425 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (builtins) attrNames concatLists;
+  inherit (lib) mapAttrs mapAttrsToList mkDefault mkIf mkMerge optional;
+
+  flattenedPkgs = pkgs // (with pkgs; {
+    # XXX can't `inherit` a nested attr, so we move them to the toplevel
+    "cacert.unbundled" = pkgs.cacert.unbundled;
+    "gnome.cheese" = gnome.cheese;
+    "gnome.dconf-editor" = gnome.dconf-editor;
+    "gnome.file-roller" = gnome.file-roller;
+    "gnome.gnome-disk-utility" = gnome.gnome-disk-utility;
+    "gnome.gnome-maps" = gnome.gnome-maps;
+    "gnome.nautilus" = gnome.nautilus;
+    "gnome.gnome-system-monitor" = gnome.gnome-system-monitor;
+    "gnome.gnome-terminal" = gnome.gnome-terminal;
+    "gnome.gnome-weather" = gnome.gnome-weather;
+    "gnome.totem" = gnome.totem;
+    "libsForQt5.plasmatube" = libsForQt5.plasmatube;
+  });
+
+  sysadminPkgs = {
+    inherit (flattenedPkgs)
+      btrfs-progs
+      "cacert.unbundled"  # some services require unbundled /etc/ssl/certs
+      cryptsetup
+      dig
+      efibootmgr
+      fatresize
+      fd
+      file
+      gawk
+      git
+      gptfdisk
+      hdparm
+      htop
+      iftop
+      inetutils  # for telnet
+      iotop
+      iptables
+      jq
+      killall
+      lsof
+      miniupnpc
+      nano
+      netcat
+      nethogs
+      nmap
+      openssl
+      parted
+      pciutils
+      powertop
+      pstree
+      ripgrep
+      screen
+      smartmontools
+      socat
+      strace
+      subversion
+      tcpdump
+      tree
+      usbutils
+      wget
+      wirelesstools  # iwlist
+    ;
+  };
+  sysadminExtraPkgs = {
+    # application-specific packages
+    inherit (pkgs)
+      backblaze-b2
+      duplicity
+      sqlite  # to debug sqlite3 databases
+    ;
+  };
+
+  iphonePkgs = {
+    inherit (pkgs)
+      ifuse
+      ipfs
+      libimobiledevice
+    ;
+  };
+
+  tuiPkgs = {
+    inherit (pkgs)
+      aerc  # email client
+      offlineimap  # email mailox sync
+      visidata  # TUI spreadsheet viewer/editor
+      w3m
+    ;
+  };
+
+  # TODO: split these into smaller groups.
+  # - transcoders (ffmpeg, imagemagick) only wanted on desko/lappy ("powerutils"?)
+  consolePkgs = {
+    inherit (pkgs)
+      cdrtools
+      dmidecode
+      efivar
+      flashrom
+      fwupd
+      gh  # MS GitHub cli
+      git  # needed as a user package, for config.
+      gnupg
+      gocryptfs
+      gopass  # TODO: shouldn't be needed here
+      gopass-jsonapi
+      imagemagick
+      kitty  # TODO: move to GUI, but `ssh servo` from kitty sets `TERM=xterm-kitty` in the remove and breaks things
+      libsecret  # for managing user keyrings
+      lm_sensors  # for sensors-detect
+      lshw
+      ffmpeg
+      # memtester
+      neovim
+      # nettools
+      # networkmanager
+      nixpkgs-review
+      # nixos-generators
+      nmon
+      # node2nix
+      # oathToolkit  # for oathtool
+      # ponymix
+      pulsemixer
+      python3
+      ripgrep  # needed as a user package, for config.
+      rsync
+      # python3Packages.eyeD3  # music tagging
+      sane-scripts
+      sequoia
+      snapper
+      sops
+      sox
+      speedtest-cli
+      # ssh-to-age
+      sudo
+      # tageditor  # music tagging
+      unar
+      wireguard-tools
+      xdg-utils  # for xdg-open
+      # yarn
+      # youtube-dl
+      yt-dlp
+      zsh
+    ;
+  };
+
+  guiPkgs = {
+    inherit (flattenedPkgs)
+      # celluloid  # mpv frontend
+      clinfo
+      emote
+      evince  # works on phosh
+
+      # { pkg = fluffychat-moby; persist.plaintext = [ ".local/share/chat.fluffy.fluffychat" ]; }  # TODO: ship normal fluffychat on non-moby?
+
+      # foliate  # e-book reader
+
+      # XXX by default fractal stores its state in ~/.local/share/<UUID>.
+      # after logging in, manually change ~/.local/share/keyrings/... to point it to some predictable subdir.
+      # then reboot (so that libsecret daemon re-loads the keyring...?)
+      # { pkg = fractal-latest; persist.private = [ ".local/share/fractal" ]; }
+      # { pkg = fractal-next; persist.private = [ ".local/share/fractal" ]; }
+
+      # "gnome.cheese"
+      "gnome.dconf-editor"
+      # gnome-feeds  # RSS reader (with claimed mobile support)
+      "gnome.file-roller"
+      # "gnome.gnome-maps"  # works on phosh
+      "gnome.nautilus"
+      # gnome-podcasts
+      "gnome.gnome-system-monitor"
+      # "gnome.gnome-terminal"  # works on phosh
+      # "gnome.gnome-weather"
+      gpodder
+      gthumb
+      jellyfin-media-player
+      # lollypop
+      # mpv
+      networkmanagerapplet
+      # newsflash
+      nheko
+      pavucontrol
+      # picard  # music tagging
+      playerctl
+      # "libsForQt5.plasmatube"  # Youtube player
+      soundconverter
+      sublime-music
+      # tdesktop  # broken on phosh
+      # tokodon
+      vlc
+      # pleroma client (Electron). input is broken on phosh. TODO(2023/02/02): fix electron19 input (insecure)
+      # whalebird
+      xterm  # broken on phosh
+    ;
+  };
+  desktopGuiPkgs = {
+    inherit (flattenedPkgs)
+      audacity
+      brave  # for the integrated wallet -- as a backup
+      chromium
+      dino
+      electrum
+      element-desktop
+      font-manager
+      gajim  # XMPP client
+      gimp  # broken on phosh
+      "gnome.gnome-disk-utility"
+      # "gnome.totem"  # video player, supposedly supports UPnP
+      handbrake
+      hase
+      inkscape
+      kdenlive
+      kid3  # audio tagging
+      krita
+      libreoffice-fresh
+      mumble
+      obsidian
+      slic3r
+      steam
+      wireshark  # could maybe ship the cli as sysadmin pkg
+    ;
+  };
+  x86GuiPkgs = {
+    inherit (pkgs)
+      discord
+
+      # kaiteki  # Pleroma client
+      # gnome.zenity # for kaiteki (it will use qarma, kdialog, or zenity)
+      # gpt2tc  # XXX: unreliable mirror
+
+      # logseq  # Personal Knowledge Management
+      losslesscut-bin
+      makemkv
+      monero-gui
+      signal-desktop
+      spotify
+      tor-browser-bundle-bin
+      zecwallet-lite
+    ;
+  };
+
+  # packages not part of any package set; not enabled by default
+  otherPkgs = {
+    inherit (pkgs)
+      lemmy-server
+      mx-sanebot
+      stepmania
+    ;
+  };
+
+  # define -- but don't enable -- the packages in some attrset.
+  declarePkgs = pkgsAsAttrs: mapAttrs (_n: p: {
+    # no need to actually define the package here: it's defaulted
+    # package = mkDefault p;
+  }) pkgsAsAttrs;
+in
+{
+
+  imports = [
+    ./aerc.nix
+    ./git.nix
+    ./gnome-feeds.nix
+    ./gpodder.nix
+    ./kitty
+    ./libreoffice.nix
+    ./mpv.nix
+    ./neovim.nix
+    ./newsflash.nix
+    ./offlineimap.nix
+    ./ripgrep.nix
+    ./splatmoji.nix
+    ./sublime-music.nix
+    ./vlc.nix
+    ./web-browser.nix
+    ./wireshark.nix
+    ./zeal.nix
+    ./zsh
+  ];
+
+  config = {
+    sane.programs = mkMerge [
+      (declarePkgs consolePkgs)
+      (declarePkgs desktopGuiPkgs)
+      (declarePkgs guiPkgs)
+      (declarePkgs iphonePkgs)
+      (declarePkgs sysadminPkgs)
+      (declarePkgs sysadminExtraPkgs)
+      (declarePkgs tuiPkgs)
+      (declarePkgs x86GuiPkgs)
+      (declarePkgs otherPkgs)
+      {
+        # link the various package sets into their own meta packages
+        consoleUtils = {
+          package = null;
+          suggestedPrograms = attrNames consolePkgs;
+        };
+        desktopGuiApps = {
+          package = null;
+          suggestedPrograms = attrNames desktopGuiPkgs;
+        };
+        guiApps = {
+          package = null;
+          suggestedPrograms = (attrNames guiPkgs)
+            ++ [ "web-browser" ]
+            ++ [ "tuiApps" ]
+            ++ optional (pkgs.system == "x86_64-linux") "x86GuiApps";
+        };
+        iphoneUtils = {
+          package = null;
+          suggestedPrograms = attrNames iphonePkgs;
+        };
+        sysadminUtils = {
+          package = null;
+          suggestedPrograms = attrNames sysadminPkgs;
+        };
+        sysadminExtraUtils = {
+          package = null;
+          suggestedPrograms = attrNames sysadminExtraPkgs;
+        };
+        tuiApps = {
+          package = null;
+          suggestedPrograms = attrNames tuiPkgs;
+        };
+        x86GuiApps = {
+          package = null;
+          suggestedPrograms = attrNames x86GuiPkgs;
+        };
+      }
+      {
+        # nontrivial package definitions
+
+        dino.persist.private = [ ".local/share/dino" ];
+
+        # creds, but also 200 MB of node modules, etc
+        discord.persist.private = [ ".config/discord" ];
+
+        # creds/session keys, etc
+        element-desktop.persist.private = [ ".config/Element" ];
+
+        # `emote` will show a first-run dialog based on what's in this directory.
+        # mostly, it just keeps a LRU of previously-used emotes to optimize display order.
+        # TODO: package [smile](https://github.com/mijorus/smile) for probably a better mobile experience.
+        emote.persist.plaintext = [ ".local/share/Emote" ];
+
+        # MS GitHub stores auth token in .config
+        # TODO: we can populate gh's stuff statically; it even lets us use the same oauth across machines
+        gh.persist.private = [ ".config/gh" ];
+
+        ghostscript = {};  # used by imagemagick
+
+        imagemagick = {
+          package = pkgs.imagemagick.override {
+            ghostscriptSupport = true;
+          };
+          suggestedPrograms = [ "ghostscript" ];
+        };
+
+        # jellyfin stores things in a bunch of directories: this one persists auth info.
+        # it *might* be possible to populate this externally (it's Qt stuff), but likely to
+        # be fragile and take an hour+ to figure out.
+        jellyfin-media-player.persist.plaintext = [ ".local/share/Jellyfin Media Player" ];
+
+        # actual monero blockchain (not wallet/etc; safe to delete, just slow to regenerate)
+        # XXX: is it really safe to persist this? it doesn't have info that could de-anonymize if captured?
+        monero-gui.persist.plaintext = [ ".bitmonero" ];
+
+        mumble.persist.private = [ ".local/share/Mumble" ];
+
+        # not strictly necessary, but allows caching articles; offline use, etc.
+        nheko.persist.private = [
+          ".config/nheko"  # config file (including client token)
+          ".cache/nheko"  # media cache
+          ".local/share/nheko"  # per-account state database
+        ];
+
+        # settings (electron app)
+        obsidian.persist.plaintext = [ ".config/obsidian" ];
+
+        # creds, media
+        signal-desktop.persist.private = [ ".config/Signal" ];
+
+        # printer/filament settings
+        slic3r.persist.plaintext = [ ".Slic3r" ];
+
+        # creds, widevine .so download. TODO: could easily manage these statically.
+        spotify.persist.plaintext = [ ".config/spotify" ];
+
+        steam.persist.plaintext = [
+          ".steam"
+          ".local/share/Steam"
+        ];
+
+        tdesktop.persist.private = [ ".local/share/TelegramDesktop" ];
+
+        tokodon.persist.private = [ ".cache/KDE/tokodon" ];
+
+        # hardenedMalloc solves a crash at startup
+        # TODO 2023/02/02: is this safe to remove yet?
+        tor-browser-bundle-bin.package = pkgs.tor-browser-bundle-bin.override {
+          useHardenedMalloc = false;
+        };
+
+        whalebird.persist.private = [ ".config/Whalebird" ];
+
+        yarn.persist.plaintext = [ ".cache/yarn" ];
+
+        # zcash coins. safe to delete, just slow to regenerate (10-60 minutes)
+        zecwallet-lite.persist.private = [ ".zcash" ];
+      }
+    ];
+
+    # XXX: this might not be necessary. try removing this and cacert.unbundled (servo)?
+    environment.etc."ssl/certs".source = "${pkgs.cacert.unbundled}/etc/ssl/certs/*";
+
+    # steam requires system-level config for e.g. firewall or controller support
+    programs.steam = mkIf config.sane.programs.steam.enabled {
+      enable = true;
+      # not sure if needed: stole this whole snippet from the wiki
+      remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
+      dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
+    };
+  };
+}

hosts/common/programs/git.nix

@@ -0,0 +1,26 @@
+{ lib, pkgs, ... }:
+
+let
+  mkCfg = lib.generators.toINI { };
+in
+{
+  sane.programs.git.fs.".config/git/config".symlink.text = mkCfg {
+    # top-level options documented:
+    # - <https://git-scm.com/docs/git-config#_variables>
+
+    user.name = "Colin";
+    user.email = "colin@uninsane.org";
+
+    alias.co = "checkout";
+
+    # difftastic docs:
+    # - <https://difftastic.wilfred.me.uk/git.html>
+    diff.tool = "difftastic";
+    difftool.prompt = false;
+    "difftool \"difftastic\"".cmd = ''${pkgs.difftastic}/bin/difft "$LOCAL" "$REMOTE"'';
+    # now run `git difftool` to use difftastic git
+
+    # render dates as YYYY-MM-DD HH:MM:SS +TZ
+    log.date = "iso";
+  };
+}

hosts/common/programs/gnome-feeds.nix

@@ -0,0 +1,40 @@
+# gnome feeds RSS viewer
+{ config, lib, sane-lib, ... }:
+
+let
+  feeds = sane-lib.feeds;
+  all-feeds = config.sane.feeds;
+  wanted-feeds = feeds.filterByFormat ["text" "image"] all-feeds;
+in {
+  sane.programs.gnome-feeds.fs.".config/org.gabmus.gfeeds.json".symlink.text = builtins.toJSON {
+    # feed format is a map from URL to a dict,
+    #   with dict["tags"] a list of string tags.
+    feeds = sane-lib.mapToAttrs (feed: {
+      name = feed.url;
+      value.tags = [ feed.cat feed.freq ];
+    }) wanted-feeds;
+    dark_reader = false;
+    new_first = true;
+    # windowsize = {
+    #   width = 350;
+    #   height = 650;
+    # };
+    max_article_age_days = 90;
+    enable_js = false;
+    max_refresh_threads = 3;
+    # saved_items = {};
+    # read_items = [];
+    show_read_items = true;
+    full_article_title = true;
+    # views: "webview", "reader", "rsscont"
+    default_view = "rsscont";
+    open_links_externally = true;
+    full_feed_name = false;
+    refresh_on_startup = true;
+    tags = lib.unique (
+      (builtins.catAttrs "cat" wanted-feeds) ++ (builtins.catAttrs "freq" wanted-feeds)
+    );
+    open_youtube_externally = false;
+    media_player = "vlc";  # default: mpv
+  };
+}

hosts/common/programs/gpodder.nix

@@ -0,0 +1,17 @@
+# gnome feeds RSS viewer
+{ config, pkgs, sane-lib, ... }:
+
+let
+  feeds = sane-lib.feeds;
+  all-feeds = config.sane.feeds;
+  wanted-feeds = feeds.filterByFormat ["podcast"] all-feeds;
+in {
+  sane.programs.gpodder = {
+    package = pkgs.gpodder-configured;
+    fs.".config/gpodderFeeds.opml".symlink.text = feeds.feedsToOpml wanted-feeds;
+
+    # XXX: we preserve the whole thing because if we only preserve gPodder/Downloads
+    #   then startup is SLOW during feed import, and we might end up with zombie eps in the dl dir.
+    persist.plaintext = [ "gPodder" ];
+  };
+}

hosts/common/programs/kitty/PaperColor_dark.conf

@@ -0,0 +1,47 @@
+# vim:ft=kitty
+
+## name: PaperColor Dark
+## author: Nikyle Nguyen
+## license: MIT
+## blurb: Dark color scheme inspired by Google's Material Design 
+
+# special
+foreground		#d0d0d0
+background		#1c1c1c
+cursor			#d0d0d0
+cursor_text_color	background
+
+# black
+color0			#1c1c1c
+color8			#585858
+
+# red
+color1			#af005f
+color9			#5faf5f
+
+# green
+# "color2" is the green color used by ls to indicate executability
+#   both as text color
+#   or as bg color when the text is blue (color4)
+color2			#246a28
+color10			#2df200
+
+# yellow
+color3			#d7af5f
+color11			#af87d7
+
+# blue
+color4			#78c6ef
+color12			#ffaf00
+
+# magenta
+color5			#808080
+color13			#ff5faf
+
+# cyan
+color6			#d7875f
+color14			#00afaf
+
+# white
+color7			#d0d0d0
+color15			#5f8787

hosts/common/programs/kitty/default.nix

@@ -0,0 +1,70 @@
+{ ... }:
+
+{
+  sane.programs.kitty.fs.".config/kitty/kitty.conf".symlink.text = ''
+    # docs: https://sw.kovidgoyal.net/kitty/conf/
+    # disable terminal bell (when e.g. you backspace too many times)
+    enable_audio_bell no
+
+    map ctrl+n new_os_window_with_cwd
+    include ${./PaperColor_dark.conf}
+  '';
+
+  #  include ${pkgs.kitty-themes}/themes/PaperColor_dark.conf
+
+  # THEME CHOICES:
+  #   docs: https://github.com/kovidgoyal/kitty-themes
+  # theme = "1984 Light";  # dislike: awful, harsh blues/teals
+  # theme = "Adventure Time";  # dislike: harsh (dark)
+  # theme = "Atom One Light";  # GOOD: light theme. all color combos readable. not a huge fan of the blue.
+  # theme = "Belafonte Day";  # dislike: too low contrast for text colors
+  # theme = "Belafonte Night";  # better: dark theme that's easy on the eyes. all combos readable. low contrast.
+  # theme = "Catppuccin";  # dislike: a bit pale/low-contrast (dark)
+  # theme = "Desert";  # mediocre: colors are harsh
+  # theme = "Earthsong";  # BEST: dark theme. readable, good contrast. unique, but decent colors.
+  # theme = "Espresso Libre";  # better: dark theme. readable, but meh colors
+  # theme = "Forest Night";  # decent: very pastel. it's workable, but unconventional and muted/flat.
+  # theme = "Gruvbox Material Light Hard";  # mediocre light theme.
+  # theme = "kanagawabones";  # better: dark theme. colors are too background-y
+  # theme = "Kaolin Dark";  # dislike: too dark
+  # theme = "Kaolin Breeze";  # mediocre: not-too-harsh light theme, but some parts are poor contrast
+  # theme = "Later This Evening";  # mediocre: not-too-harsh dark theme, but cursor is poor contrast
+  # theme = "Material"; # decent: light theme, few colors.
+  # theme = "Mayukai";  # decent: not-too-harsh dark theme. the teal is a bit straining
+  # theme = "Nord";  # mediocre: pale background, low contrast
+  # theme = "One Half Light";  # better: not-too-harsh light theme. contrast could be better
+  # theme = "PaperColor Dark";  # BEST: dark theme, very readable still the colors are background-y
+  # theme = "Parasio Dark";  # dislike: too low contrast
+  # theme = "Pencil Light";  # better: not-too-harsh light theme. decent contrast.
+  # theme = "Pnevma";  # dislike: too low contrast
+  # theme = "Piatto Light";  # better: readable light theme. pleasing colors. powerline prompt is hard to read.
+  # theme = "Rosé Pine Dawn";  # GOOD: light theme. all color combinations are readable. it is very mild -- may need to manually tweak contrast. tasteful colors
+  # theme = "Rosé Pine Moon";  # GOOD: dark theme. tasteful colors. but background is a bit intense
+  # theme = "Sea Shells";  # mediocre. not all color combos are readable
+  # theme = "Solarized Light";  # mediocre: not-too-harsh light theme; GREAT background; but some colors are low contrast
+  # theme = "Solarized Dark Higher Contrast";  # better: dark theme, decent colors
+  # theme = "Sourcerer";  # mediocre: ugly colors
+  # theme = "Space Gray";  # mediocre: too muted
+  # theme = "Space Gray Eighties";  # better: all readable, decent colors
+  # theme = "Spacemacs";  # mediocre: too muted
+  # theme = "Spring";  # mediocre: readable light theme, but the teal is ugly.
+  # theme = "Srcery";  # better: highly readable. colors are ehhh
+  # theme = "Substrata";  # decent: nice colors, but a bit flat.
+  # theme = "Sundried";  # mediocre: the solar text makes me squint
+  # theme = "Symfonic";  # mediocre: the dark purple has low contrast to the black bg.
+  # theme = "Tango Light";  # dislike: teal is too grating
+  # theme = "Tokyo Night Day";  # medicore: too muted
+  # theme = "Tokyo Night";  # better: tasteful. a bit flat
+  # theme = "Tomorrow";  # GOOD: all color combinations are readable. contrast is slightly better than Rose. on the blander side
+  # theme = "Treehouse";  # dislike: the orange is harsh on my eyes.
+  # theme = "Urple";  # dislike: weird palette
+  # theme = "Warm Neon";  # decent: not-too-harsh dark theme. the green is a bit unattractive
+  # theme = "Wild Cherry";  # GOOD: dark theme: nice colors. a bit flat
+  # theme = "Xcodedark";  # dislike: bad palette
+  # theme = "citylights";  # decent: dark theme. some parts have just a bit low contrast
+  # theme = "neobones_light"; # better light theme. the background is maybe too muted
+  # theme = "vimbones";
+  # theme = "zenbones_dark";  # mediocre: readable, but meh colors
+  # theme = "zenbones_light";  # decent: light theme. all colors are readable. contrast is passable but not excellent. highlight color is BAD
+  # theme = "zenwritten_dark";  # mediocre: looks same as zenbones_dark
+}

hosts/common/programs/libreoffice.nix

@@ -0,0 +1,14 @@
+{ ... }:
+
+{
+  # libreoffice: disable first-run stuff
+  sane.programs.libreoffice-fresh.fs.".config/libreoffice/4/user/registrymodifications.xcu".symlink.text = ''
+    <?xml version="1.0" encoding="UTF-8"?>
+    <oor:items xmlns:oor="http://openoffice.org/2001/registry" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+      <item oor:path="/org.openoffice.Office.Common/Misc"><prop oor:name="FirstRun" oor:op="fuse"><value>false</value></prop></item>
+      <item oor:path="/org.openoffice.Office.Common/Misc"><prop oor:name="ShowTipOfTheDay" oor:op="fuse"><value>false</value></prop></item>
+    </oor:items>
+  '';
+  # <item oor:path="/org.openoffice.Setup/Product"><prop oor:name="LastTimeDonateShown" oor:op="fuse"><value>1667693880</value></prop></item>
+  # <item oor:path="/org.openoffice.Setup/Product"><prop oor:name="LastTimeGetInvolvedShown" oor:op="fuse"><value>1667693880</value></prop></item>
+}

hosts/common/programs/mpv.nix

@@ -0,0 +1,13 @@
+{ ... }:
+
+{
+  sane.programs.mpv = {
+    persist.plaintext = [ ".config/mpv/watch_later" ];
+    # format is <key>=%<length>%<value>
+    fs.".config/mpv/mpv.conf".symlink.text = ''
+      save-position-on-quit=%3%yes
+      keep-open=%3%yes
+    '';
+  };
+}
+

hosts/common/programs/neovim.nix

@@ -0,0 +1,129 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (builtins) map;
+  inherit (lib) concatMapStrings mkIf optionalString;
+  # this structure roughly mirrors home-manager's `programs.neovim.plugins` option
+  plugins = with pkgs.vimPlugins; [
+    # docs: surround-nvim: https://github.com/ur4ltz/surround.nvim/
+    # docs: vim-surround: https://github.com/tpope/vim-surround
+    { plugin = vim-surround; }
+    # docs: fzf-vim (fuzzy finder): https://github.com/junegunn/fzf.vim
+    { plugin = fzf-vim; }
+    ({
+      # docs: tex-conceal-vim: https://github.com/KeitaNakamura/tex-conceal.vim/
+      plugin = tex-conceal-vim;
+      type = "viml";
+      config = ''
+        " present prettier fractions
+        let g:tex_conceal_frac=1
+      '';
+    })
+    ({
+      plugin = vim-SyntaxRange;
+      type = "viml";
+      config = ''
+        " enable markdown-style codeblock highlighting for tex code
+        autocmd BufEnter * call SyntaxRange#Include('```tex', '```', 'tex', 'NonText')
+        " autocmd Syntax tex set conceallevel=2
+      '';
+    })
+    ({
+      # treesitter syntax highlighting: https://nixos.wiki/wiki/Tree_sitters
+      # docs: https://github.com/nvim-treesitter/nvim-treesitter
+      # config taken from: https://github.com/i077/system/blob/master/modules/home/neovim/default.nix
+      # this is required for tree-sitter to even highlight
+      plugin = nvim-treesitter.withAllGrammars;
+      type = "lua";
+      config = ''
+        require'nvim-treesitter.configs'.setup {
+          highlight = {
+            enable = true,
+            -- disable treesitter on Rust so that we can use SyntaxRange
+            -- and leverage TeX rendering in rust projects
+            disable = { "rust", "tex", "latex" },
+            -- disable = { "tex", "latex" },
+            -- true to also use builtin vim syntax highlighting when treesitter fails
+            additional_vim_regex_highlighting = false
+          },
+          incremental_selection = {
+            enable = true,
+            keymaps = {
+              init_selection = "gnn",
+              node_incremental = "grn",
+              mcope_incremental = "grc",
+              node_decremental = "grm"
+            }
+          },
+          indent = {
+            enable = true,
+            disable = {}
+          }
+        }
+
+        vim.o.foldmethod = 'expr'
+        vim.o.foldexpr = 'nvim_treesitter#foldexpr()'
+      '';
+    })
+  ];
+  plugin-packages = map (p: p.plugin) plugins;
+  plugin-config-tex = concatMapStrings (p: optionalString (p.type or "" == "viml") p.config) plugins;
+  plugin-config-lua = concatMapStrings (p: optionalString (p.type or "" == "lua") p.config) plugins;
+in
+{
+  # private because there could be sensitive things in the swap
+  sane.programs.neovim.persist.private = [ ".cache/vim-swap" ];
+
+  programs.neovim = mkIf config.sane.programs.neovim.enabled {
+    # neovim: https://github.com/neovim/neovim
+    enable = true;
+    viAlias = true;
+    vimAlias = true;
+    configure = {
+      packages.myVimPackage = {
+        start = plugin-packages;
+      };
+      customRC = ''
+        " let the terminal handle mouse events, that way i get OS-level ctrl+shift+c/etc
+        " this used to be default, until <https://github.com/neovim/neovim/pull/19290>
+        set mouse=
+
+        " copy/paste to system clipboard
+        set clipboard=unnamedplus
+
+        " screw tabs; always expand them into spaces
+        set expandtab
+
+        " at least don't open files with sections folded by default
+        set nofoldenable
+
+        " allow text substitutions for certain glyphs.
+        " higher number = more aggressive substitution (0, 1, 2, 3)
+        " i only make use of this for tex, but it's unclear how to
+        " apply that *just* to tex and retain the SyntaxRange stuff.
+        set conceallevel=2
+
+        " horizontal rule under the active line
+        " set cursorline
+
+        " highlight trailing space & related syntax errors (doesn't seem to work??)
+        " let c_space_errors=1
+        " let python_space_errors=1
+
+        " enable highlighting of leading/trailing spaces,
+        " and especially tabs
+        " source: https://www.reddit.com/r/neovim/comments/chlmfk/highlight_trailing_whitespaces_in_neovim/
+        set list
+        set listchars=tab:▷\·,trail:·,extends:◣,precedes:◢,nbsp:○
+
+        """"" PLUGIN CONFIG (tex)
+        ${plugin-config-tex}
+
+        """"" PLUGIN CONFIG (lua)
+        lua <<EOF
+        ${plugin-config-lua}
+        EOF
+      '';
+    };
+  };
+}

hosts/common/programs/newsflash.nix

@@ -0,0 +1,15 @@
+# news-flash RSS viewer
+{ config, sane-lib, ... }:
+
+let
+  feeds = sane-lib.feeds;
+  all-feeds = config.sane.feeds;
+  wanted-feeds = feeds.filterByFormat ["text" "image"] all-feeds;
+in {
+  sane.programs.newsflash = {
+    persist.plaintext = [ ".local/share/news-flash" ];
+    fs.".config/newsflashFeeds.opml".symlink.text =
+      feeds.feedsToOpml wanted-feeds
+    ;
+  };
+}

hosts/common/programs/offlineimap.nix

@@ -0,0 +1,12 @@
+# mail archiving/synchronization tool.
+#
+# manually download all emails for an account with
+# - `offlineimap -a <accountname>`
+#
+# view account names inside the secrets file, listed below.
+{ ... }:
+
+{
+  sane.programs.offlineimap.secrets.".config/offlineimap/config" = ../../../secrets/common/offlineimaprc.bin;
+}
+

hosts/common/programs/ripgrep.nix

@@ -0,0 +1,9 @@
+{ ... }:
+{
+  # .ignore file is read by ripgrep (rg), silver searcher (ag), maybe others.
+  # ignore translation files by default when searching, as they tend to have
+  # a LOT of duplicate text.
+  sane.programs.ripgrep.fs.".ignore".symlink.text = ''
+    po/
+  '';
+}

hosts/common/programs/splatmoji.nix

@@ -4,8 +4,10 @@
 { pkgs, ... }:
 
 {
-  home-manager.users.colin = {
-    xdg.configFile."splatmoji/splatmoji.config".text = ''
+  sane.programs.splatmoji = {
+    persist.plaintext = [ ".local/state/splatmoji" ];
+    fs.".config/splatmoji/splatmoji.config".symlink.text = ''
+      # XXX doesn't seem to understand ~ as shorthand for `$HOME`
       history_file=/home/colin/.local/state/splatmoji/history
       history_length=5
       # TODO: wayland equiv

hosts/common/programs/sublime-music.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+
+{
+  sane.programs.sublime-music = {
+    package = pkgs.sublime-music-mobile;
+    # sublime music persists any downloaded albums here.
+    # it doesn't obey a conventional ~/Music/{Artist}/{Album}/{Track} notation, so no symlinking
+    # config (e.g. server connection details) is persisted in ~/.config/sublime-music/config.json
+    #   possible to pass config as a CLI arg (sublime-music -c config.json)
+    persist.plaintext = [ ".local/share/sublime-music" ];
+
+    secrets.".config/sublime-music/config.json" = ../../../secrets/common/sublime_music_config.json.bin;
+  };
+}

hosts/common/programs/vlc.nix

@@ -0,0 +1,24 @@
+{ config, lib, sane-lib, ... }:
+
+let
+  feeds = sane-lib.feeds;
+  all-feeds = config.sane.feeds;
+  wanted-feeds = feeds.filterByFormat ["podcast"] all-feeds;
+  podcast-urls = lib.concatStringsSep "|" (
+    builtins.map (feed: feed.url) wanted-feeds
+  );
+in
+{
+  sane.programs.vlc = {
+    # vlc remembers play position in ~/.config/vlc/vlc-qt-interface.conf
+    persist.plaintext = [ ".config/vlc" ];
+    fs.".config/vlc/vlcrc".symlink.text = ''
+      [podcast]
+      podcast-urls=${podcast-urls}
+      [core]
+      metadata-network-access=0
+      [qt]
+      qt-privacy-ask=0
+    '';
+  };
+}

hosts/common/programs/web-browser.nix

@@ -0,0 +1,246 @@
+# common settings to toggle (at runtime, in about:config):
+#   > security.ssl.require_safe_negotiation
+
+# librewolf is a forked firefox which patches firefox to allow more things
+# (like default search engines) to be configurable at runtime.
+# many of the settings below won't have effect without those patches.
+# see: https://gitlab.com/librewolf-community/settings/-/blob/master/distribution/policies.json
+
+{ config, lib, pkgs, ...}:
+with lib;
+let
+  cfg = config.sane.programs.web-browser.config;
+  # allow easy switching between firefox and librewolf with `defaultSettings`, below
+  librewolfSettings = {
+    browser = pkgs.librewolf-unwrapped;
+    # browser = pkgs.librewolf-unwrapped.overrideAttrs (drv: {
+    #   # this allows side-loading unsigned addons
+    #   MOZ_REQUIRE_SIGNING = false;
+    # });
+    libName = "librewolf";
+    dotDir = ".librewolf";
+    cacheDir = ".cache/librewolf";  # TODO: is it?
+    desktop = "librewolf.desktop";
+  };
+  firefoxSettings = {
+    browser = pkgs.firefox-esr-unwrapped;
+    libName = "firefox";
+    dotDir = ".mozilla/firefox";
+    cacheDir = ".cache/mozilla";
+    desktop = "firefox.desktop";
+  };
+  # defaultSettings = firefoxSettings;
+  defaultSettings = librewolfSettings;
+
+  addon = name: extid: hash: pkgs.fetchFirefoxAddon {
+    inherit name hash;
+    url = "https://addons.mozilla.org/firefox/downloads/latest/${name}/latest.xpi";
+    # extid can be found by unar'ing the above xpi, and copying browser_specific_settings.gecko.id field
+    fixedExtid = extid;
+  };
+  localAddon = pkg: pkgs.fetchFirefoxAddon {
+    inherit (pkg) name;
+    src = "${pkg}/share/mozilla/extensions/\\{ec8030f7-c20a-464f-9b0e-13a3a9e97384\\}/${pkg.extid}.xpi";
+    fixedExtid = pkg.extid;
+  };
+
+  package = pkgs.wrapFirefox cfg.browser.browser {
+    # inherit the default librewolf.cfg
+    # it can be further customized via ~/.librewolf/librewolf.overrides.cfg
+    inherit (pkgs.librewolf-unwrapped) extraPrefsFiles;
+    inherit (cfg.browser) libName;
+
+    extraNativeMessagingHosts = optional cfg.addons.browserpass-extension.enable pkgs.browserpass;
+    # extraNativeMessagingHosts = [ pkgs.gopass-native-messaging-host ];
+
+    nixExtensions = concatMap (ext: optional ext.enable ext.package) (attrValues cfg.addons);
+
+    extraPolicies = {
+      FirefoxHome = {
+        Search = true;
+        Pocket = false;
+        Snippets = false;
+        TopSites = false;
+        Highlights = false;
+      };
+      NoDefaultBookmarks = true;
+      OfferToSaveLogins = false;
+      OfferToSaveLoginsDefault = false;
+      PasswordManagerEnabled = false;
+      SearchEngines = {
+        Default = "DuckDuckGo";
+      };
+      UserMessaging = {
+        ExtensionRecommendations = false;
+        SkipOnboarding = true;
+      };
+
+      # these were taken from Librewolf
+      AppUpdateURL = "https://localhost";
+      DisableAppUpdate = true;
+      OverrideFirstRunPage = "";
+      OverridePostUpdatePage = "";
+      DisableSystemAddonUpdate = true;
+      DisableFirefoxStudies = true;
+      DisableTelemetry = true;
+      DisableFeedbackCommands = true;
+      DisablePocket = true;
+      DisableSetDesktopBackground = false;
+
+      # remove many default search providers
+      # XXX this seems to prevent the `nixExtensions` from taking effect
+      # Extensions.Uninstall = [
+      #   "google@search.mozilla.org"
+      #   "bing@search.mozilla.org"
+      #   "amazondotcom@search.mozilla.org"
+      #   "ebay@search.mozilla.org"
+      #   "twitter@search.mozilla.org"
+      # ];
+      # XXX doesn't seem to have any effect...
+      # docs: https://github.com/mozilla/policy-templates#homepage
+      # Homepage = {
+      #   HomepageURL = "https://uninsane.org/";
+      #   StartPage = "homepage";
+      # };
+      # NewTabPage = true;
+    };
+    # extraPrefs = ...
+  };
+
+  addonOpts = types.submodule {
+    options = {
+      package = mkOption {
+        type = types.package;
+      };
+      enable = mkOption {
+        type = types.bool;
+      };
+    };
+  };
+
+  configOpts = {
+    options = {
+      browser = mkOption {
+        default = defaultSettings;
+        type = types.anything;
+      };
+      persistData = mkOption {
+        description = "optional store name to which persist browsing data (like history)";
+        type = types.nullOr types.str;
+        default = null;
+      };
+      persistCache = mkOption {
+        description = "optional store name to which persist browser cache";
+        type = types.nullOr types.str;
+        default = "cryptClearOnBoot";
+      };
+      addons = mkOption {
+        type = types.attrsOf addonOpts;
+        default = {};
+      };
+    };
+  };
+in
+{
+  config = mkMerge [
+    ({
+      sane.programs.web-browser.configOption = mkOption {
+        type = types.submodule configOpts;
+        default = {};
+      };
+      sane.programs.web-browser.config.addons = {
+        # get names from:
+        # - ~/ref/nix-community/nur-combined/repos/rycee/pkgs/firefox-addons/generated-firefox-addons.nix
+        # `wget ...xpi`; `unar ...xpi`; `cat */manifest.json | jq '.browser_specific_settings.gecko.id'`
+        browserpass-extension = {
+          # package = addon "browserpass-ce" "browserpass@maximbaz.com" "sha256-sXgUBbRvMnRpeIW1MTkmTcoqtW/8RDXAkxAq1evFkpc=";
+          package = localAddon pkgs.browserpass-extension;
+          enable = lib.mkDefault true;
+        };
+
+        # TODO: build bypass-paywalls from source? it's mysteriously disappeared from the Mozilla store.
+        # bypass-paywalls-clean.package = addon "bypass-paywalls-clean" "{d133e097-46d9-4ecc-9903-fa6a722a6e0e}" "sha256-oUwdqdAwV3DezaTtOMx7A/s4lzIws+t2f08mwk+324k=";
+        # bypass-paywalls-clean.enable = lib.mkDefault true;
+
+        ether-metamask = {
+          package = addon "ether-metamask" "webextension@metamask.io" "sha256-G+MwJDOcsaxYSUXjahHJmkWnjLeQ0Wven8DU/lGeMzA=";
+          enable = lib.mkDefault true;
+        };
+        i2p-in-private-browsing = {
+          package = addon "i2p-in-private-browsing" "i2ppb@eyedeekay.github.io" "sha256-dJcJ3jxeAeAkRvhODeIVrCflvX+S4E0wT/PyYzQBQWs=";
+          enable = lib.mkDefault config.services.i2p.enable;
+        };
+        sidebery = {
+          package = addon "sidebery" "{3c078156-979c-498b-8990-85f7987dd929}" "sha256-YONfK/rIjlsrTgRHIt3km07Q7KnpIW89Z9r92ZSCc6w=";
+          enable = lib.mkDefault true;
+        };
+        sponsorblock = {
+          package = addon "sponsorblock" "sponsorBlocker@ajay.app" "sha256-hRsvLaAsVm3dALsTrJqHTNgRFAQcU7XSaGhr5G6+mFs=";
+          enable = lib.mkDefault true;
+        };
+        ublacklist = {
+          package = addon "ublacklist" "@ublacklist" "sha256-RqY5iHzbL2qizth7aguyOKWPyINXmrwOlf/OsfqAS48=";
+          enable = lib.mkDefault true;
+        };
+        ublock-origin = {
+          package = addon "ublock-origin" "uBlock0@raymondhill.net" "sha256-eHlQrU/b9X/6sTbHBpGAd+0VsLT7IrVCnd0AQ948lyA=";
+          enable = lib.mkDefault true;
+        };
+      };
+    })
+    ({
+      sane.programs.web-browser = {
+        inherit package;
+
+        # uBlock filter list configuration.
+        # specifically, enable the GDPR cookie prompt blocker.
+        # data.toOverwrite.filterLists is additive (i.e. it supplements the default filters)
+        # this configuration method is documented here:
+        # - <https://github.com/gorhill/uBlock/issues/2986#issuecomment-364035002>
+        # the specific attribute path is found via scraping ublock code here:
+        # - <https://github.com/gorhill/uBlock/blob/master/src/js/storage.js>
+        # - <https://github.com/gorhill/uBlock/blob/master/assets/assets.json>
+        fs."${cfg.browser.dotDir}/managed-storage/uBlock0@raymondhill.net.json".symlink.text = ''
+          {
+           "name": "uBlock0@raymondhill.net",
+           "description": "ignored",
+           "type": "storage",
+           "data": {
+              "toOverwrite": "{\"filterLists\": [\"fanboy-cookiemonster\"]}"
+           }
+          }
+        '';
+        fs."${cfg.browser.dotDir}/${cfg.browser.libName}.overrides.cfg".symlink.text = ''
+          // if we can't query the revocation status of a SSL cert because the issuer is offline,
+          // treat it as unrevoked.
+          // see: <https://librewolf.net/docs/faq/#im-getting-sec_error_ocsp_server_error-what-can-i-do>
+          defaultPref("security.OCSP.require", false);
+        '';
+        fs."${cfg.browser.dotDir}/default".dir = {};
+        # instruct Firefox to put the profile in a predictable directory (so we can do things like persist just it).
+        # XXX: the directory *must* exist, even if empty; Firefox will not create the directory itself.
+        fs."${cfg.browser.dotDir}/profiles.ini".symlink.text = ''
+          [Profile0]
+          Name=default
+          IsRelative=1
+          Path=default
+          Default=1
+
+          [General]
+          StartWithLastProfile=1
+        '';
+      };
+    })
+    (mkIf config.sane.programs.web-browser.enabled {
+      # TODO: move the persistence into the sane.programs API (above)
+      # flush the cache to disk to avoid it taking up too much tmp
+      sane.user.persist.byPath."${cfg.browser.cacheDir}" = lib.mkIf (cfg.persistCache != null) {
+        store = cfg.persistCache;
+      };
+
+      sane.user.persist.byPath."${cfg.browser.dotDir}/default" = lib.mkIf (cfg.persistData != null) {
+        store = cfg.persistData;
+      };
+    })
+  ];
+}

hosts/common/programs/wireshark.nix

@@ -0,0 +1,5 @@
+{ config, ... }:
+{
+  sane.programs.wireshark = {};
+  programs.wireshark.enable = config.sane.programs.wireshark.enabled;
+}

hosts/common/programs/zeal.nix

@@ -0,0 +1,55 @@
+{ config, lib, pkgs, ... }:
+let
+  inherit (builtins) map;
+  inherit (lib) mkIf mkOption optionalString types;
+  cfg = config.sane.programs.docsets.config;
+  configOpts = types.submodule {
+    options = {
+      rustPkgs = mkOption {
+        type = types.listOf types.str;
+        default = [ ];
+      };
+    };
+  };
+in {
+  sane.programs.zeal = {
+    package = pkgs.zeal-qt5;
+    persist.plaintext = [
+      ".cache/Zeal"
+      ".local/share/Zeal"
+    ];
+    fs.".local/share/Zeal/Zeal/docsets/system".symlink.target = "/run/current-system/sw/share/docset";
+    suggestedPrograms = [ "docsets" ];
+  };
+
+  sane.programs.docsets = {
+    configOption = mkOption {
+      type = configOpts;
+      default = {};
+    };
+    package = pkgs.symlinkJoin {
+      name = "docsets";
+      # build each package with rust docs
+      paths = map (name:
+        let
+          orig = pkgs."${name}";
+          withDocs = orig.overrideAttrs (upstream: {
+            nativeBuildInputs = upstream.nativeBuildInputs or [] ++ [
+              pkgs.cargoDocsetHook
+            ];
+          });
+        in
+        "${toString withDocs}/share/docset"
+      ) cfg.rustPkgs;
+      # link only the docs (not any binaries)
+      postBuild = optionalString (cfg.rustPkgs != []) ''
+        mkdir -p $out/share/docset
+        mv $out/*.docset $out/share/docset
+      '';
+    };
+  };
+
+  environment.pathsToLink = mkIf config.sane.programs.zeal.enabled [
+    "/share/docset"
+  ];
+}

hosts/common/programs/zsh/default.nix

@@ -0,0 +1,166 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkMerge mkOption types;
+  cfg = config.sane.zsh;
+  # powerlevel10k prompt config
+  # p10k.zsh is the auto-generated config, and i overwrite those defaults here, below.
+  p10k-overrides = ''
+    # powerlevel10k launches a gitstatusd daemon to accelerate git prompt queries.
+    # this keeps open file handles for any git repo i touch for 60 minutes (by default).
+    # that prevents unmounting whatever device the git repo is on -- particularly problematic for ~/private.
+    # i can disable gitstatusd and get slower fallback git queries:
+    # - either universally
+    # - or selectively by path
+    # see: <https://github.com/romkatv/powerlevel10k/issues/246>
+    typeset -g POWERLEVEL9K_VCS_DISABLED_DIR_PATTERN='(/home/colin/private/*|/home/colin/knowledge/*)'
+    # typeset -g POWERLEVEL9K_DISABLE_GITSTATUS=true
+
+    # show user@host also when logged into the current machine.
+    # default behavior is to show it only over ssh.
+    typeset -g POWERLEVEL9K_CONTEXT_{DEFAULT,SUDO}_CONTENT_EXPANSION='$P9K_CONTENT'
+  '';
+
+  prezto-init = ''
+    source ${pkgs.zsh-autosuggestions}/share/zsh-autosuggestions/zsh-autosuggestions.zsh
+    source ${pkgs.zsh-syntax-highlighting}/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
+    source ${pkgs.zsh-prezto}/share/zsh-prezto/init.zsh
+  '';
+in
+{
+  options = {
+    sane.zsh = {
+      showDeadlines = mkOption {
+        type = types.bool;
+        default = true;
+        description = "show upcoming deadlines (frommy PKM) upon shell init";
+      };
+    };
+  };
+
+  config = mkMerge [
+    ({
+      sane.programs.zsh = {
+        persist.plaintext = [
+          # we don't need to full zsh dir -- just the history file --
+          # but zsh will sometimes backup the history file and we get fewer errors if we do proper mounts instead of symlinks.
+          # TODO: should be private?
+          ".local/share/zsh"
+          # cache gitstatus otherwise p10k fetched it from the net EVERY BOOT
+          ".cache/gitstatus"
+        ];
+
+        # zsh/prezto complains if zshrc doesn't exist; but it does allow an "empty" file.
+        fs.".config/zsh/.zshrc".symlink.text = "# ";
+
+        # prezto = oh-my-zsh fork; controls prompt, auto-completion, etc.
+        # see: https://github.com/sorin-ionescu/prezto
+        # i believe this file is auto-sourced by the prezto init.zsh script.
+        fs.".config/zsh/.zpreztorc".symlink.text = ''
+          zstyle ':prezto:*:*' color 'yes'
+
+          # modules (they ship with prezto):
+          # ENVIRONMENT: configures jobs to persist after shell exit; other basic niceties
+          # TERMINAL: auto-titles terminal (e.g. based on cwd)
+          # EDITOR: configures shortcuts like Ctrl+U=undo, Ctrl+L=clear
+          # HISTORY: `history-stat` alias, setopts for good history defaults
+          # DIRECTORY: sets AUTO_CD, adds `d` alias to list directory stack, and `1`-`9` to cd that far back the stack
+          # SPECTRUM: helpers for term colors and styling. used by prompts? might be unnecessary
+          # UTILITY: configures aliases like `ll`, `la`, disables globbing for things like rsync
+          #   adds aliases like `get` to fetch a file. also adds `http-serve` alias??
+          # COMPLETION: tab completion. requires `utility` module prior to loading
+          # TODO: enable AUTO_PARAM_SLASH
+          zstyle ':prezto:load' pmodule \
+            'environment' \
+            'terminal' \
+            'editor' \
+            'history' \
+            'directory' \
+            'spectrum' \
+            'utility' \
+            'completion' \
+            'prompt'
+
+          # default keymap. try also `vicmd` (vim normal mode, AKA "cmd mode") or `vi`.
+          zstyle ':prezto:module:editor' key-bindings 'emacs'
+
+          zstyle ':prezto:module:prompt' theme 'powerlevel10k'
+
+          # disable `mv` confirmation (and `rm`, too, unfortunately)
+          zstyle ':prezto:module:utility' safe-ops 'no'
+        '';
+      };
+    })
+    (mkIf config.sane.programs.zsh.enabled {
+      # enable zsh completions
+      environment.pathsToLink = [ "/share/zsh" ];
+
+      programs.zsh = {
+        enable = true;
+        histFile = "$HOME/.local/share/zsh/history";
+        shellAliases = {
+          ":q" = "exit";
+          # common typos
+          "cd.." = "cd ..";
+          "cd../" = "cd ../";
+        };
+        setOptions = [
+          # defaults:
+          "HIST_IGNORE_DUPS"
+          "SHARE_HISTORY"
+          "HIST_FCNTL_LOCK"
+          # disable `rm *` confirmations
+          "rmstarsilent"
+        ];
+
+        # .zshenv config:
+        shellInit = ''
+          ZDOTDIR=$HOME/.config/zsh
+        '';
+
+        # .zshrc config:
+        interactiveShellInit =
+          (builtins.readFile ./p10k.zsh)
+        + p10k-overrides
+        + prezto-init
+        + ''
+          # zmv is a way to do rich moves/renames, with pattern matching/substitution.
+          # see for an example: <https://filipe.kiss.ink/zmv-zsh-rename/>
+          autoload -Uz zmv
+
+          HISTORY_IGNORE='(sane-shutdown *|sane-reboot *|rm *|nixos-rebuild.* switch)'
+
+          # extra aliases
+          # TODO: move to `shellAliases` config?
+          function nd() {
+            mkdir -p "$1";
+            pushd "$1";
+          }
+        ''
+        + lib.optionalString cfg.showDeadlines ''
+          ${pkgs.sane-scripts}/bin/sane-deadlines
+        ''
+        + ''
+          # auto-cd into any of these dirs by typing them and pressing 'enter':
+          hash -d 3rd="/home/colin/dev/3rd"
+          hash -d dev="/home/colin/dev"
+          hash -d knowledge="/home/colin/knowledge"
+          hash -d nixos="/home/colin/nixos"
+          hash -d nixpkgs="/home/colin/dev/3rd/nixpkgs"
+          hash -d ref="/home/colin/ref"
+          hash -d secrets="/home/colin/knowledge/secrets"
+          hash -d tmp="/home/colin/tmp"
+          hash -d uninsane="/home/colin/dev/uninsane"
+          hash -d Videos="/home/colin/Videos"
+        '';
+
+        syntaxHighlighting.enable = true;
+        vteIntegration = true;
+      };
+
+      # enable a command-not-found hook to show nix packages that might provide the binary typed.
+      programs.nix-index.enable = true;
+      programs.command-not-found.enable = false;  #< mutually exclusive with nix-index
+    })
+  ];
+}

hosts/common/secrets.nix

@@ -1,38 +1,49 @@
-{ config, ... }:
+# SOPS configuration:
+#   docs: https://github.com/Mic92/sops-nix
+#
+# for each new user you want to edit sops files:
+# create a private age key from ssh key:
+#   $ mkdir -p ~/.config/sops/age; ssh-to-age -private-key -i ~/.ssh/id_ed25519 > ~/.config/sops/age/keys.txt; chmod 600 ~/.config/sops/age/keys.txt
+#   if the private key was password protected, then first decrypt it:
+#     $ cp ~/.ssh/id_ed25519 /tmp/id_ed25519
+#     $ ssh-keygen -p -N "" -f /tmp/id_ed25519
+#
+# for each user you want to decrypt secrets:
+#   $ cat ~/.ssh/id_ed25519.pub | ssh-to-age
+#   add the result to .sops.yaml
+#   since we specify ssh pubkeys in the nix config, you can just grep for `ssh-ed25519` here and use those instead
+#
+# for each host you want to decrypt secrets:
+#   $ cat /etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age
+#   add the result to .sops.yaml
+#   $ sops updatekeys secrets/example.yaml
+#
+# to create a new secret:
+#   $ sops secrets/example.yaml
+#   control access below (sops.secret.<x>.owner = ...)
+#
+# to read a secret:
+#   $ cat /run/secrets/example_key
 
+{ config, lib, sane-lib, ... }:
+
+let
+  inherit (lib.strings) hasSuffix removeSuffix;
+  secretsForHost = host: sane-lib.joinAttrsets (
+    map
+      (path: lib.optionalAttrs (hasSuffix ".bin" path) (sane-lib.nameValueToAttrs {
+        name = removeSuffix ".bin" path;
+        value = {
+          sopsFile = ../../secrets/${host}/${path};
+          format = "binary";
+        };
+      }))
+      (sane-lib.enumerateFilePaths ../../secrets/${host})
+  );
+in
 {
-  # SOPS configuration:
-  #   docs: https://github.com/Mic92/sops-nix
-  #
-  # for each new user you want to edit sops files:
-  # create a private age key from ssh key:
-  #   $ mkdir -p ~/.config/sops/age; ssh-to-age -private-key -i ~/.ssh/id_ed25519 > ~/.config/sops/age/keys.txt; chmod 600 ~/.config/sops/age/keys.txt
-  #   if the private key was password protected, then first decrypt it:
-  #     $ cp ~/.ssh/id_ed25519 /tmp/id_ed25519
-  #     $ ssh-keygen -p -N "" -f /tmp/id_ed25519
-  #
-  # for each user you want to decrypt secrets:
-  #   $ cat ~/.ssh/id_ed25519.pub | ssh-to-age
-  #   add the result to .sops.yaml
-  #   since we specify ssh pubkeys in the nix config, you can just grep for `ssh-ed25519` here and use those instead
-  #
-  # for each host you want to decrypt secrets:
-  #   $ cat /etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age
-  #   add the result to .sops.yaml
-  #   $ sops updatekeys secrets/example.yaml
-  #
-  # to create a new secret:
-  #   $ sops secrets/example.yaml
-  #   control access below (sops.secret.<x>.owner = ...)
-  #
-  # to read a secret:
-  #   $ cat /run/secrets/example_key
 
   # sops.age.sshKeyPaths = [ "/home/colin/.ssh/id_ed25519_dec" ];
-  # This will add secrets.yaml to the nix store
-  # You can avoid this by adding a string to the full path instead, i.e.
-  # sops.defaultSopsFile = "/root/.sops/secrets/example.yaml";
-  sops.defaultSopsFile = ../../secrets/universal.yaml;
   sops.gnupg.sshKeyPaths = [];  # disable RSA key import
   # This is using an age key that is expected to already be in the filesystem
   # sops.age.keyFile = "/home/colin/.ssh/age.pub";
@@ -45,80 +56,15 @@
   # };
   # sops.secrets."myservice/my_subdir/my_secret" = {};
 
-  ## universal secrets
-  # TODO: glob these?
-
-  sops.secrets."jackett_apikey" = {
-    sopsFile = ../../secrets/universal.yaml;
-    owner = config.users.users.colin.name;
-  };
-  sops.secrets."router_passwd" = {
-    sopsFile = ../../secrets/universal.yaml;
-  };
-  sops.secrets."wg_ovpnd_us_privkey" = {
-    sopsFile = ../../secrets/universal.yaml;
-  };
-  sops.secrets."wg_ovpnd_us-atl_privkey" = {
-    sopsFile = ../../secrets/universal.yaml;
-  };
-  sops.secrets."wg_ovpnd_us-mi_privkey" = {
-    sopsFile = ../../secrets/universal.yaml;
-  };
-  sops.secrets."wg_ovpnd_ukr_privkey" = {
-    sopsFile = ../../secrets/universal.yaml;
-  };
-
-  sops.secrets."snippets" = {
-    sopsFile = ../../secrets/universal/snippets.bin;
-    format = "binary";
-    owner = config.users.users.colin.name;
-  };
-
-  sops.secrets."bt/car" = {
-    sopsFile = ../../secrets/universal/bt/car.bin;
-    format = "binary";
-  };
-  sops.secrets."bt/earbuds" = {
-    sopsFile = ../../secrets/universal/bt/earbuds.bin;
-    format = "binary";
-  };
-  sops.secrets."bt/portable-speaker" = {
-    sopsFile = ../../secrets/universal/bt/portable-speaker.bin;
-    format = "binary";
-  };
-
-  sops.secrets."iwd/community-university.psk" = {
-    sopsFile = ../../secrets/universal/net/community-university.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/friend-libertarian-dod.psk" = {
-    sopsFile = ../../secrets/universal/net/friend-libertarian-dod.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/friend-rationalist-empathist.psk" = {
-    sopsFile = ../../secrets/universal/net/friend-rationalist-empathist.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/home-bedroom.psk" = {
-    sopsFile = ../../secrets/universal/net/home-bedroom.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/home-shared-24G.psk" = {
-    sopsFile = ../../secrets/universal/net/home-shared-24G.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/home-shared.psk" = {
-    sopsFile = ../../secrets/universal/net/home-shared.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/iphone" = {
-    sopsFile = ../../secrets/universal/net/iphone.psk.bin;
-    format = "binary";
-  };
-  sops.secrets."iwd/parents" = {
-    sopsFile = ../../secrets/universal/net/parents.psk.bin;
-    format = "binary";
-  };
+  sops.secrets = lib.mkMerge [
+    (secretsForHost "common")
+    (secretsForHost config.networking.hostName)
+    {
+      "jackett_apikey".owner = config.users.users.colin.name;
+      "mx-sanebot-env".owner = config.users.users.colin.name;
+      "snippets".owner = config.users.users.colin.name;
+    }
+  ];
 }
 
 

hosts/common/ssh.nix

@@ -1,10 +1,33 @@
-{ config, lib, ... }:
+{ config, lib, sane-data, sane-lib, ... }:
+
+let
+  inherit (builtins) head map mapAttrs tail;
+  inherit (lib) concatStringsSep mkMerge reverseList;
+in
 {
-  environment.etc."ssh/host_keys".source = "/nix/persist/etc/ssh/host_keys";
-
-  services.openssh.hostKeys = [
-    { type = "rsa"; bits = 4096; path = "/etc/ssh/host_keys/ssh_host_rsa_key"; }
-    { type = "ed25519"; path = "/etc/ssh/host_keys/ssh_host_ed25519_key"; }
-  ];
+  sane.ssh.pubkeys =
+  let
+    # path is a DNS-style path like [ "org" "uninsane" "root" ]
+    keyNameForPath = path:
+      let
+        rev = reverseList path;
+        name = head rev;
+        host = concatStringsSep "." (tail rev);
+      in
+      "${name}@${host}";
 
+    # [{ path :: [String], value :: String }] for the keys we want to install
+    globalKeys = sane-lib.flattenAttrs sane-data.keys;
+    domainKeys = sane-lib.flattenAttrs (
+      mapAttrs (host: cfg: {
+        colin = cfg.ssh.user_pubkey;
+        root = cfg.ssh.host_pubkey;
+      }) config.sane.hosts.by-name
+    );
+  in mkMerge (map
+    ({ path, value }: {
+      "${keyNameForPath path}" = lib.mkIf (value != null) value;
+    })
+    (globalKeys ++ domainKeys)
+  );
 }

hosts/common/users.nix

@@ -1,17 +1,14 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, lib, sane-lib, ... }:
 
 # installer docs: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/installation-device.nix
 with lib;
 let
-  cfg = config.sane.users;
-  # see nixpkgs/nixos/modules/services/networking/dhcpcd.nix
-  hasDHCP = config.networking.dhcpcd.enable &&
-    (config.networking.useDHCP || any (i: i.useDHCP == true) (attrValues config.networking.interfaces));
-
+  cfg = config.sane.guest;
+  fs = sane-lib.fs;
 in
 {
   options = {
-    sane.users.guest.enable = mkOption {
+    sane.guest.enable = mkOption {
       default = false;
       type = types.bool;
     };
@@ -28,8 +25,7 @@ in
       isNormalUser = true;
       home = "/home/colin";
       createHome = true;
-      homeMode = "700";
-      uid = config.sane.allocations.colin-uid;
+      homeMode = "0700";
       # i don't get exactly what this is, but nixos defaults to this non-deterministically
       # in /var/lib/nixos/auto-subuid-map and i don't want that.
       subUidRanges = [
@@ -37,13 +33,14 @@ in
       ];
       group = "users";
       extraGroups = [
-        "wheel"
-        "nixbuild"
-        "networkmanager"
-        # phosh/mobile. XXX colin: unsure if necessary
-        "video"
+        "dialout"  # required for modem access (moby)
         "feedbackd"
-        "dialout" # required for modem access
+        "input"  # for /dev/input/<xyz>: sxmo
+        "networkmanager"
+        "nixbuild"
+        "video"  # phosh/mobile. XXX colin: unsure if necessary
+        "wheel"
+        "wireshark"
       ];
 
       # initial password is empty, in case anything goes wrong.
@@ -52,53 +49,71 @@ in
       passwordFile = lib.mkIf (config.sops.secrets ? "colin-passwd") config.sops.secrets.colin-passwd.path;
 
       shell = pkgs.zsh;
-      openssh.authorizedKeys.keys = builtins.attrValues (import ../../modules/pubkeys.nix).users;
 
+      # mount encrypted stuff at login
       # some other nix pam users:
       # - <https://github.com/g00pix/nixconf/blob/32c04f6fa843fed97639dd3f09e157668d3eea1f/profiles/sshfs.nix>
       # - <https://github.com/lourkeur/distro/blob/11173454c6bb50f7ccab28cc2c757dca21446d1d/nixos/profiles/users/louis-full.nix>
       # - <https://github.com/dnr/sample-nix-code/blob/03494480c1fae550c033aa54fd96aeb3827761c5/nixos/laptop.nix>
-      pamMount = {
-        # mount encrypted stuff at login
-        # requires that login password == fs encryption password
-        fstype = "fuse";
-        path = "gocryptfs#/nix/persist/home/colin/private";
-        # path = "${pkgs.gocryptfs}/bin/gocryptfs#/nix/persist/home/colin/private";
-        # fstype = "fuse.gocryptfs";
-        # path = "/nix/persist/home/colin/private";
-        mountpoint = "/home/colin/private";
-        # without allow_other, *root* isn't allowed to list anything in ~/private.
-        # which is weird (root can just `su colin`), but probably doesn't *hurt* anything -- right?
-        options="nodev,nosuid,quiet";  # allow_other
+      pamMount = let
+        priv = config.fileSystems."/home/colin/private";
+      in {
+        fstype = priv.fsType;
+        path = priv.device;
+        mountpoint = priv.mountPoint;
+        options = builtins.concatStringsSep "," priv.options;
       };
     };
 
-    # required for PAM to find gocryptfs
-    security.pam.mount.additionalSearchPaths = [ pkgs.gocryptfs ];
     security.pam.mount.enable = true;
-    # security.pam.mount.debugLevel = 1;
-    # security.pam.enableSSHAgentAuth = true; # ??
-    # needed for `allow_other` in e.g. gocryptfs mounts
-    # or i guess going through mount.fuse sets suid so that's not necessary?
-    # programs.fuse.userAllowOther = true;
 
-    sane.impermanence.home-dirs = [
-      # cache is probably too big to fit on the tmpfs
-      # { directory = ".cache"; encryptedClearOnBoot = true; }
-      { directory = ".cache/mozilla"; encryptedClearOnBoot = true; }
-      ".cargo"
-      ".rustup"
-      # TODO: move this to ~/private!
-      ".local/share/keyrings"
+    sane.users.colin.default = true;
+    # ensure ~ perms are known to sane.fs module.
+    # TODO: this is generic enough to be lifted up into sane.fs itself.
+    sane.fs."/home/colin".dir.acl = {
+      user = "colin";
+      group = config.users.users.colin.group;
+      mode = config.users.users.colin.homeMode;
+    };
+
+    sane.user.persist.plaintext = [
+      "archive"
+      "dev"
+      # TODO: records should be private
+      "records"
+      "ref"
+      "tmp"
+      "use"
+      "Music"
+      "Pictures"
+      "Videos"
+
+      ".cache/nix"
+      ".cache/nix-index"
+
+      # ".cargo"
+      # ".rustup"
     ];
 
-    sane.impermanence.dirs = mkIf cfg.guest.enable [
-      { user = "guest"; group = "users"; directory = "/home/guest"; }
+    # convenience
+    sane.user.fs."knowledge" = fs.wantedSymlinkTo "private/knowledge";
+    sane.user.fs."nixos" = fs.wantedSymlinkTo "dev/nixos";
+    sane.user.fs."Books/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Books";
+    sane.user.fs."Videos/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Videos";
+    sane.user.fs."Videos/servo-incomplete" = fs.wantedSymlinkTo "/mnt/servo-media/incomplete";
+    sane.user.fs."Music/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Music";
+    sane.user.fs."Pictures/servo-macros" = fs.wantedSymlinkTo "/mnt/servo-media/Pictures/macros";
+
+    # used by password managers, e.g. unix `pass`
+    sane.user.fs.".password-store" = fs.wantedSymlinkTo "knowledge/secrets/accounts";
+
+    sane.persist.sys.plaintext = mkIf cfg.enable [
+      # intentionally allow other users to write to the guest folder
+      { directory = "/home/guest"; user = "guest"; group = "users"; mode = "0775"; }
     ];
-    users.users.guest = mkIf cfg.guest.enable {
+    users.users.guest = mkIf cfg.enable {
       isNormalUser = true;
       home = "/home/guest";
-      uid = config.sane.allocations.guest-uid;
       subUidRanges = [
         { startUid=200000; count=1; }
       ];
@@ -110,13 +125,6 @@ in
       ];
     };
 
-    users.users.dhcpcd = mkIf hasDHCP {
-      uid = config.sane.allocations.dhcpcd-uid;
-    };
-    users.groups.dhcpcd = mkIf hasDHCP {
-      gid = config.sane.allocations.dhcpcd-gid;
-    };
-
     security.sudo = {
       enable = true;
       wheelNeedsPassword = false;
@@ -124,34 +132,8 @@ in
 
     services.openssh = {
       enable = true;
-      permitRootLogin = "no";
-      passwordAuthentication = false;
+      settings.PermitRootLogin = "no";
+      settings.PasswordAuthentication = false;
     };
-
-    # affix some UIDs which were historically auto-generated
-    users.users.sshd.uid = config.sane.allocations.sshd-uid;
-    users.groups.polkituser.gid = config.sane.allocations.polkituser-gid;
-    users.groups.sshd.gid = config.sane.allocations.sshd-gid;
-    users.groups.systemd-coredump.gid = config.sane.allocations.systemd-coredump-gid;
-    users.users.nscd.uid = config.sane.allocations.nscd-uid;
-    users.groups.nscd.gid = config.sane.allocations.nscd-gid;
-    users.users.systemd-oom.uid = config.sane.allocations.systemd-oom-uid;
-    users.groups.systemd-oom.gid = config.sane.allocations.systemd-oom-gid;
-
-    # guarantee determinism in uid/gid generation for users:
-    assertions = let
-      uidAssertions = builtins.attrValues (builtins.mapAttrs (name: user: {
-        assertion = user.uid != null;
-        message = "non-deterministic uid detected for: ${name}";
-      }) config.users.users);
-      gidAssertions = builtins.attrValues (builtins.mapAttrs (name: group: {
-        assertion = group.gid != null;
-        message = "non-deterministic gid detected for: ${name}";
-      }) config.users.groups);
-      autoSubAssertions = builtins.attrValues (builtins.mapAttrs (name: user: {
-        assertion = !user.autoSubUidGidRange;
-        message = "non-deterministic subUids/Guids detected for: ${name}";
-      }) config.users.users);
-    in uidAssertions ++ gidAssertions ++ autoSubAssertions;
   };
 }

hosts/common/vpn.nix

@@ -11,7 +11,7 @@ let
   def-ovpn = name: { endpoint, publicKey, address }: {
     networking.wg-quick.interfaces."ovpnd-${name}" = {
       inherit address;
-      privateKeyFile = config.sops.secrets."wg_ovpnd_${name}_privkey".path;
+      privateKeyFile = config.sops.secrets."wg/ovpnd_${name}_privkey".path;
       dns = [
         "46.227.67.134"
         "192.165.9.158"

hosts/instantiate.nix

@@ -1,10 +1,18 @@
 # trampoline from flake.nix into the specific host definition, while doing a tiny bit of common setup
 
-hostName: { ... }: {
+# args from flake-level `import`
+{ hostName, localSystem }:
+
+# module args
+{ lib, ... }:
+
+{
   imports = [
-    ./${hostName}
+    ./by-name/${hostName}
     ./common
+    ./modules
   ];
 
   networking.hostName = hostName;
+  nixpkgs.buildPlatform = lib.mkIf (localSystem != null) localSystem;
 }

hosts/moby/kernel.nix

@@ -1,143 +0,0 @@
-{ lib, pkgs, ... }:
-let
-  # use the last commit on the 5.18 branch (5.18.14)
-  # manjaro's changes between kernel patch versions tend to be minimal if any.
-  manjaroBase = "https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/raw/25bd828cd47b1c6e09fcbcf394a649b89d2876dd";
-  manjaroPatch = name: sha256: {
-    inherit name;
-    patch = pkgs.fetchpatch {
-      inherit name;
-      url = "${manjaroBase}/${name}?inline=false";
-      inherit sha256;
-    };
-  };
-
-  # the idea for patching off Manjaro's kernel comes from jakewaksbaum:
-  # - https://git.sr.ht/~jakewaksbaum/pi/tree/af20aae5653545d6e67a459b59ee3e1ca8a680b0/item/kernel/default.nix
-  # - he later abandoned this, i think because he's using the Pinephone Pro which received mainline support.
-  manjaroPatches = [
-    (manjaroPatch
-      "1001-arm64-dts-allwinner-add-hdmi-sound-to-pine-devices.patch"
-      "sha256-DApd791A+AxB28Ven/MVAyuyVphdo8KQDx8O7oxVPnc="
-    )
-    # these patches below are critical to enable wifi (RTL8723CS)
-    # - the alternative is a wholly forked kernel by megi/megous:
-    #   - https://xnux.eu/howtos/build-pinephone-kernel.html#toc-how-to-build-megi-s-pinehpone-kernel
-    # - i don't know if these patches are based on megi's or original
-    (manjaroPatch
-      "2001-Bluetooth-Add-new-quirk-for-broken-local-ext-features.patch"
-      "sha256-CExhJuUWivegxPdnzKINEsKrMFx/m/1kOZFmlZ2SEOc="
-    )
-    (manjaroPatch
-      "2002-Bluetooth-btrtl-add-support-for-the-RTL8723CS.patch"
-      "sha256-dDdvOphTcP/Aog93HyH+L9m55laTgtjndPSE4/rnzUA="
-    )
-    (manjaroPatch
-      "2004-arm64-dts-allwinner-enable-bluetooth-pinetab-pinepho.patch"
-      "sha256-o43P3WzXyHK1PF+Kdter4asuyGAEKO6wf5ixcco2kCQ="
-    )
-    # XXX: this one has a Makefile, which hardcodes /sbin/depmod:
-    # - drivers/staging/rtl8723cs/Makefile
-    # - not sure if this is problematic?
-    (manjaroPatch
-      "2005-staging-add-rtl8723cs-driver.patch"
-      "sha256-6ywm3dQQ5JYl60CLKarxlSUukwi4QzqctCj3tVgzFbo="
-    )
-  ];
-
-  # pinephone uses the linux dtb at arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
-  # - this includes sun50i-a64.dtsi
-  # - and sun50i-a64-cpu-opp.dtsi
-  # - no need to touch the allwinner-h6 stuff: that's the SBC pine product
-  # - i think it's safe to ignore sun9i stuff, but i don't know what it is
-  kernelConfig = with lib.kernel; {
-    # NB: nix adds the CONFIG_ prefix to each of these.
-    # if you add the prefix yourself nix will IGNORE YOUR CONFIG.
-    RTL8723CS = module;
-    BT_HCIUART_3WIRE = yes;
-    BT_HCIUART_RTL = yes;
-    RTL8XXXU_UNTESTED = yes;
-    BT_BNEP_MC_FILTER = yes;
-    BT_BNEP_PROTO_FILTER = yes;
-    BT_HS = yes;
-    BT_LE = yes;
-    # relevant configs inherited from nixos defaults (or above additions):
-    # CONFIG_BT=m
-    # CONFIG_BT_BREDR=y
-    # CONFIG_BT_RFCOMM=m
-    # CONFIG_BT_RFCOMM_TTY=y
-    # CONFIG_BT_BNEP=m
-    # CONFIG_BT_HIDP=m
-    # CONFIG_BT_RTL=m
-    # CONFIG_BT_HCIBTUSB=m
-    # CONFIG_BT_HCIBTUSB_BCM=y
-    # CONFIG_BT_HCIBTUSB_RTL=y
-    # CONFIG_BT_HCIUART=m
-    # CONFIG_BT_HCIUART_SERDEV=y
-    # CONFIG_BT_HCIUART_H4=y
-    # CONFIG_BT_HCIUART_LL=y
-    # CONFIG_RTL_CARDS=m
-    # CONFIG_RTLWIFI=m
-    # CONFIG_RTLWIFI_PCI=m
-    # CONFIG_RTLWIFI_USB=m
-    # CONFIG_RTLWIFI_DEBUG=y
-    # CONFIG_RTL8723_COMMON=m
-    # CONFIG_RTLBTCOEXIST=m
-    # CONFIG_RTL8XXXU=m
-    # CONFIG_RTLLIB=m
-    # consider adding (from mobile-nixos):
-    # maybe: CONFIG_BT_HCIUART_3WIRE=y
-    # maybe: CONFIG_BT_HCIUART_RTL=y
-    # maybe: CONFIG_RTL8XXXU_UNTESTED=y
-    # consider adding (from manjaro):
-    # CONFIG_BT_6LOWPAN=m  (not listed as option in nixos kernel)
-    # these are referenced in the rtl8723 source, but not known to config (and not in mobile-nixos config
-    # maybe: CONFIG_RTL_ODM_WLAN_DRIVER
-    # maybe: CONFIG_RTL_TRIBAND_SUPPORT
-    # maybe: CONFIG_SDIO_HCI
-    # maybe: CONFIG_USB_HCI
-  };
-
-  # create a kernelPatch which overrides nixos' defconfig with extra options
-  patchDefconfig = config: {
-    # defconfig options. this method comes from here:
-    # - https://discourse.nixos.org/t/the-correct-way-to-override-the-latest-kernel-config/533/9
-    name = "sane-moby-defconfig";
-    patch = null;
-    extraStructuredConfig = config;
-  };
-in
-{
-  # use Megi's kernel:
-  # even with the Manjaro patches, stock 5.18 has a few issues on Pinephone:
-  # - no battery charging
-  # - phone rotation sensor is off by 90 degrees
-  # - ambient light sensor causes screen brightness to be shakey
-  # - phosh greeter may not appear after wake from sleep
-  boot.kernelPackages = pkgs.cross.linuxPackagesFor pkgs.cross.linux-megous;
-
-  boot.kernelPatches = [
-    (patchDefconfig (kernelConfig //
-      (with lib.kernel; {
-        # disabling the sun5i_eink driver avoids this compilation error:
-        # CC [M]  drivers/video/fbdev/sun5i-eink-neon.o
-        # aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfloat-abi=softfp'
-        # aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfpu=neon'
-        # make[3]: *** [../scripts/Makefile.build:289: drivers/video/fbdev/sun5i-eink-neon.o] Error 1
-        FB_SUN5I_EINK = no;
-      })
-    ))
-  ];
-
-  # alternatively, use nixos' kernel and add the stuff we want:
-  # # cross-compilation optimization:
-  # boot.kernelPackages =
-  #   let p = (import nixpkgs { localSystem = "x86_64-linux"; });
-  #   in p.pkgsCross.aarch64-multiplatform.linuxPackages_5_18;
-  # # non-cross:
-  # # boot.kernelPackages = pkgs.linuxPackages_5_18;
-
-  # boot.kernelPatches = manjaroPatches ++ [
-  #   (patchDefconfig kernelConfig)
-  # ];
-}

hosts/modules/default.nix

@@ -0,0 +1,16 @@
+{ ... }:
+
+{
+  imports = [
+    ./derived-secrets.nix
+    ./gui
+    ./hardware
+    ./hostnames.nix
+    ./hosts.nix
+    ./nixcache.nix
+    ./roles
+    ./services
+    ./wg-home.nix
+    ./yggdrasil.nix
+  ];
+}