feat(zeus): add RetroArch

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0

.pi/prompts/review.md

@@ -17,15 +17,6 @@ If the target includes multiple matching file types, use all matching skills.
 If the target is a diff, choose skills from the changed files.
 Do not use a style skill when no reviewed file matches it.
 
-For every reviewed `*.nix` file, run:
-
-```bash
-bazel run //src/natu:natu -- <reviewed-nix-paths>
-```
-
-Pass every reviewed Nix path to Natu.
-Report every Natu diagnostic as an actionable finding.
-
 Report only actionable findings.
 Order findings by severity.
 Do not report preferences unless a loaded rule states them.
@@ -45,7 +36,6 @@ Keep the code excerpt to one to three lines when possible.
 Use a longer excerpt only when the violation needs surrounding context.
 Use `...` to omit unrelated lines from a multi-line excerpt.
 Use a style-skill rule citation in the form `skill::rule-file:line`.
-Cite Natu diagnostics as `natu::<rule-id>`.
 Make the fix direct.
 Do not include alternatives when one fix best follows the cited rule.
 

.pi/prompts/tldr.md

@@ -0,0 +1,8 @@
+---
+description: Summarize an agent response
+argument-hint: "[source request]"
+---
+
+Summarize `${ARGUMENTS:-the preceding agent response}`.
+Keep the summary compact.
+Use no fixed format.

.pi/skills/agent-writing-guide

@@ -0,0 +1 @@
+../../src/skills/agent-writing-guide

.pi/skills/conventional-commits

@@ -0,0 +1 @@
+../../src/skills/conventional-commits

.pi/skills/craft-skill

@@ -1 +0,0 @@
-../../src/skills/craft-skill

.pi/skills/retrospect

@@ -0,0 +1 @@
+../../src/skills/retrospect

.pi/skills/to-document

@@ -1 +0,0 @@
-../../src/skills/to-document

AGENTS.md

@@ -3,7 +3,6 @@
 ## Commit convention
 
 - Use Conventional Commits for all commit messages.
-  Before writing a commit message, read `docs/conventional-commits.md`.
 - Keep commit messages about the Git history, not the forge workflow.
   Include external references only when they are stable context for the change.
 - When writing commit messages, NEVER auto-add your agent name as co-author.
@@ -49,6 +48,8 @@
 - NEVER ask the user a question using the `AskUserQuestion` tool.
   Ask in plain prose, in your own message, instead, with no exceptions.
   This overrides any default instruction to use it.
+- For review requests, inspect the requested material and report findings.
+  Edit files after the operator accepts a proposed change.
 - Never manually modify `CHANGELOG.md` files or files marked as auto-generated.
   Detect auto-generated files with a layered check.
   Trust an explicit in-file marker first, for example `AUTO-GENERATED, DO NOT EDIT`.
@@ -68,20 +69,6 @@
   after applying an accepted change.
   If the workflow is paused, say that plainly instead of using a dangling transition like "continuing" or "next".
 
-## Corrections
-
-- When you discover that your belief about a project fact or convention was wrong, record the correction.
-  Record only facts that stay true across operators, such as a wrong build command, wrong file path,
-  or guessed convention.
-  Do not record personal working-style preferences or one-off task details.
-- Record the correction in the nearest project `AGENTS.md`.
-  Use a dedicated `## Gotchas` section.
-  Create that section when the file lacks one.
-- If no project `AGENTS.md` exists, ask before creating one.
-  Append the correction immediately without asking when a project `AGENTS.md` exists.
-  Briefly mention the edit in your response.
-  If an existing entry is wrong or stale, correct or remove it the same way.
-
 ## Gotchas
 
 - When materializing an external specification, standard, or project-maintained convention, use the
@@ -101,13 +88,12 @@
 - Ariadne Rust tests are declared in Bazel `BUILD` files; do not add `[[test]]` entries to
   `src/ariadne/Cargo.toml` unless explicitly requested.
 - In this monorepo, "dotfiles" refers to the dotfiles/NixOS configuration under `src/dotfiles/` and `configs/nixos/`.
-- The flake does not currently define `formatter.x86_64-linux`.
-  Do not use `nix fmt` as a validation command until a formatter is added.
 - The `fix` app passes its current directory to Deadnix.
   Run `nix run .#fix` from the repository root so path exclusions match.
-- During the Nix refactor, address each issue that comes up by adding either a Natu rule or a new Nix style rule.
 - Git pathspec searches started in a subdirectory default to that subtree.
   Use `git -C <repository-root>` or top-anchored pathspecs for repository-wide history searches.
+- A `**/*.nix` Git pathspec does not include Nix files directly in its starting directory.
+  Include both `*.nix` and `**/*.nix`, or use a recursive `*.nix` pathspec, when linting every Nix file.
 - Ariadne extraction must preserve the game-root season prefix for archived source.
   Different game installs can contain compiled scripts with the same internal path.
 - Clew owns Ren'Py extraction, preparation, and compiled-script AST export. Ariadne owns analysis over Clew-produced data.
@@ -118,7 +104,13 @@
 - OMP does not discover project skills from `.pi/skills`.
   Put skills shared by Pi and OMP under `.agents/skills`, or configure OMP's `skills.customDirectories`.
 - Pi is vendored under `third_party/pi` as a linear vendor import.
+  `pkgs.alexion.pi-coding-agent` packages that source and does not use Nixpkgs Pi.
   Do not use `git subtree add` or `git subtree pull` for Pi PR branches.
   Gitea rebases the synthetic upstream root commit without the `third_party/pi` prefix.
   Preserve `git-subtree-dir` and `git-subtree-split` trailers on Pi vendor commits.
 - The default Pi model for NixOS user configuration is set in `configs/nixos/modules/shell/pi/default.nix`, not in vendored Pi source.
+- The `monorepo` and `status` libraries do not have `README.md` files.
+- Check root and `src/skills/.pi/skills/` for enabled symlinks before removing a monorepo skill.
+- Ariadne Rust source files live directly under `src/ariadne/`. The binary entry point is `ariadne_main.rs.
+- Bazel build-style rules live under `src/skills/style/build/rules/`, not `src/skills/style/rules/`.
+- Bazel passes arguments after `--` to the executed binary verbatim. A scaffold can define `//path` as a destination-path syntax.

Cargo.lock

@@ -2,15 +2,6 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "aho-corasick"
-version = "1.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c982642fa9e8606056828ee9a8505737230110bb1099153c79efe865c59d12ba"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "anstream"
 version = "1.0.0"
@@ -71,12 +62,6 @@ dependencies = [
  "serde_json",
 ]
 
-[[package]]
-name = "autocfg"
-version = "1.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
-
 [[package]]
 name = "clap"
 version = "4.6.7"
@@ -108,7 +93,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.6",
+ "syn",
 ]
 
 [[package]]
@@ -123,41 +108,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
 
-[[package]]
-name = "countme"
-version = "3.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7704b5fdd17b18ae31c4c1da5a2e0305a2bf17b5249300a9ee9ed7b72114c636"
-
-[[package]]
-name = "googletest"
-version = "0.14.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6b5e2f2b556b7b90297a5a35c8267dd43a537923d2b329beefdba2b4ec19d94"
-dependencies = [
- "googletest_macro",
- "num-traits",
- "regex",
- "rustversion",
-]
-
-[[package]]
-name = "googletest_macro"
-version = "0.14.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ae6abc96141edd26bf5aeec0f119c129c44de3ced09e5073711a02cb74725d0"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
-[[package]]
-name = "hashbrown"
-version = "0.14.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
-
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -190,27 +140,6 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 name = "monorepo"
 version = "0.1.0"
 
-[[package]]
-name = "natu"
-version = "0.1.0"
-dependencies = [
- "clap",
- "googletest",
- "monorepo",
- "rnix",
- "rowan",
- "status",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "once_cell_polyfill"
 version = "1.70.2"
@@ -235,68 +164,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "regex"
-version = "1.13.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f020237b6c8eed93db2e2cb53c00c60a8e1bc73da7d073199a1180401450218d"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-automata",
- "regex-syntax",
-]
-
-[[package]]
-name = "regex-automata"
-version = "0.4.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad8553b9b26413251cbf30e620595c7a41b3887f03da04579c0e6b0d6a06b4b2"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-syntax",
-]
-
-[[package]]
-name = "regex-syntax"
-version = "0.8.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
-
-[[package]]
-name = "rnix"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c163bd17372eecdf10d351c34584b7de7c1a33be4e92a32f3fb3f5a7fe3f579b"
-dependencies = [
- "rowan",
-]
-
-[[package]]
-name = "rowan"
-version = "0.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "417a3a9f582e349834051b8a10c8d71ca88da4211e4093528e36b9845f6b5f21"
-dependencies = [
- "countme",
- "hashbrown",
- "rustc-hash",
- "text-size",
-]
-
-[[package]]
-name = "rustc-hash"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
-
-[[package]]
-name = "rustversion"
-version = "1.0.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
-
 [[package]]
 name = "serde"
 version = "1.0.229"
@@ -324,7 +191,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.6",
+ "syn",
 ]
 
 [[package]]
@@ -350,17 +217,6 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
-[[package]]
-name = "syn"
-version = "2.0.119"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "3.0.6"
@@ -372,12 +228,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "text-size"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f18aa187839b2bdb1ad2fa35ead8c4c2976b64e4363c386d45ac0f7ee85c9233"
-
 [[package]]
 name = "unicode-ident"
 version = "1.0.26"

Cargo.toml

@@ -4,16 +4,12 @@ members = [
     "src/machoke",
     "src/monorepo",
     "src/status",
-    "src/natu",
 ]
 resolver = "3"
 
 [workspace.dependencies]
 clap = "4"
-googletest = "0.14"
 monorepo = { path = "src/monorepo" }
-rnix = "=0.14.0"
-rowan = "0.16"
 serde = "1.0"
 serde_json = "1.0"
 status = { path = "src/status" }

configs/nixos/AGENTS.md

@@ -1,63 +0,0 @@
-# NixOS configuration instructions
-
-## Desktop
-
-- TODO: Verify this path after the NixOS configuration is migrated.
-  When adding a graphical application, add a `window-rewrite` icon mapping in `modules/desktop/session/waybar.nix`.
-  The workspace indicator uses this mapping to show an application icon instead of the generic default glyph.
-  Match the mapping on the window class.
-  Run `hyprctl clients -j | jq -r '.[].class' | sort -u` to list classes in the running session.
-- TODO: Verify this path after the NixOS configuration is migrated.
-  Set Hyprland session environment variables in `modules/desktop/session/hyprland/default.nix` with `env = KEY,VALUE`.
-  `home.sessionVariables` do **not** reach the Hyprland session because UWSM does not source `hm-session-vars.sh`.
-  Source cursor values from `config.stylix.cursor`.
-  Set `XCURSOR_*` and `HYPRCURSOR_*` to the same theme for Bibata.
-
-## Firefox
-
-- Manage Firefox search engines through `programs.firefox.search` with `force = true`.
-  Hide built-in engines with `<engine>.metaData.hidden = true` because omission does not remove them.
-  Use current engine ids, such as `default = "ddg"` instead of `"DuckDuckGo"`.
-  Decode the built `search.json.mozlz4` with `mozlz4a -d <search.json.mozlz4>` to check the result.
-- Avoid Home Manager Firefox extension settings unless the whole profile can use the legacy extension-storage backend.
-  Any non-empty `profiles.<name>.extensions.settings.<id>.settings` sets `extensions.webextensions.ExtensionStorageIDB.enabled = false` for the whole profile.
-
-## Neovim
-
-- Nixvim's flake input follows the root nixpkgs source, but its Home Manager module does not reuse the host's `pkgs` instance.
-  Keep `programs.nixvim.nixpkgs.useGlobalPackages = true`.
-  That setting makes Nixvim use the shared package set without warning that its source default changed.
-
-## AI tooling
-
-- Use produced literals for Herdr key names that include shifted punctuation.
-  For example, use `prefix+<` instead of `prefix+shift+comma`.
-- Put monorepo Pi extension sources in `.pi/extensions/`.
-  Pi discovers them from subdirectories through the local ancestor-resource patch.
-- Treat Home Manager-managed Pi settings as generated output.
-  Do not edit them except for throwaway development or local experiments.
-  Promote finished settings into the NixOS configuration before treating them as deployed.
-
-## Gotchas
-
-- `configs/nixos/registry/stable-uid.nix` receives library functions through `lib`.
-  Qualify its library calls with `lib.`.
-- Guest modules are host-agnostic wiring, while host files own deployment-specific service configuration such as served volumes and host paths.
-  For example, `guests/copyparty.nix` should expose options and translate them into guest mounts/service settings, while `hosts/pikachu/default.nix` chooses `/inbox`, `/media`, and their backing paths.
-  Guest addresses and routes are host-level configuration because a guest module can be used on multiple hosts.
-- `sops.secrets.<name>.owner` must name a user known on the decrypting host.
-  Do not set the owner to a guest-only service user unless the host also declares that user.
-  Use a host-visible owner plus a shared group mode when the guest service can read the decrypted secret file through its group.
-- A read-only guest bind mount cannot contain nested writable bind mounts unless their mount-point
-  directories already exist inside the read-only source.
-  For aggregate Copyparty volumes such as `/srv` with nested `/srv/inbox`, keep the guest bind mount
-  writable and enforce read-only behavior through Copyparty access plus service `ReadWritePaths`.
-- `deploy-to` builds from the source checkout and activates an imported closure on the target.
-  Do not rely on a target-local monorepo checkout for remote deployment.
-- On Pikachu, `nix copy --to ssh://pikachu` accepted a small `nix store add-file` probe,
-  but rejected locally built system paths that lacked trusted signatures.
-  Use a sudo `nix-store --import` path for unsigned deploy closures.
-- Public DNS entries are not managed through the NixOS configuration.
-  Do not describe NixOS route choices as public-DNS management.
-- Do not hand-author `hardware-configuration.nix` for a host that has not been generated on that machine.
-  Generate it on the target system or live ISO, then stage it before evaluating the flake.

configs/nixos/guests/actualbudget.nix

@@ -1,51 +0,0 @@
-{
-  config,
-  lib,
-  ...
-}:
-let
-  cfg = config.guests.actualbudget; # NOLINT(let_order)
-  dataDir = "/data";
-in
-{
-  options.guests.actualbudget = {
-    dataPath = lib.mkOption {
-      type = lib.types.nullOr lib.types.str;
-      default = null;
-      example = "/srv/actualbudget";
-      description = "Host path bind-mounted as Actual Budget's data directory.";
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    assertions = [
-      {
-        assertion = cfg.dataPath != null;
-        message = "guests.actualbudget.dataPath must point at the host directory that stores Actual Budget data.";
-      }
-    ];
-
-    registry.homepage.${config.networking.hostName}.actualbudget = {
-      tab = "Apps";
-      section = "Other";
-      name = "Actual Budget";
-      description = "Finance";
-      icon = "actual-budget.png";
-    };
-
-    guests.actualbudget = {
-      interior = {
-        modules.services.actualbudget = {
-          enable = true;
-          inherit dataDir;
-        };
-      };
-      mounts.${dataDir}.directory = cfg.dataPath;
-      limits = {
-        memory = lib.mkDefault "2G";
-        cpu = lib.mkDefault "200%";
-        tasksMax = lib.mkDefault 512;
-      };
-    };
-  };
-}

configs/nixos/guests/copyparty.nix

@@ -4,58 +4,14 @@
   ...
 }:
 let
-  cfg = config.guests.copyparty; # NOLINT(let_order)
+  cfg = config.guests.copyparty;
-
-  volumeType = lib.types.submodule {
-    options = {
-      hostPath = lib.mkOption {
-        type = lib.types.str;
-        description = "Host path bind-mounted into the Copyparty guest for this volume.";
-      };
-
-      path = lib.mkOption {
-        type = lib.types.str;
-        description = "Guest path served by this Copyparty volume.";
-      };
-
-      access = lib.mkOption {
-        type = lib.types.attrsOf (lib.types.listOf lib.types.str);
-        default = { };
-        description = "Copyparty access map from permission string to account names.";
-      };
-
-      readOnly = lib.mkOption {
-        type = lib.types.bool;
-        default = false;
-        description = "Serve this Copyparty volume read-only.";
-      };
-
-      flags = lib.mkOption {
-        type = lib.types.listOf lib.types.str;
-        default = [ ];
-        description = "Copyparty volume flags.";
-      };
-    };
-  };
 in
 {
   options.guests.copyparty = {
-    accountName = lib.mkOption {
-      type = lib.types.str;
-      default = "alexion";
-      description = "Copyparty account name configured for password authentication.";
-    };
-
     passwordSecret = lib.mkOption {
       type = lib.types.str;
-      default = "services/copyparty/users/alexion/password";
+      default = "services/copyparty/users/${config.user.name}/password";
-      description = "SOPS secret name containing the Copyparty account password.";
+      description = "SOPS secret name that contains the Copyparty account password.";
-    };
-
-    stateDir = lib.mkOption {
-      type = lib.types.str;
-      default = "/var/lib/copyparty";
-      description = "Guest path where Copyparty stores service state.";
     };
 
     statePath = lib.mkOption {
@@ -72,7 +28,39 @@ in
     };
 
     volumes = lib.mkOption {
-      type = lib.types.attrsOf volumeType;
+      type = lib.types.attrsOf (
+        lib.types.submodule {
+          options = {
+            hostPath = lib.mkOption {
+              type = lib.types.str;
+              description = "Host path bind-mounted into the Copyparty guest for this volume.";
+            };
+
+            path = lib.mkOption {
+              type = lib.types.str;
+              description = "Guest path served by this Copyparty volume.";
+            };
+
+            access = lib.mkOption {
+              type = lib.types.attrsOf (lib.types.listOf lib.types.str);
+              default = { };
+              description = "Copyparty access map from permission string to account names.";
+            };
+
+            readOnly = lib.mkOption {
+              type = lib.types.bool;
+              default = false;
+              description = "Serve this Copyparty volume read-only.";
+            };
+
+            flags = lib.mkOption {
+              type = lib.types.attrs;
+              default = { };
+              description = "Copyparty volume flags.";
+            };
+          };
+        }
+      );
       default = { };
       description = "Copyparty volumes keyed by their URL path.";
     };
@@ -102,24 +90,26 @@ in
     guests.copyparty = {
       interior.modules.services.copyparty = {
         enable = true;
-        inherit (cfg) accountName stateDir;
         passwordFile = "/run/secrets/${cfg.passwordSecret}";
         reverseProxy = {
           enable = cfg.reverseProxy.enable;
           inherit (cfg.reverseProxy) trustedSources;
         };
-        volumes = lib.mapAttrs (_urlPath: volume: {
+        volumes = lib.mapAttrs (
-          inherit (volume)
+          _urlPath: volume:
-            path
+          {
-            access
+            inherit (volume)
-            flags
+              path
-            readOnly
+              readOnly
-            ;
+              ;
-        }) cfg.volumes;
+          }
+          // lib.optionalAttrs (volume.access != { }) { inherit (volume) access; }
+          // lib.optionalAttrs (volume.flags != { }) { inherit (volume) flags; }
+        ) cfg.volumes;
       };
 
       mounts = {
-        ${cfg.stateDir} = {
+        "/var/lib/copyparty" = {
           directory = cfg.statePath;
           owner = config.registry."stable-uid".${config.networking.hostName}.copyparty;
           group = "storage";

configs/nixos/guests/homepage.nix

@@ -4,7 +4,7 @@
   ...
 }:
 let
-  cfg = config.guests.homepage; # NOLINT(let_order)
+  cfg = config.guests.homepage;
   environmentFile = "/run/secrets/homepage.env";
 in
 {

configs/nixos/guests/palworld.nix

@@ -4,7 +4,7 @@
   ...
 }:
 let
-  cfg = config.guests.palworld; # NOLINT(let_order)
+  cfg = config.guests.palworld;
   steamDir = "/data/steamcmd";
   installDir = "/data/server";
   stateDir = "/data/state";

configs/nixos/guests/reverse-proxy.nix

@@ -13,11 +13,6 @@ in
         modules.services.reverse-proxy.enable = true;
 
         services.nginx.virtualHosts = {
-          "games.alexion.dev" = {
-            forceSSL = true;
-            enableACME = true;
-            locations."/".proxyPass = "http://10.23.20.32";
-          };
           "git.alexion.dev" = {
             forceSSL = true;
             enableACME = true;

configs/nixos/guests/romm.nix

@@ -0,0 +1,181 @@
+{
+  config,
+  lib,
+  ...
+}:
+let
+  cfg = config.guests.romm;
+  rommUid = config.registry."stable-uid".${config.networking.hostName}.romm;
+  redisUid = config.registry."stable-uid".${config.networking.hostName}."redis-romm";
+in
+{
+  options.guests.romm = {
+    dataPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/romm";
+      description = "Host path mounted as RomM application data.";
+    };
+
+    postgresqlPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/romm/postgresql";
+      description = "Host path mounted as RomM's PostgreSQL data.";
+    };
+
+    redisPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/romm/redis";
+      description = "Host path mounted as RomM's Redis data.";
+    };
+
+    romsPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/roms";
+      description = "Host path mounted as RomM's ROM library.";
+    };
+
+    biosPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/bios";
+      description = "Host path mounted as RomM's BIOS library.";
+    };
+
+    usersPath = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+      example = "/srv/romm/users";
+      description = "Host path mounted as RomM's user assets.";
+    };
+
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions =
+      map
+        (path: {
+          assertion = path.value != null;
+          message = "guests.romm.${path.name} must point at the host directory that stores ${path.description}.";
+        })
+        [
+          {
+            name = "dataPath";
+            value = cfg.dataPath;
+            description = "RomM application data";
+          }
+          {
+            name = "postgresqlPath";
+            value = cfg.postgresqlPath;
+            description = "RomM PostgreSQL data";
+          }
+          {
+            name = "redisPath";
+            value = cfg.redisPath;
+            description = "RomM Redis data";
+          }
+          {
+            name = "romsPath";
+            value = cfg.romsPath;
+            description = "RomM's ROM library";
+          }
+          {
+            name = "biosPath";
+            value = cfg.biosPath;
+            description = "RomM's BIOS library";
+          }
+          {
+            name = "usersPath";
+            value = cfg.usersPath;
+            description = "RomM's user assets";
+          }
+        ];
+
+    guests.romm = {
+      interior = {
+        modules.services.romm.enable = true;
+        services.romm.nginx.virtualHost = cfg.reverseProxy.route.domain;
+      };
+
+      mounts = {
+        "/var/lib/romm" = {
+          directory = cfg.dataPath;
+          owner = rommUid;
+          group = "storage";
+          mode = "2770";
+        };
+        "/var/lib/postgresql" = {
+          directory = cfg.postgresqlPath;
+          owner = config.ids.uids.postgres;
+          group = "storage";
+          mode = "0700";
+        };
+        "/var/lib/redis-romm" = {
+          directory = cfg.redisPath;
+          owner = redisUid;
+          group = "storage";
+          mode = "0700";
+        };
+        "/var/lib/romm/library/roms" = {
+          directory = cfg.romsPath;
+          owner = rommUid;
+          group = "storage";
+          mode = "2770";
+        };
+        "/var/lib/romm/library/bios" = {
+          directory = cfg.biosPath;
+          owner = rommUid;
+          group = "storage";
+          mode = "2770";
+        };
+        "/var/lib/romm/assets/users" = {
+          directory = cfg.usersPath;
+          owner = rommUid;
+          group = "storage";
+          mode = "2770";
+        };
+        "/run/secrets/romm.env" = {
+          file = config.sops.templates."romm.env".path;
+          readOnly = true;
+        };
+      };
+
+      limits = {
+        memory = lib.mkDefault "4G";
+        cpu = lib.mkDefault "200%";
+        tasksMax = lib.mkDefault 512;
+      };
+    };
+
+    sops.secrets =
+      lib.genAttrs
+        [
+          "services/romm/igdb/client-id"
+          "services/romm/igdb/client-secret"
+          "services/romm/retroachievements/api-key"
+          "services/romm/screenscraper/user"
+          "services/romm/screenscraper/password"
+          "services/romm/steamgriddb/api-key"
+        ]
+        (_: {
+          sopsFile = ../secrets + "/${config.networking.hostName}.yaml";
+        });
+
+    sops.templates."romm.env" = {
+      owner = "root";
+      group = "storage";
+      mode = "0440";
+      content = ''
+        IGDB_CLIENT_ID=${config.sops.placeholder."services/romm/igdb/client-id"}
+        IGDB_CLIENT_SECRET=${config.sops.placeholder."services/romm/igdb/client-secret"}
+        SCREENSCRAPER_USER=${config.sops.placeholder."services/romm/screenscraper/user"}
+        SCREENSCRAPER_PASSWORD=${config.sops.placeholder."services/romm/screenscraper/password"}
+        RETROACHIEVEMENTS_API_KEY=${config.sops.placeholder."services/romm/retroachievements/api-key"}
+        STEAMGRIDDB_API_KEY=${config.sops.placeholder."services/romm/steamgriddb/api-key"}
+      '';
+    };
+  };
+}

configs/nixos/guests/valheim.nix

@@ -4,7 +4,7 @@
   ...
 }:
 let
-  cfg = config.guests.valheim; # NOLINT(let_order)
+  cfg = config.guests.valheim;
   steamDir = "/data/steamcmd";
   installDir = "/data/server";
   stateDir = "/data/state";

configs/nixos/hosts/neogaia/default.nix

@@ -1,6 +1,6 @@
 {
   inputs,
-  pkgs,
+  util,
   ...
 }:
 # neogaia — Dell XPS 13 9380 laptop.
@@ -13,10 +13,11 @@
     ./disk.nix
   ];
 
-  boot.kernelPackages = pkgs.linuxPackages_cachyos;
+  modules.host.cachyos.enable = true;
 
-  # So wifi can be joined from the console.
+  services.xserver.xkb.options = "caps:swapescape";
-  networking.networkmanager.enable = true;
+
+  modules.network.enable = true;
 
   registry.address.neogaia.self = "10.23.50.146";
 
@@ -28,15 +29,9 @@
     peer = {
       publicKey = "sGEkSD+gEdIMXi4PBN3AhwHGc4tWMtcjOIey3s7yb3I=";
       endpoint = "100.0.90.192:51820";
-      allowedIPs = [ "10.23.0.0/16" ];
     };
   };
 
-  registry.shell-shortcut.neogaia = {
-    vpn-on = "sudo systemctl start wireguard-wg-home.target";
-    vpn-off = "sudo systemctl stop 'wireguard-wg-home*.service' wireguard-wg-home.target";
-  };
-
   modules.monorepo.enable = true;
   modules.shell.herdr.enable = true;
   modules.shell.gitea-axi.enable = true;
@@ -47,4 +42,23 @@
   modules.desktop.apps.obsidian.enable = true;
   modules.desktop.apps.steam.enable = true;
 
+  registry.waybar.neogaia.battery = {
+    order = 70;
+    settings = {
+      format = "{icon} {capacity}%";
+      format-charging = "${util.glyph "f0e7"} {capacity}%";
+      format-icons = [
+        (util.glyph "f244")
+        (util.glyph "f243")
+        (util.glyph "f242")
+        (util.glyph "f241")
+        (util.glyph "f240")
+      ];
+      states = {
+        warning = 20;
+        critical = 10;
+      };
+    };
+  };
+
 }

configs/nixos/hosts/neogaia/ssh_user_ed25519_key.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGxQ4kWsBo2OGYIPOkFe0vNEcB3yoJwAu0y9wrdQzALE alexion@neogaia

configs/nixos/hosts/pikachu/default.nix

@@ -15,52 +15,15 @@
 
   hardware.cpu.intel.updateMicrocode = true;
 
-  systemd.network = {
+  modules.network.vlans = {
-    enable = true;
+    interface = "enp2s0";
-    netdevs = {
+    ids = [ 20 ];
-      "40-br-vlan20".netdevConfig = {
-        Name = "br-vlan20";
-        Kind = "bridge";
-      };
-      "40-vlan20" = {
-        netdevConfig = {
-          Name = "vlan20";
-          Kind = "vlan";
-        };
-        vlanConfig.Id = 20;
-      };
-    };
-
-    networks = {
-      "10-uplink" = {
-        matchConfig = {
-          Name = "enp2s0";
-          MACAddress = "78:55:36:07:af:49";
-        };
-        networkConfig.DHCP = "yes";
-        vlan = [ "vlan20" ];
-        linkConfig.RequiredForOnline = "routable";
-      };
-      "40-vlan20" = {
-        matchConfig.Name = "vlan20";
-        networkConfig.Bridge = "br-vlan20";
-        linkConfig.RequiredForOnline = "no";
-      };
-      "40-br-vlan20" = {
-        matchConfig.Name = "br-vlan20";
-        linkConfig.RequiredForOnline = "no";
-      };
-    };
   };
-  networking.useDHCP = false;
-
-  modules.network.vlans.ids = [ 20 ];
 
   boot.zfs.forceImportRoot = false;
 
-  modules.zfs = {
+  modules.host.zfs = {
     enable = true;
-    hostId = "2346edbd";
     pools.pikachu = { };
   };
 
@@ -73,12 +36,13 @@
     steamPath = "/pikachu/data/steamcmd";
     installPath = "/pikachu/data/servers/valheim/main";
     statePath = "/pikachu/media/games/servers/valheim/main";
-    serverName = "butter-chicken";
+    serverName = "main";
     reverseProxy = {
       enable = true;
       route = {
         domain = "valheim.alexion.dev";
-        udp.ports = [
+        protocol = "udp";
+        ports = [
           config.guests.valheim.port
           (config.guests.valheim.port + 1)
         ];
@@ -101,22 +65,8 @@
       enable = true;
       route = {
         domain = "palworld.alexion.dev";
-        udp.ports = [ config.guests.palworld.port ];
+        protocol = "udp";
-      };
+        ports = [ config.guests.palworld.port ];
-    };
-  };
-
-  guests.actualbudget = {
-    enable = true;
-    vlan = 20;
-    mac = "BC:24:11:C1:CD:28";
-    dataPath = "/pikachu/data/actualbudget";
-    address = "10.23.20.42";
-    reverseProxy = {
-      enable = true;
-      route = {
-        domain = "budget.alexion.dev";
-        port = 5006;
       };
     };
   };
@@ -132,11 +82,33 @@
       enable = true;
       route = {
         domain = "music.alexion.dev";
+        protocol = "https";
         port = 4533;
       };
     };
   };
 
+  guests.romm = {
+    enable = true;
+    vlan = 20;
+    address = "10.23.20.112";
+    dataPath = "/pikachu/data/romm";
+    postgresqlPath = "/pikachu/data/romm/postgresql";
+    redisPath = "/pikachu/data/romm/redis";
+    romsPath = "/pikachu/media/games/emulation/roms";
+    biosPath = "/pikachu/media/games/emulation/bios";
+    usersPath = "/pikachu/media/games/emulation/users";
+    reverseProxy = {
+      enable = true;
+      route = {
+        domain = "games.alexion.dev";
+        protocol = "https";
+        port = 80;
+        clientMaxBodySize = "0";
+      };
+    };
+  };
+
   guests.reverse-proxy = {
     enable = true;
     vlan = 20;
@@ -152,7 +124,8 @@
       enable = true;
       route = {
         domain = "home";
-        http.port = 8082;
+        protocol = "http";
+        port = 8082;
       };
     };
   };
@@ -167,7 +140,9 @@
       enable = true;
       route = {
         domain = "files.alexion.dev";
+        protocol = "https";
         port = 3923;
+        clientMaxBodySize = "1g";
       };
       trustedSources = [ "${registry.address.${config.networking.hostName}."reverse-proxy"}/32" ];
     };
@@ -175,35 +150,21 @@
       "/" = {
         hostPath = "/pikachu/data/copyparty/root";
         path = "/srv";
-        access.r = [ "alexion" ];
         readOnly = true;
       };
       "/inbox" = {
         hostPath = "/pikachu/__inbox";
         path = "/pikachu/__inbox";
-        access.A = [ "alexion" ];
-        flags = [
-          "d2d"
-          "d2t"
-          "dthumb"
-        ];
       };
       "/media" = {
         hostPath = "/pikachu/media";
         path = "/pikachu/media";
-        access.A = [ "alexion" ];
-        flags = [
-          "d2d"
-          "d2t"
-          "dthumb"
-        ];
       };
       "/opds" = {
         hostPath = "/pikachu/data/opds";
         path = "/pikachu/data/opds";
-        access.r = [ "alexion" ];
         readOnly = true;
-        flags = [ "opds" ];
+        flags.opds = true;
       };
     };
   };

configs/nixos/hosts/pikachu/ssh_user_ed25519_key.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINNqJIC6VRXyvrNf3n9su9KdPCikC3CjK/QrCK2reHdB alexion@pikachu

configs/nixos/hosts/zeus/default.nix

@@ -1,7 +1,6 @@
 {
   config,
   lib,
-  pkgs,
   ...
 }:
 # zeus — Ryzen desktop with AMD graphics.
@@ -15,14 +14,14 @@
 
   nixpkgs.hostPlatform = "x86_64-linux";
 
-  boot.kernelPackages = pkgs.linuxPackages_cachyos;
+  modules.host.cachyos.enable = true;
 
   hardware.graphics = {
     enable = true;
     enable32Bit = true;
   };
 
-  networking.networkmanager.enable = true;
+  modules.network.enable = true;
 
   services.logind.settings.Login = {
     HandlePowerKey = "ignore";
@@ -45,13 +44,25 @@
   modules.desktop.enable = true;
   modules.desktop.apps.obsidian.enable = true;
   modules.desktop.apps.r2modman.enable = true;
+  modules.desktop.emulation.enable = true;
   modules.desktop.apps.signal.enable = true;
   modules.desktop.apps.steam.enable = true;
   modules.desktop.apps.vencord.enable = true;
 
   home-manager.users.${config.user.name}.wayland.windowManager.hyprland.settings.monitor = [
-    "HDMI-A-1,1920x1080@120,0x0,1,transform,3"
+    {
-    "DP-3,2560x1440@239.96,1080x0,1"
+      output = "HDMI-A-1";
+      mode = "1920x1080@120";
+      position = "-1080x0";
+      scale = 1;
+      transform = 3;
+    }
+    {
+      output = "DP-3";
+      mode = "2560x1440@239.96";
+      position = "0x0";
+      scale = 1;
+    }
   ];
 
 }

configs/nixos/hosts/zeus/ssh_user_ed25519_key.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIRBcHHuubptXCdvED/p2dR3MpjGN/AimqLasLY5984G alexion@zeus

configs/nixos/modules/default.nix

@@ -1,14 +1,10 @@
 {
   config,
   lib,
-  pkgs,
   inputs,
   ...
 }:
 # The shared foundation for every host and guest.
-let
-  stateVersion = "26.05";
-in
 {
   imports = [ inputs.home-manager.nixosModules.home-manager ];
 
@@ -17,14 +13,14 @@ in
       type = lib.types.str;
       default = "alexion";
       description = ''
-        Primary interactive user for this system.
+        Names the primary user account.
-        This drives the system account and Home Manager user together.
+        Host configuration uses this name for the Home Manager user.
       '';
     };
   };
 
   config = {
-    system.stateVersion = stateVersion;
+    system.stateVersion = "26.05";
 
     nixpkgs.config.allowUnfree = true;
     nix.settings.experimental-features = [
@@ -42,66 +38,7 @@ in
 
     users.groups.storage.gid = 10000;
 
-    security.sudo.extraConfig = ''
-      Defaults env_keep += "EDITOR VISUAL"
-    '';
-
     time.timeZone = "America/New_York";
     i18n.defaultLocale = "en_GB.UTF-8";
-
-    home-manager = {
-      useGlobalPkgs = true;
-      useUserPackages = true;
-      users.${config.user.name} = {
-        home.username = config.user.name;
-        home.homeDirectory = "/home/${config.user.name}";
-        home.stateVersion = stateVersion;
-        home.packages = with pkgs; [
-          eza
-          wget
-        ];
-      };
-    };
-
-    registry.shell-shortcut.${config.networking.hostName} = {
-      ls = {
-        command = "eza -alg --color=always --group-directories-first --icons=always";
-        abbreviation = false;
-      };
-      ll = {
-        command = "eza -lg --color=always --group-directories-first --icons=always";
-        abbreviation = false;
-      };
-      lt = {
-        command = "eza -aT -I '.git' --color=always --group-directories-first --icons=always";
-        abbreviation = false;
-      };
-      ".." = "cd ..";
-      "..." = "cd ../..";
-      "...." = "cd ../../..";
-
-      cp = "cp -v";
-      tarnow = "tar -acf ";
-      untar = "tar -zxvf ";
-      wget = "wget -c ";
-      grep = "grep --color=auto";
-      fgrep = "fgrep --color=auto";
-      egrep = "egrep --color=auto";
-      jctl = "journalctl -p 3 -xb";
-
-      update = "sudo nixos-rebuild switch --flake .#${config.networking.hostName}";
-      cleanup = "sudo nix-collect-garbage -d";
-      sops-host = {
-        command = "sudo --preserve-env=EDITOR,VISUAL env SOPS_AGE_KEY_FILE=/var/lib/sops-nix/key.txt nix shell nixpkgs#sops nixpkgs#neovim -c sops";
-        abbreviation = false;
-      };
-    };
-
-    modules.shell.fish.enable = lib.mkDefault true;
-    modules.shell.fish.defaultShell = lib.mkDefault true;
-    modules.shell.tmux.enable = lib.mkDefault true;
-    modules.shell.nvim.enable = lib.mkDefault true;
-    modules.shell.git.enable = lib.mkDefault true;
-    modules.shell.yazi.enable = lib.mkDefault true;
   };
 }

configs/nixos/modules/desktop/apps/alacritty.nix

@@ -1,19 +0,0 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}:
-# Alacritty as the desktop terminal.
-let
-  cfg = config.modules.desktop.apps.alacritty; # NOLINT(let_order)
-  user = config.user.name;
-in
-{
-  options.modules.desktop.apps.alacritty.enable =
-    lib.mkEnableOption "Alacritty as the desktop terminal";
-
-  config = lib.mkIf cfg.enable {
-    home-manager.users.${user}.home.packages = [ pkgs.alacritty ];
-  };
-}

configs/nixos/modules/desktop/apps/firefox.nix

@@ -3,13 +3,12 @@
   inputs,
   lib,
   pkgs,
+  util,
   ...
 }:
-# Firefox as the desktop browser: stock mainline, hardened and de-monetized by policy.
+# Configures Firefox as the desktop browser.
 let
-  cfg = config.modules.desktop.apps.firefox; # NOLINT(let_order)
+  cfg = config.modules.desktop.apps.firefox;
-  firefoxAddons = inputs.firefox-addons.packages.${pkgs.stdenv.hostPlatform.system};
-  user = config.user.name;
 in
 {
   options.modules.desktop.apps.firefox = {
@@ -19,19 +18,25 @@ in
       type = lib.types.str;
       default = "1.0";
       description = ''
-        Firefox UI and page scale, passed to `layout.css.devPixelsPerPx`.
+        Scales Firefox UI and page content.
-        Override it on hosts that need a larger browser scale, such as small
+
-        high-DPI laptop panels.
+        Sets `layout.css.devPixelsPerPx`.
+        Use a larger value for high-DPI displays.
       '';
     };
   };
 
   config = lib.mkIf cfg.enable {
-    home-manager.users.${user} = hm: {
+    registry.window-icon.${config.networking.hostName}.firefox = {
+      class = ".*[Ff]irefox.*";
+      icon = util.glyph "f269";
+    };
+
+    home-manager.users.${config.user.name} = hm: {
       programs.firefox = {
         enable = true;
 
-        # Enterprise policies: enforced and unchangeable from the browser UI.
+        # Applies policies that users cannot change in Firefox.
         policies = {
           DisableTelemetry = true;
           DisableFirefoxStudies = true;
@@ -40,7 +45,7 @@ in
           DontCheckDefaultBrowser = true;
           DisableFirefoxAccounts = true;
 
-          # Strip the monetized surfaces from the new-tab page.
+          # Removes sponsored content from the new-tab page.
           FirefoxHome = {
             SponsoredTopSites = false;
             SponsoredPocket = false;
@@ -49,23 +54,21 @@ in
         };
 
         profiles.default = {
-          isDefault = true;
-
           extensions = {
-            packages = with firefoxAddons; [
+            packages = with inputs.firefox-addons.packages.${pkgs.stdenv.hostPlatform.system}; [
               ublock-origin
               proton-pass
               sponsorblock
             ];
 
-            # The Nord chrome theme is a declared extension setting, so home-manager
+            # Home Manager overwrites Nord theme changes made in Firefox.
-            # owns the extension-settings store, overwriting runtime changes to it.
             force = true;
           };
 
-          # Stylix's Nord mapping paints the selected address-bar result a
+          # Stylix uses a near-white selection background.
-          # near-white grey, leaving its light text unreadable. Darken that one
+          # Use the Nord selection color because its text stays readable.
-          # highlight to the Nord selection grey, from the same scheme.
+          # Home Manager writes extension settings through Firefox's legacy storage backend.
+          # Extension settings disable `ExtensionStorageIDB` for the whole profile.
           extensions.settings."FirefoxColor@mozilla.com".settings.theme.colors.popup_highlight =
             let
               c = hm.config.lib.stylix.colors;
@@ -77,32 +80,26 @@ in
             };
 
           settings = {
-            # Scale the UI and page by a fixed factor.
-            # Left at auto (-1), Firefox reads the panel's 1.5x and inflates its
-            # whole chrome while point-sized apps stay put.
-            # A shade under that brings it into line without dropping to true
-            # 1:1, which reads too small at this DPI.
             "layout.css.devPixelsPerPx" = cfg.uiScale;
 
-            # Auto-enable the sideloaded Firefox Color add-on carrying the Nord
+            # Enables Firefox Color after Firefox sideloads the add-on.
-            # chrome theme, which Firefox otherwise leaves disabled.
             "extensions.autoDisableScopes" = 0;
 
-            # Sponsored surfaces the policies above do not reach.
+            # Removes sponsored content outside Firefox policies.
             "browser.urlbar.suggest.quicksuggest.sponsored" = false;
             "browser.newtabpage.activity-stream.showSponsored" = false;
             "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
           };
 
           search = {
-            # Declaring search overwrites Firefox's own engine list wholesale,
+            # Home Manager replaces the engine list when this setting is enabled.
-            # so engines added later in the UI do not survive a rebuild.
+            # Engines added in Firefox do not survive a rebuild.
             force = true;
             default = "ddg";
 
-            # The general-purpose commercial engines, hidden to leave a lean
+            # Hides commercial search engines.
-            # DuckDuckGo-and-Wikipedia list. They stay reachable through bangs.
+            # Bangs still reach these engines.
-            # An engine carrying only metaData is treated as a builtin.
+            # Entries with only `metaData` configure Firefox built-in engines.
             engines = {
               google.metaData.hidden = true;
               bing.metaData.hidden = true;
@@ -114,8 +111,7 @@ in
         };
       };
 
-      # Nord chrome for the one profile, applied through the Stylix-managed
+      # Applies the Nord theme through Stylix's Firefox Color add-on.
-      # Firefox Color add-on that colorTheme enables.
       stylix.targets.firefox = {
         enable = true;
         profileNames = [ "default" ];
@@ -133,8 +129,8 @@ in
         };
       };
 
-      # Firefox writes profiles.ini itself on first launch, so home-manager is
+      # Firefox creates `profiles.ini` on its first launch.
-      # told to own the file rather than fail activation refusing to clobber it.
+      # Force replacement during Home Manager activation.
       home.file."${hm.config.programs.firefox.configPath}/profiles.ini".force = true;
     };
   };

configs/nixos/modules/desktop/apps/ghostty.nix

@@ -2,17 +2,30 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Ghostty as the desktop terminal.
 let
-  cfg = config.modules.desktop.apps.ghostty; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.desktop.apps.ghostty.enable = lib.mkEnableOption "Ghostty as the desktop terminal";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.ghostty.enable {
+    registry.keybind.${config.networking.hostName}.ghostty = {
+      keys = "SUPER + Return";
+      action = {
+        kind = "exec";
+        command = lib.getExe pkgs.ghostty;
+      };
+    };
+
+    registry.window-icon.${config.networking.hostName}.ghostty = {
+      class = "com.mitchellh.ghostty";
+      icon = util.glyph "f120";
+    };
+
     home-manager.users.${user}.home.packages = [ pkgs.ghostty ];
   };
 }

configs/nixos/modules/desktop/apps/obsidian.nix

@@ -2,18 +2,23 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Obsidian as the desktop note-taking vault.
 let
-  cfg = config.modules.desktop.apps.obsidian; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.desktop.apps.obsidian.enable =
     lib.mkEnableOption "Obsidian as the desktop note-taking vault";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.obsidian.enable {
     home-manager.users.${user}.home.packages = [ pkgs.obsidian ];
+
+    registry.window-icon.${config.networking.hostName}.obsidian = {
+      class = "obsidian";
+      icon = util.glyph "f02d";
+    };
   };
 }

configs/nixos/modules/desktop/apps/r2modman.nix

@@ -6,14 +6,13 @@
 }:
 # r2modman, a Thunderstore mod manager.
 let
-  cfg = config.modules.desktop.apps.r2modman; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.desktop.apps.r2modman.enable =
     lib.mkEnableOption "r2modman, a Thunderstore mod manager";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.r2modman.enable {
     home-manager.users.${user}.home.packages = [ pkgs.r2modman ];
   };
 }

configs/nixos/modules/desktop/apps/signal.nix

@@ -2,17 +2,22 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Signal desktop messenger.
 let
-  cfg = config.modules.desktop.apps.signal; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.desktop.apps.signal.enable = lib.mkEnableOption "Signal desktop messenger";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.signal.enable {
     home-manager.users.${user}.home.packages = [ pkgs.signal-desktop ];
+
+    registry.window-icon.${config.networking.hostName}.signal = {
+      class = "[Ss]ignal";
+      icon = util.glyph "f4ad";
+    };
   };
 }

configs/nixos/modules/desktop/apps/steam.nix

@@ -2,16 +2,14 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Steam game launcher and runtime integration.
-let
-  cfg = config.modules.desktop.apps.steam; # NOLINT(let_order)
-in
 {
   options.modules.desktop.apps.steam.enable = lib.mkEnableOption "Steam game launcher";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.steam.enable {
     programs.gamemode.enable = true;
 
     programs.steam = {
@@ -26,5 +24,10 @@ in
     environment.systemPackages = [
       pkgs.gamescope
     ];
+
+    registry.window-icon.${config.networking.hostName}.steam = {
+      class = "[Ss]team";
+      icon = util.glyph "f1b6";
+    };
   };
 }

configs/nixos/modules/desktop/apps/vencord.nix

@@ -2,18 +2,23 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Vesktop, a Discord client with Vencord built in.
 let
-  cfg = config.modules.desktop.apps.vencord; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.desktop.apps.vencord.enable =
     lib.mkEnableOption "Vesktop, a Discord client with Vencord built in";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.apps.vencord.enable {
     home-manager.users.${user}.home.packages = [ pkgs.vesktop ];
+
+    registry.window-icon.${config.networking.hostName}.vesktop = {
+      class = "[Vv]esktop";
+      icon = util.glyph "f1ff";
+    };
   };
 }

configs/nixos/modules/desktop/default.nix

@@ -1,14 +1,11 @@
 { config, lib, ... }:
 # The desktop aggregator: one flag brings up the whole graphical session.
-let
-  cfg = config.modules.desktop; # NOLINT(let_order)
-in
 {
   options.modules.desktop.enable = lib.mkEnableOption "the keyboard-driven Hyprland desktop";
 
   # Each piece is turned on at default priority, so a host can still override
   # any one of them while the single flag above enables the whole desktop.
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.enable {
     modules.desktop.apps.firefox.enable = lib.mkDefault true;
     modules.desktop.apps.ghostty.enable = lib.mkDefault true;
     modules.desktop.session.hyprland.enable = lib.mkDefault true;
@@ -26,5 +23,6 @@ in
     modules.desktop.utilities.screenshot.enable = lib.mkDefault true;
     modules.desktop.utilities.theming.enable = lib.mkDefault true;
     modules.desktop.utilities.userdirs.enable = lib.mkDefault true;
+    registry.env.${config.networking.hostName}.NIXOS_OZONE_WL = "1";
   };
 }

configs/nixos/modules/desktop/emulation.nix

@@ -0,0 +1,36 @@
+{
+  config,
+  lib,
+  ...
+}:
+# Shared directories for emulators.
+let
+  user = config.user.name;
+  directory = "/home/${user}/emulation";
+in
+{
+  options.modules.desktop.emulation.enable = lib.mkEnableOption "shared emulation directories";
+
+  config = lib.mkIf config.modules.desktop.emulation.enable {
+    modules.desktop.emulation.retroarch = {
+      enable = lib.mkDefault true;
+      browserDirectory = "${directory}/roms";
+    };
+
+    home-manager.users.${user} = hm: {
+      home.file = {
+        ".config/retroarch/saves".source = hm.config.lib.file.mkOutOfStoreSymlink "${directory}/saves";
+        ".config/retroarch/states".source = hm.config.lib.file.mkOutOfStoreSymlink "${directory}/states";
+        ".config/retroarch/system".source = hm.config.lib.file.mkOutOfStoreSymlink "${directory}/bios";
+      };
+
+      systemd.user.tmpfiles.rules = map (path: "d ${path} 0700 - - -") [
+        directory
+        "${directory}/bios"
+        "${directory}/roms"
+        "${directory}/saves"
+        "${directory}/states"
+      ];
+    };
+  };
+}

configs/nixos/modules/desktop/emulation/retroarch.nix

@@ -0,0 +1,62 @@
+{
+  config,
+  lib,
+  pkgs,
+  util,
+  ...
+}:
+# RetroArch with the selected PlayStation and Sega Saturn cores.
+let
+  cfg = config.modules.desktop.emulation.retroarch;
+  user = config.user.name;
+in
+{
+  options.modules.desktop.emulation.retroarch = {
+    enable = lib.mkEnableOption "RetroArch with PlayStation and Sega Saturn cores";
+
+    browserDirectory = lib.mkOption {
+      type = lib.types.str;
+      default = "";
+      description = "Directory where RetroArch starts its content browser.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home-manager.users.${user} = {
+      home.packages = [
+        (pkgs.wrapRetroArch {
+          cores = with pkgs.libretro; [
+            beetle-psx-hw
+            beetle-saturn
+          ];
+          settings = {
+            savefiles_in_content_dir = "false";
+            savestates_in_content_dir = "false";
+            system_directory = "/home/${user}/.config/retroarch/system";
+            video_fullscreen = "true";
+            sort_savefiles_enable = "true";
+            sort_savestates_enable = "true";
+            cloud_sync_enable = "true";
+            cloud_sync_driver = "webdav";
+            webdav_url = "https://games.alexion.dev/api/sync/retroarch/";
+            cloud_sync_sync_saves = "true";
+            cloud_sync_sync_configs = "true";
+            cloud_sync_sync_thumbs = "false";
+            cloud_sync_sync_system = "false";
+            cloud_sync_sync_mode = "0";
+            cloud_sync_destructive = "false";
+          }
+          // lib.optionalAttrs (cfg.browserDirectory != "") {
+            rgui_browser_directory = cfg.browserDirectory;
+          };
+        })
+      ];
+
+    };
+
+    registry.window-icon.${config.networking.hostName}.retroarch = {
+      class = "com.libretro.RetroArch";
+      icon = util.glyph "f11b";
+    };
+  };
+}

configs/nixos/modules/desktop/session/hyprland/default.nix

@@ -1,42 +1,15 @@
 {
   config,
   lib,
-  pkgs,
+  util,
   ...
 }:
 # The Hyprland compositor.
-let
-  cfg = config.modules.desktop.session.hyprland; # NOLINT(let_order)
-  cursor = config.stylix.cursor;
-
-  # Numbered-workspace switch and move for 1..9, the operator's i3 muscle memory.
-  workspaceBinds = lib.concatMap (n: [
-    "$mod, ${toString n}, workspace, ${toString n}"
-    "$mod SHIFT, ${toString n}, movetoworkspace, ${toString n}"
-  ]) (lib.range 1 9);
-
-  user = config.user.name;
-
-  # Flip the tiling strategy between the two built-in layouts, since neither a
-  # dispatcher nor a keyword toggles it on its own.
-  toggleLayout = pkgs.writeShellScript "hypr-toggle-layout" ''
-    if [ "$(hyprctl getoption -j general:layout | ${pkgs.jq}/bin/jq -r .str)" = dwindle ]; then
-      hyprctl keyword general:layout master
-    else
-      hyprctl keyword general:layout dwindle
-    fi
-  '';
-in
 {
-  options.modules.desktop.session.hyprland = {
+  options.modules.desktop.session.hyprland.enable = lib.mkEnableOption "the Hyprland compositor";
-    enable = lib.mkEnableOption "the Hyprland compositor";
 
-    blur = lib.mkEnableOption ''
+  config = lib.mkIf config.modules.desktop.session.hyprland.enable {
-      window blur. Off by default as the single biggest battery cost on a
-      laptop, left on for a host with the headroom to spend it'';
-  };
 
-  config = lib.mkIf cfg.enable {
     # This program integration owns the session, portals, and polkit, launched
     # through the universal Wayland session manager.
     programs.hyprland = {
@@ -44,7 +17,7 @@ in
       withUWSM = true;
     };
 
-    home-manager.users.${user}.wayland.windowManager.hyprland = {
+    home-manager.users.${config.user.name}.wayland.windowManager.hyprland = {
       enable = true;
 
       # One package drives the whole session, so there is never a version split.
@@ -56,135 +29,217 @@ in
       # uwsm owns the systemd graphical-session targets.
       systemd.enable = false;
 
-      # Write the native hyprlang hyprland.conf, whose variable and bind syntax
+      # Write the native Lua Hyprland config. Home Manager renders the Nix
-      # the settings below are expressed in.
+      # settings below as hl.* calls.
-      configType = "hyprlang";
+      configType = "lua";
 
       settings = {
-        "$mod" = "SUPER";
+        config = {
-        "$terminal" = "ghostty";
+          input = {
-
+            kb_layout = config.services.xserver.xkb.layout;
-        # Session variables handed to the compositor directly.
+            kb_options = config.services.xserver.xkb.options;
-        # UWSM launches the session without the shell profile that would carry
+            repeat_delay = 250;
-        # them, so a variable the compositor or its children must see is set
+            repeat_rate = 45;
-        # here rather than through home-manager's sessionVariables.
+            accel_profile = "flat";
-        env = [
+            touchpad = {
-          # Chromium and Electron apps read this to select native Wayland;
+              natural_scroll = true;
-          # nixpkgs wrappers (Obsidian's included) gate their Wayland flags on
+              tap_to_click = true;
-          # it, so without it they run under XWayland and blur at this DPI.
+              disable_while_typing = true;
-          "NIXOS_OZONE_WL,1"
+            };
-        ]
-        # Bibata ships XCursor only.
-        # The hyprcursor variables name the same theme, which Hyprland
-        # resolves through its XCursor fallback.
-        ++ lib.optionals (cursor != null) [
-          "XCURSOR_THEME,${cursor.name}"
-          "XCURSOR_SIZE,${toString cursor.size}"
-          "HYPRCURSOR_THEME,${cursor.name}"
-          "HYPRCURSOR_SIZE,${toString cursor.size}"
-        ];
-
-        input = {
-          kb_layout = "us";
-          # Caps is a second Escape.
-          # Shift+Caps still toggles a real CapsLock.
-          kb_options = "caps:escape_shifted_capslock";
-          # Snappy key repeat.
-          repeat_delay = 250;
-          repeat_rate = 45;
-          accel_profile = "flat";
-          touchpad = {
-            natural_scroll = true;
-            tap-to-click = true;
-            disable_while_typing = true;
           };
+
+          general = {
+            gaps_in = 4;
+            gaps_out = 8;
+            border_size = 2;
+            layout = "dwindle";
+          };
+
+          decoration = {
+            rounding = 6;
+            blur.enabled = false;
+          };
+
+          xwayland.force_zero_scaling = true;
+
+          dwindle.preserve_split = true;
         };
 
-        general = {
+        env = lib.mapAttrsToList (name: value: {
-          gaps_in = 4;
+          _args = [
-          gaps_out = 8;
+            name
-          border_size = 2;
+            value
-          layout = "dwindle";
-        };
-
-        decoration = {
-          rounding = 6;
-          blur.enabled = cfg.blur;
-        };
-
-        # XWayland clients render at the panel's native resolution instead of
-        # being raster-scaled by the compositor at the fractional monitor scale.
-        xwayland.force_zero_scaling = true;
-
-        animations = {
-          enabled = true;
-          bezier = [ "ease, 0.25, 0.1, 0.25, 1.0" ];
-          # Durations are in centiseconds.
-          # Short values keep the motion subtle.
-          animation = [
-            "windows, 1, 3, ease"
-            "fade, 1, 3, ease"
-            # Layer surfaces like the launcher fade in a touch quicker than windows.
-            "layersIn, 1, 2, ease"
-            "fadeLayersIn, 1, 2, ease"
-            "workspaces, 1, 3, ease"
-            "border, 1, 3, ease"
           ];
+        }) (lib.attrByPath [ config.networking.hostName ] { } config.registry.env);
+
+        bind = lib.mapAttrsToList (_name: keybind: {
+          _args = [
+            keybind.keys
+            (lib.generators.mkLuaInline (
+              {
+                exec = "hl.dsp.exec_cmd(${lib.generators.toLua { } keybind.action.command})";
+                focus = "hl.dsp.focus(${
+                  lib.generators.toLua { } { inherit (keybind.action) direction workspace; }
+                })";
+                "move-window" = "hl.dsp.window.move(${
+                  lib.generators.toLua { } { inherit (keybind.action) direction workspace; }
+                })";
+                "resize-window" = "hl.dsp.window.resize(${
+                  lib.generators.toLua { } (
+                    {
+                      down = {
+                        x = 0;
+                        y = 10;
+                        relative = true;
+                      };
+                      left = {
+                        x = -10;
+                        y = 0;
+                        relative = true;
+                      };
+                      right = {
+                        x = 10;
+                        y = 0;
+                        relative = true;
+                      };
+                      up = {
+                        x = 0;
+                        y = -10;
+                        relative = true;
+                      };
+                    }
+                    .${keybind.action.direction}
+                  )
+                })";
+                "toggle-floating" = ''hl.dsp.window.float({ action = "toggle" })'';
+                "toggle-fullscreen" = "hl.dsp.window.fullscreen()";
+                "close-window" = "hl.dsp.window.close()";
+              }
+              .${keybind.action.kind}
+            ))
+          ]
+          ++ lib.optional keybind.repeating {
+            repeating = true;
+          }
+          ++ lib.optional keybind.locked {
+            locked = true;
+          };
+        }) (lib.attrByPath [ config.networking.hostName ] { } config.registry.keybind);
+      };
+    };
+    registry.keybind.${config.networking.hostName} = lib.mkMerge [
+      # Generate numeric workspace keybinds.
+      (lib.listToAttrs (
+        lib.concatMap (workspace: [
+          {
+            name = "hyprland-workspace-${toString workspace}";
+            value = {
+              keys = "SUPER + ${toString workspace}";
+              action = {
+                kind = "focus";
+                inherit workspace;
+              };
+            };
+          }
+          {
+            name = "hyprland-move-to-workspace-${toString workspace}";
+            value = {
+              keys = "SUPER + SHIFT + ${toString workspace}";
+              action = {
+                kind = "move-window";
+                inherit workspace;
+              };
+            };
+          }
+        ]) (lib.range 1 9)
+      ))
+
+      # Generate directional keybinds.
+      (lib.listToAttrs (
+        lib.concatMap
+          (
+            { direction, key }:
+            [
+              {
+                name = "hyprland-focus-${direction}";
+                value = {
+                  keys = "SUPER + ${key}";
+                  action = {
+                    kind = "focus";
+                    inherit direction;
+                  };
+                };
+              }
+              {
+                name = "hyprland-move-${direction}";
+                value = {
+                  keys = "SUPER + SHIFT + ${key}";
+                  action = {
+                    kind = "move-window";
+                    inherit direction;
+                  };
+                };
+              }
+              {
+                name = "hyprland-resize-${direction}";
+                value = {
+                  keys = "SUPER + ALT + ${key}";
+                  repeating = true;
+                  action = {
+                    kind = "resize-window";
+                    inherit direction;
+                  };
+                };
+              }
+            ]
+          )
+          [
+            {
+              key = "H";
+              direction = "left";
+            }
+            {
+              key = "J";
+              direction = "down";
+            }
+            {
+              key = "K";
+              direction = "up";
+            }
+            {
+              key = "L";
+              direction = "right";
+            }
+          ]
+      ))
+      {
+        hyprland-toggle-floating = {
+          keys = "SUPER + Space";
+          action.kind = "toggle-floating";
         };
 
-        dwindle = {
+        hyprland-toggle-fullscreen = {
-          preserve_split = true;
+          keys = "SUPER + F";
+          action.kind = "toggle-fullscreen";
         };
 
-        bind = [
+        hyprland-close-window = {
-          "$mod, Return, exec, $terminal"
+          keys = "SUPER + SHIFT + Q";
+          action.kind = "close-window";
+        };
+      }
+    ];
 
-          # Move focus.
+    registry.waybar.${config.networking.hostName}."hyprland/workspaces" = {
-          "$mod, H, movefocus, l"
+      position = "left";
-          "$mod, J, movefocus, d"
+      order = 10;
-          "$mod, K, movefocus, u"
+      settings = {
-          "$mod, L, movefocus, r"
+        format = "{id} {windows}";
-
+        format-window-separator = " ";
-          # Move the window within the layout.
+        window-rewrite-default = util.glyph "f2d0";
-          "$mod SHIFT, H, movewindow, l"
+        window-rewrite = lib.mapAttrs' (
-          "$mod SHIFT, J, movewindow, d"
+          _name: windowIcon: lib.nameValuePair "class<${windowIcon.class}>" windowIcon.icon
-          "$mod SHIFT, K, movewindow, u"
+        ) (lib.attrByPath [ config.networking.hostName ] { } config.registry.window-icon);
-          "$mod SHIFT, L, movewindow, r"
-
-          # Resize the active window.
-          "$mod ALT, H, resizeactive, -40 0"
-          "$mod ALT, J, resizeactive, 0 40"
-          "$mod ALT, K, resizeactive, 0 -40"
-          "$mod ALT, L, resizeactive, 40 0"
-
-          "$mod, Space, togglefloating,"
-          "$mod, F, fullscreen,"
-          # togglesplit is a dwindle layout message, reached through layoutmsg.
-          "$mod, T, layoutmsg, togglesplit"
-          "$mod SHIFT, T, exec, ${toggleLayout}"
-          "$mod SHIFT, Q, killactive,"
-          "$mod CTRL, Q, forcekillactive,"
-        ]
-        ++ workspaceBinds;
-
-        # Volume and brightness keys repeat while held, each raising a popup
-        # through the OSD client.
-        # Volume is capped at 100 percent.
-        # The client floors brightness so a full hold cannot black the screen out.
-        binde = [
-          ", XF86AudioRaiseVolume, exec, ${pkgs.swayosd}/bin/swayosd-client --output-volume raise --max-volume 100"
-          ", XF86AudioLowerVolume, exec, ${pkgs.swayosd}/bin/swayosd-client --output-volume lower"
-          ", XF86MonBrightnessUp, exec, ${pkgs.swayosd}/bin/swayosd-client --brightness raise"
-          ", XF86MonBrightnessDown, exec, ${pkgs.swayosd}/bin/swayosd-client --brightness lower"
-        ];
-
-        # Mute and media transport still fire while the session is locked.
-        bindl = [
-          ", XF86AudioMute, exec, ${pkgs.swayosd}/bin/swayosd-client --output-volume mute-toggle"
-          ", XF86AudioPlay, exec, ${pkgs.playerctl}/bin/playerctl play-pause"
-          ", XF86AudioNext, exec, ${pkgs.playerctl}/bin/playerctl next"
-          ", XF86AudioPrev, exec, ${pkgs.playerctl}/bin/playerctl previous"
-        ];
       };
     };
   };

configs/nixos/modules/desktop/session/hyprland/hypridle.nix

@@ -5,63 +5,34 @@
   ...
 }:
 # hypridle: idle-triggered locking and display power management.
-let
-  cfg = config.modules.desktop.session.hyprland.hypridle; # NOLINT(let_order)
-
-  # The guard drops the call when a locker is already up, so no idle trigger
-  # stacks a second hyprlock over the first.
-  lockCmd = "${pkgs.procps}/bin/pidof hyprlock || ${hyprlock}";
-  user = config.user.name;
-
-  hyprctl = "${config.programs.hyprland.package}/bin/hyprctl";
-  hyprlock = "${config.home-manager.users.${user}.programs.hyprlock.package}/bin/hyprlock";
-
-in
 {
-  options.modules.desktop.session.hyprland.hypridle = {
+  options.modules.desktop.session.hyprland.hypridle.enable =
-    enable = lib.mkEnableOption "hypridle idle management";
+    lib.mkEnableOption "hypridle idle management";
 
-    lockTimeout = lib.mkOption {
+  config = lib.mkIf config.modules.desktop.session.hyprland.hypridle.enable {
-      type = lib.types.ints.positive;
-      default = 300;
-      description = "Seconds of inactivity before the screen locks.";
-    };
-
-    screenOffTimeout = lib.mkOption {
-      type = lib.types.ints.positive;
-      default = 360;
-      description = "Seconds of inactivity before the displays are powered off.";
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
     # Closing the lid suspends, and every suspend locks first through the
     # before_sleep_cmd below, so the lid always lands at a locked screen.
     services.logind.settings.Login.HandleLidSwitch = "suspend";
 
-    home-manager.users.${user}.services.hypridle = {
+    home-manager.users.${config.user.name}.services.hypridle = {
       enable = true;
 
       settings = {
         general = {
-          lock_cmd = lockCmd;
+          # The guard drops the call when a locker is already up, so no idle
+          # trigger stacks a second hyprlock over the first.
+          lock_cmd = "${lib.getExe' pkgs.procps "pidof"} hyprlock || ${lib.getExe pkgs.hyprlock}";
           before_sleep_cmd = "loginctl lock-session";
-          # Waking restores the displays the screen-off listener may have cut.
+          # Waking pokes the compositor in case firmware leaves displays dark.
-          after_sleep_cmd = "${hyprctl} dispatch dpms on";
+          after_sleep_cmd = "${lib.getExe' config.programs.hyprland.package "hyprctl"} dispatch 'hl.dsp.dpms({ action = \"enable\" })'";
         };
 
         listener = [
           # Lock on idle.
           {
-            timeout = cfg.lockTimeout;
+            timeout = 300;
             on-timeout = "loginctl lock-session";
           }
-          # Power the displays off a little later, restoring them on any activity.
-          {
-            timeout = cfg.screenOffTimeout;
-            on-timeout = "${hyprctl} dispatch dpms off";
-            on-resume = "${hyprctl} dispatch dpms on";
-          }
         ];
       };
     };

configs/nixos/modules/desktop/session/hyprland/hyprlock.nix

@@ -2,45 +2,54 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # The lock screen: a hyprlock session-lock surface the compositor owns.
 let
-  cfg = config.modules.desktop.session.hyprland.hyprlock; # NOLINT(let_order)
+  sleepIcon = util.glyph [
-  user = config.user.name;
+    "db81"
-
+    "dcb2"
-  # The hyprlock this module installs, used by the lock keybind below.
+  ];
-  hyprlock = "${config.home-manager.users.${user}.programs.hyprlock.package}/bin/hyprlock";
+  sleepOffIcon = util.glyph [
-
+    "db81"
-  sleepIcon = builtins.fromJSON ''"\udb81\udcb2"'';
+    "dcb3"
-  sleepOffIcon = builtins.fromJSON ''"\udb81\udcb3"'';
+  ];
 
   idleLockToggle = pkgs.writeShellScript "lockscreen-idle-inhibit-toggle" ''
     unit=lockscreen-idle-inhibit.service
 
     refresh_waybar() {
-      ${pkgs.procps}/bin/pkill -RTMIN+9 waybar >/dev/null 2>&1 || true
+      ${lib.getExe' pkgs.procps "pkill"} -RTMIN+9 waybar >/dev/null 2>&1 || true
     }
 
-    if ${pkgs.systemd}/bin/systemctl --user is-active --quiet "$unit"; then
+    if ${lib.getExe' pkgs.systemd "systemctl"} --user is-active --quiet "$unit"; then
-      ${pkgs.systemd}/bin/systemctl --user stop "$unit"
+      ${lib.getExe' pkgs.systemd "systemctl"} --user stop "$unit"
       refresh_waybar
-      ${pkgs.swayosd}/bin/swayosd-client --custom-message "${sleepIcon}"
+      ${lib.getExe' pkgs.swayosd "swayosd-client"} --custom-message "${sleepIcon}"
       exit 0
     fi
 
-    if ${pkgs.systemd}/bin/systemd-run \
+    if ${lib.getExe' pkgs.systemd "systemd-run"} \
       --user \
       --collect \
       --unit=lockscreen-idle-inhibit \
       --description="Disable idle-triggered screen locking" \
-      ${pkgs.systemd}/bin/systemd-inhibit \
+      ${lib.getExe' pkgs.systemd "systemd-inhibit"} \
       --what=idle \
       --who=lockscreen-hotkey \
       --why="lock screen disabled by hotkey" \
-      ${pkgs.coreutils}/bin/sleep infinity >/dev/null; then
+      ${lib.getExe' pkgs.coreutils "sleep"} infinity >/dev/null; then
       refresh_waybar
-      ${pkgs.swayosd}/bin/swayosd-client --custom-message "${sleepOffIcon}"
+      ${lib.getExe' pkgs.swayosd "swayosd-client"} --custom-message "${sleepOffIcon}"
+    fi
+  '';
+
+  idleLockStatus = pkgs.writeShellScript "waybar-idle-lock-status" ''
+    if ${lib.getExe' pkgs.systemd "systemctl"} --user is-active --quiet lockscreen-idle-inhibit.service; then
+      printf '{"text":"${sleepOffIcon}","tooltip":"Idle locking inhibited","class":"inhibited"}\n'
+    else
+      printf '{"text":"","class":"idle"}\n'
     fi
   '';
 in
@@ -48,8 +57,8 @@ in
   options.modules.desktop.session.hyprland.hyprlock.enable =
     lib.mkEnableOption "the hyprlock lock screen";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.hyprland.hyprlock.enable {
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = {
       # Colors and the lock-screen background come from Stylix's hyprlock target,
       # so only geometry and behaviour are set here.
       programs.hyprlock = {
@@ -82,14 +91,36 @@ in
           };
         };
       };
+    };
 
-      # Lock on Super+X.
+    registry.keybind.${config.networking.hostName} = {
-      # The guard drops the keypress when a locker is already up, so a second
+      hyprlock-lock = {
-      # hyprlock never stacks over the first.
+        keys = "SUPER + X";
-      wayland.windowManager.hyprland.settings.bind = [
+        action = {
-        "$mod, X, exec, ${pkgs.procps}/bin/pidof hyprlock || ${hyprlock}"
+          kind = "exec";
-        "$mod CTRL, X, exec, ${idleLockToggle}"
+          # The guard drops the call when a locker is already up, so no manual
-      ];
+          # trigger stacks a second hyprlock over the first.
+          command = "${lib.getExe' pkgs.procps "pidof"} hyprlock || ${lib.getExe pkgs.hyprlock}";
+        };
+      };
+
+      hyprlock-toggle-idle-inhibit = {
+        keys = "SUPER + CTRL + X";
+        action = {
+          kind = "exec";
+          command = "${idleLockToggle}";
+        };
+      };
+    };
+
+    registry.waybar.${config.networking.hostName}."custom/idle-lock" = {
+      order = 20;
+      settings = {
+        return-type = "json";
+        exec = "${idleLockStatus}";
+        interval = "once";
+        signal = 9;
+      };
     };
   };
 }

configs/nixos/modules/desktop/session/login.nix

@@ -6,19 +6,20 @@
 }:
 # Text login: greetd running the tuigreet greeter, which starts the session
 # through the universal Wayland session manager.
-let
-  cfg = config.modules.desktop.session.login; # NOLINT(let_order)
-in
 {
   options.modules.desktop.session.login.enable =
     lib.mkEnableOption "greetd with the tuigreet text greeter";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.login.enable {
     services.greetd = {
       enable = true;
-      settings.default_session.command =
+      settings.default_session.command = lib.escapeShellArgs [
-        "${lib.getExe pkgs.tuigreet} --time --remember "
+        (lib.getExe pkgs.tuigreet)
-        + "--cmd 'uwsm start -e -D Hyprland hyprland.desktop'";
+        "--time"
+        "--remember"
+        "--cmd"
+        "${lib.getExe config.programs.uwsm.package} start -e -D Hyprland hyprland.desktop"
+      ];
     };
   };
 }

configs/nixos/modules/desktop/session/mako.nix

@@ -2,20 +2,29 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # mako as the notification daemon: toasts, a do-not-disturb mode, and history recall.
 let
-  cfg = config.modules.desktop.session.mako; # NOLINT(let_order)
+  dndStatus = pkgs.writeShellScript "waybar-dnd-status" ''
-  user = config.user.name;
+    if ${lib.getExe' pkgs.mako "makoctl"} mode 2>/dev/null | ${lib.getExe pkgs.gnugrep} -qx dnd; then
+      printf '{"text":"${util.glyph "f1f6"}","tooltip":"Do not disturb: on","class":"dnd"}\n'
+    else
+      printf '{"text":"${util.glyph "f0f3"}","tooltip":"Notifications on","class":"active"}\n'
+    fi
+  '';
 
-  makoctl = "${pkgs.mako}/bin/makoctl";
+  dndToggle = pkgs.writeShellScript "waybar-dnd-toggle" ''
+    ${lib.getExe' pkgs.mako "makoctl"} mode -t dnd >/dev/null 2>&1
+    ${lib.getExe' pkgs.procps "pkill"} -RTMIN+8 waybar
+  '';
 in
 {
   options.modules.desktop.session.mako.enable = lib.mkEnableOption "the mako notification daemon";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.mako.enable {
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = {
       # Colors and the popup font come from Stylix's mako target, so only
       # behaviour is set here.
       services.mako = {
@@ -32,13 +41,25 @@ in
           "mode=dnd".invisible = true;
         };
       };
+    };
 
-      # Recall the last notification from history, keyboard-only like the rest
+    registry.keybind.${config.networking.hostName}.mako-history = {
-      # of the session.
+      keys = "SUPER + N";
-      # $mod is defined by the compositor config these binds share.
+      action = {
-      wayland.windowManager.hyprland.settings.bind = [
+        kind = "exec";
-        "$mod, N, exec, ${makoctl} restore"
+        command = "${lib.getExe' pkgs.mako "makoctl"} restore";
-      ];
+      };
+    };
+
+    registry.waybar.${config.networking.hostName}."custom/dnd" = {
+      order = 80;
+      settings = {
+        return-type = "json";
+        exec = "${dndStatus}";
+        on-click = "${dndToggle}";
+        interval = "once";
+        signal = 8;
+      };
     };
   };
 }

configs/nixos/modules/desktop/session/portals.nix

@@ -1,13 +1,10 @@
 { config, lib, ... }:
 # XDG desktop portal routing for in-app screen sharing and file dialogs.
-let
-  cfg = config.modules.desktop.session.portals; # NOLINT(let_order)
-in
 {
   options.modules.desktop.session.portals.enable =
     lib.mkEnableOption "XDG desktop portals for in-app screen sharing and file dialogs";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.portals.enable {
     # The backend packages arrive with the compositor, so only the routing is set
     # here.
     # Screen sharing, screenshots, and global shortcuts need the compositor's

configs/nixos/modules/desktop/session/rofi.nix

@@ -6,47 +6,61 @@
 }:
 # rofi as the desktop launcher and dmenu-style menu frontend.
 let
-  cfg = config.modules.desktop.session.rofi; # NOLINT(let_order)
-  user = config.user.name;
-
   # A session menu built on the same themed rofi, so the power actions look
   # like every other menu the launcher drives.
   powerMenu = pkgs.writeShellScript "rofi-power-menu" ''
     chosen=$(printf '%s\n' Lock Suspend 'Log out' Reboot 'Shut down' \
-      | ${pkgs.rofi}/bin/rofi -dmenu -i -p Power)
+      | ${lib.getExe pkgs.rofi} -dmenu -i -p Power)
     case "$chosen" in
-      Lock) ${pkgs.systemd}/bin/loginctl lock-session ;;
+      Lock) ${lib.getExe' pkgs.systemd "loginctl"} lock-session ;;
-      Suspend) ${pkgs.systemd}/bin/systemctl suspend ;;
+      Suspend) ${lib.getExe' pkgs.systemd "systemctl"} suspend ;;
-      'Log out') ${pkgs.systemd}/bin/loginctl terminate-session "$XDG_SESSION_ID" ;;
+      'Log out') ${lib.getExe' pkgs.systemd "loginctl"} terminate-session "$XDG_SESSION_ID" ;;
-      Reboot) ${pkgs.systemd}/bin/systemctl reboot ;;
+      Reboot) ${lib.getExe' pkgs.systemd "systemctl"} reboot ;;
-      'Shut down') ${pkgs.systemd}/bin/systemctl poweroff ;;
+      'Shut down') ${lib.getExe' pkgs.systemd "systemctl"} poweroff ;;
     esac
   '';
 in
 {
   options.modules.desktop.session.rofi.enable = lib.mkEnableOption "the rofi launcher";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.rofi.enable {
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = hm: {
-      # No theme is set here: Stylix's rofi target supplies the Nord one.
+      # Stylix supplies the Nord theme.
       programs.rofi = {
         enable = true;
-
         # Application launch is the only mode, kept minimal so the prompt opens
         # as fast as rofi can read the desktop entries.
         # Icons are off: resolving one per entry is the bulk of drun's startup.
-        extraConfig = {
+        settings = {
+          font = lib.mkForce "JetBrains Mono 12";
           modi = "drun";
           show-icons = false;
         };
+
+        theme.window = {
+          border = hm.config.lib.formats.rasi.mkLiteral "2px";
+          border-color = hm.config.lib.formats.rasi.mkLiteral "#FFFFFF";
+          border-radius = hm.config.lib.formats.rasi.mkLiteral "8px";
+        };
+      };
+    };
+
+    registry.keybind.${config.networking.hostName} = {
+      rofi-launcher = {
+        keys = "SUPER + R";
+        action = {
+          kind = "exec";
+          command = "${lib.getExe pkgs.rofi} -show drun";
+        };
       };
 
-      # The launcher and the session menu, kept next to the tool they drive.
+      rofi-power-menu = {
-      # $mod is defined by the compositor config these binds share.
+        keys = "SUPER + SHIFT + X";
-      wayland.windowManager.hyprland.settings.bind = [
+        action = {
-        "$mod, R, exec, ${pkgs.rofi}/bin/rofi -show drun"
+          kind = "exec";
-        "$mod SHIFT, X, exec, ${powerMenu}"
+          command = "${powerMenu}";
-      ];
+        };
+      };
     };
   };
 }

configs/nixos/modules/desktop/session/waybar.nix

@@ -6,166 +6,57 @@
 }:
 # Waybar: a top status bar reading system state at a glance.
 let
-  cfg = config.modules.desktop.session.waybar; # NOLINT(let_order)
+  moduleNames =
-  vpnClient = config.modules.network.vpn-client;
+    position:
+    map (entry: entry.name) (
+      lib.sort (left: right: left.module.order < right.module.order) (
+        lib.filter (entry: entry.module.position == position) moduleEntries
+      )
+    );
 
-  # A Nerd Font Private-Use-Area codepoint as a literal character, decoded
+  moduleEntries = lib.mapAttrsToList (name: module: {
-  # through JSON so the glyph survives as bytes rather than an editor paste.
+    inherit name module;
-  g = code: builtins.fromJSON ''"\u${code}"'';
+  }) modules;
-  user = config.user.name;
 
-  sleepOffIcon = builtins.fromJSON ''"\udb81\udcb3"'';
+  modules = lib.attrByPath [ config.networking.hostName ] { } config.registry.waybar;
-
-  # Renders and toggles mako's do-not-disturb mode.
-  # With no mako daemon answering, the status reads "notifications on", keeping
-  # the widget inert rather than broken.
-  dndStatus = pkgs.writeShellScript "waybar-dnd-status" ''
-    if ${pkgs.mako}/bin/makoctl mode 2>/dev/null | ${pkgs.gnugrep}/bin/grep -qx dnd; then
-      printf '{"text":"${g "f1f6"}","tooltip":"Do not disturb: on","class":"dnd"}\n'
-    else
-      printf '{"text":"${g "f0f3"}","tooltip":"Notifications on","class":"active"}\n'
-    fi
-  '';
-
-  dndToggle = pkgs.writeShellScript "waybar-dnd-toggle" ''
-    ${pkgs.mako}/bin/makoctl mode -t dnd >/dev/null 2>&1
-    ${pkgs.procps}/bin/pkill -RTMIN+8 waybar
-  '';
-
-  # Lit while a wf-recorder capture is running.
-  # Empty text collapses the widget when idle, so it shows nothing until then.
-  recStatus = pkgs.writeShellScript "waybar-recording-status" ''
-    if ${pkgs.procps}/bin/pgrep -x wf-recorder >/dev/null; then
-      printf '{"text":"${g "f03d"}","tooltip":"Recording","class":"recording"}\n'
-    else
-      printf '{"text":"","class":"idle"}\n'
-    fi
-  '';
-
-  idleLockStatus = pkgs.writeShellScript "waybar-idle-lock-status" ''
-    if ${pkgs.systemd}/bin/systemctl --user is-active --quiet lockscreen-idle-inhibit.service; then
-      printf '{"text":"${sleepOffIcon}","tooltip":"Idle locking inhibited","class":"inhibited"}\n'
-    else
-      printf '{"text":"","class":"idle"}\n'
-    fi
-  '';
-
-  vpnStatus = pkgs.writeShellScript "waybar-vpn-status" ''
-    interface=${lib.escapeShellArg vpnClient.interface}
-
-    if ! ${pkgs.iproute2}/bin/ip link show dev "$interface" >/dev/null 2>&1; then
-      printf '{"text":"","class":"idle"}\n'
-      exit 0
-    fi
-
-    ipaddr=$(${pkgs.iproute2}/bin/ip -4 -o addr show dev "$interface" | ${pkgs.gawk}/bin/awk '{ print $4; exit }')
-
-    ${pkgs.jq}/bin/jq -cn \
-      --arg text "󰲝" \
-      --arg tooltip "VPN $interface: ''${ipaddr:-no IPv4}" \
-      --arg class "active" \
-      '{ text: $text, tooltip: $tooltip, class: $class }'
-  '';
-
-  networkStatus = pkgs.writeShellScript "waybar-network-status" ''
-    active=$(
-      ${pkgs.networkmanager}/bin/nmcli -t -f DEVICE,TYPE,STATE,CONNECTION device status \
-        | ${pkgs.gawk}/bin/awk -F: '$3 == "connected" && $2 != "loopback" { print; exit }'
-    )
-
-    if [ -z "$active" ]; then
-      ${pkgs.jq}/bin/jq -cn \
-        --arg text "${g "f127"} off" \
-        --arg tooltip "Network disconnected" \
-        --arg class "disconnected" \
-        '{ text: $text, tooltip: $tooltip, class: $class }'
-      exit 0
-    fi
-
-    IFS=: read -r device type _state connection <<< "$active"
-
-    case "$type" in
-      wifi) icon="${g "f1eb"}" ;;
-      ethernet) icon="LAN" ;;
-      *) icon="NET" ;;
-    esac
-
-    ipaddr=$(${pkgs.iproute2}/bin/ip -4 -o addr show dev "$device" | ${pkgs.gawk}/bin/awk '{ print $4; exit }')
-
-    ${pkgs.jq}/bin/jq -cn \
-      --arg text "$icon $connection" \
-      --arg tooltip "$device: ''${ipaddr:-no IPv4}" \
-      --arg class "$type" \
-      '{ text: $text, tooltip: $tooltip, class: $class }'
-  '';
 in
 {
   options.modules.desktop.session.waybar.enable = lib.mkEnableOption "the Waybar status bar";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.session.waybar.enable {
     # A symbols font backs the module glyphs, so pango falls back to it for the
     # codepoints Stylix's monospace font does not carry.
     fonts.packages = [ pkgs.nerd-fonts.symbols-only ];
 
-    home-manager.users.${user}.programs.waybar = {
+    home-manager.users.${config.user.name}.programs.waybar = {
       enable = true;
+      package = pkgs.alexion.waybar;
 
       # A user service bound to graphical-session.target, which uwsm activates,
       # so the bar comes up with the session and no compositor exec-once.
       systemd.enable = true;
 
-      style = ''
+      settings.mainBar = lib.mkMerge [
-        .modules-right {
+        {
-          margin-right: 8px;
+          layer = "top";
+          position = "top";
+          height = 30;
+          spacing = 8;
+          margin-right = 8;
+
+          modules-left = moduleNames "left";
+          modules-center = moduleNames "center";
+          modules-right = moduleNames "right";
         }
+        (lib.mapAttrs (_name: module: module.settings) modules)
+      ];
+    };
 
-        #custom-dnd {
+    registry.waybar.${config.networking.hostName} = {
-          margin-right: 8px;
+      clock = {
-        }
+        position = "center";
-      '';
+        order = 10;
-
+        settings = {
-      settings.mainBar = {
-        layer = "top";
-        position = "top";
-        height = 30;
-        spacing = 8;
-
-        modules-left = [ "hyprland/workspaces" ];
-        modules-center = [ "clock" ];
-        modules-right = [
-          "custom/recording"
-          "custom/idle-lock"
-          "mpris"
-          "wireplumber"
-        ]
-        ++ lib.optional vpnClient.enable "custom/vpn"
-        ++ [
-          "custom/network"
-          "battery"
-          "custom/dnd"
-        ];
-
-        # Per-application icons for the windows on each workspace, mapped from
-        # window class with a neutral glyph for anything unlisted.
-        "hyprland/workspaces" = {
-          on-click = "activate";
-          format = "{id} {windows}";
-          format-window-separator = " ";
-          window-rewrite-default = g "f2d0";
-          window-rewrite = {
-            "class<Alacritty>" = g "f120";
-            "class<com.mitchellh.ghostty>" = g "f120";
-            "class<.*[Ff]irefox.*>" = g "f269";
-            "class<chromium.*>" = g "f268";
-            "class<[Cc]ode>" = g "f121";
-            "class<obsidian>" = g "f02d";
-            "class<[Ss]ignal>" = g "f4ad";
-            "class<[Ss]team>" = g "f1b6";
-            "class<[Vv]esktop>" = g "f1ff";
-          };
-        };
-
-        clock = {
           format = "{:%a %d %b  %H:%M}";
           tooltip-format = "<tt>{calendar}</tt>";
           calendar = {
@@ -174,77 +65,6 @@ in
             format.today = "<b><u>{}</u></b>";
           };
         };
-
-        mpris = {
-          format = "${g "f001"} {title}";
-          format-paused = "${g "f04c"} {title}";
-          max-length = 40;
-          on-click = "play-pause";
-          on-scroll-up = "next";
-          on-scroll-down = "previous";
-        };
-
-        wireplumber = {
-          format = "{icon} {volume}%";
-          format-muted = "${g "f026"} muted";
-          format-icons = [
-            (g "f026")
-            (g "f027")
-            (g "f028")
-          ];
-          on-click = "${pkgs.wireplumber}/bin/wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle";
-        };
-
-        "custom/vpn" = {
-          return-type = "json";
-          exec = "${vpnStatus}";
-          interval = 5;
-        };
-
-        "custom/network" = {
-          return-type = "json";
-          exec = "${networkStatus}";
-          interval = 5;
-        };
-
-        battery = {
-          format = "{icon} {capacity}%";
-          format-charging = "${g "f0e7"} {capacity}%";
-          format-icons = [
-            (g "f244")
-            (g "f243")
-            (g "f242")
-            (g "f241")
-            (g "f240")
-          ];
-          states = {
-            warning = 20;
-            critical = 10;
-          };
-        };
-
-        "custom/dnd" = {
-          return-type = "json";
-          exec = "${dndStatus}";
-          on-click = "${dndToggle}";
-          interval = "once";
-          signal = 8;
-        };
-
-        # Recording state has no event to hook, so the widget samples the
-        # wf-recorder process once a second.
-        "custom/recording" = {
-          return-type = "json";
-          exec = "${recStatus}";
-          interval = 1;
-        };
-
-        "custom/idle-lock" = {
-          return-type = "json";
-          exec = "${idleLockStatus}";
-          interval = "once";
-          signal = 9;
-        };
       };
     };
   };

configs/nixos/modules/desktop/utilities/audio.nix

@@ -1,12 +1,34 @@
-{ config, lib, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  util,
+  ...
+}:
 # PipeWire as the desktop audio server.
 let
-  cfg = config.modules.desktop.utilities.audio; # NOLINT(let_order)
+  volumeKey = keys: command: {
+    inherit keys;
+    repeating = true;
+    action = {
+      kind = "exec";
+      command = "${lib.getExe' pkgs.swayosd "swayosd-client"} --output-volume ${command}";
+    };
+  };
+
+  mediaKey = keys: command: {
+    inherit keys;
+    locked = true;
+    action = {
+      kind = "exec";
+      command = "${lib.getExe pkgs.playerctl} ${command}";
+    };
+  };
 in
 {
   options.modules.desktop.utilities.audio.enable = lib.mkEnableOption "the PipeWire audio server";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.audio.enable {
     # Realtime scheduling for the audio threads, so playback survives load.
     security.rtkit.enable = true;
 
@@ -15,5 +37,50 @@ in
       alsa.enable = true;
       pulse.enable = true;
     };
+
+    registry.keybind.${config.networking.hostName} = {
+      volume-up = volumeKey "XF86AudioRaiseVolume" "raise --max-volume 100";
+      volume-down = volumeKey "XF86AudioLowerVolume" "lower";
+      mute = {
+        keys = "XF86AudioMute";
+        locked = true;
+        action = {
+          kind = "exec";
+          command = "${lib.getExe' pkgs.swayosd "swayosd-client"} --output-volume mute-toggle";
+        };
+      };
+
+      media-play = mediaKey "XF86AudioPlay" "play-pause";
+      media-next = mediaKey "XF86AudioNext" "next";
+      media-previous = mediaKey "XF86AudioPrev" "previous";
+    };
+
+    registry.waybar.${config.networking.hostName} = {
+      mpris = {
+        order = 30;
+        settings = {
+          format = "${util.glyph "f001"} {title}";
+          format-paused = "${util.glyph "f04c"} {title}";
+          max-length = 40;
+          on-click = "play-pause";
+          on-scroll-up = "next";
+          on-scroll-down = "previous";
+        };
+      };
+
+      wireplumber = {
+        order = 40;
+        settings = {
+          format = "{icon} {volume}%";
+          format-muted = "${util.glyph "f026"} muted";
+          format-icons = [
+            (util.glyph "f026")
+            (util.glyph "f027")
+            (util.glyph "f028")
+          ];
+          on-click = "${lib.getExe' pkgs.wireplumber "wpctl"} set-mute @DEFAULT_AUDIO_SINK@ toggle";
+        };
+      };
+    };
   };
 }

configs/nixos/modules/desktop/utilities/clipboard.nix

@@ -6,30 +6,23 @@
 }:
 # Clipboard history: cliphist records every copy, picked back through rofi.
 let
-  cfg = config.modules.desktop.utilities.clipboard; # NOLINT(let_order)
-  user = config.user.name;
-
-  cliphist = "${pkgs.cliphist}/bin/cliphist";
-  rofi = "${pkgs.rofi}/bin/rofi";
-  wl-copy = "${pkgs.wl-clipboard}/bin/wl-copy";
-
   # The picker reuses the themed rofi, so history looks like every other menu
   # the launcher drives.
   # decode is needed because list emits id-prefixed lines rather than the copied
   # bytes, so the chosen id has to be resolved back before it can be re-copied.
   picker = pkgs.writeShellScript "clipboard-picker" ''
-    ${cliphist} list \
+    ${lib.getExe pkgs.cliphist} list \
-      | ${rofi} -dmenu -i -p Clipboard \
+      | ${lib.getExe pkgs.rofi} -dmenu -i -p Clipboard \
-      | ${cliphist} decode \
+      | ${lib.getExe pkgs.cliphist} decode \
-      | ${wl-copy}
+      | ${lib.getExe' pkgs.wl-clipboard "wl-copy"}
   '';
 in
 {
   options.modules.desktop.utilities.clipboard.enable =
     lib.mkEnableOption "cliphist clipboard history";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.clipboard.enable {
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = {
       # wl-copy and wl-paste on PATH, so the shell can pipe into and out of the
       # clipboard.
       # The watchers and picker above reach wl-clipboard by store path, so this
@@ -39,11 +32,14 @@ in
       # Two watchers record text and images to history, bound to the graphical
       # session so uwsm starts and stops them with it.
       services.cliphist.enable = true;
+    };
 
-      # $mod is defined by the compositor config these binds share.
+    registry.keybind.${config.networking.hostName}.clipboard-history = {
-      wayland.windowManager.hyprland.settings.bind = [
+      keys = "SUPER + SHIFT + V";
-        "$mod SHIFT, V, exec, ${picker}"
+      action = {
-      ];
+        kind = "exec";
+        command = "${picker}";
+      };
     };
   };
 }

configs/nixos/modules/desktop/utilities/osd.nix

@@ -5,36 +5,52 @@
   ...
 }:
 # SwayOSD: a transient on-screen popup for volume and brightness changes.
-let
-  cfg = config.modules.desktop.utilities.osd; # NOLINT(let_order)
-  user = config.user.name;
-in
 {
   options.modules.desktop.utilities.osd.enable =
     lib.mkEnableOption "the SwayOSD volume and brightness popup";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.osd.enable {
     environment.systemPackages = [ pkgs.swayosd ];
 
     # The udev rule chgrps each backlight's brightness node to `video` and adds
     # group write, so the server dims the panel without root.
     # Membership below grants the running session that access.
     services.udev.packages = [ pkgs.swayosd ];
-    users.users.${user}.extraGroups = [ "video" ];
+    users.users.${config.user.name}.extraGroups = [ "video" ];
 
     # The server draws the popups, so it runs for the whole graphical session.
     # It binds to the target uwsm activates.
-    home-manager.users.${user}.systemd.user.services.swayosd = {
+    home-manager.users.${config.user.name}.systemd.user.services.swayosd = {
       Unit = {
         Description = "SwayOSD on-screen display server";
         PartOf = [ "graphical-session.target" ];
         After = [ "graphical-session.target" ];
       };
       Service = {
-        ExecStart = "${pkgs.swayosd}/bin/swayosd-server";
+        ExecStart = lib.getExe' pkgs.swayosd "swayosd-server";
         Restart = "on-failure";
       };
       Install.WantedBy = [ "graphical-session.target" ];
     };
+
+    registry.keybind.${config.networking.hostName} = {
+      brightness-up = {
+        keys = "XF86MonBrightnessUp";
+        repeating = true;
+        action = {
+          kind = "exec";
+          command = "${lib.getExe' pkgs.swayosd "swayosd-client"} --brightness raise";
+        };
+      };
+
+      brightness-down = {
+        keys = "XF86MonBrightnessDown";
+        repeating = true;
+        action = {
+          kind = "exec";
+          command = "${lib.getExe' pkgs.swayosd "swayosd-client"} --brightness lower";
+        };
+      };
+    };
   };
 }

configs/nixos/modules/desktop/utilities/recording.nix

@@ -2,54 +2,67 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 # Keybound screen recording: pick a region, then toggle a video-only capture.
 let
-  cfg = config.modules.desktop.utilities.recording; # NOLINT(let_order)
+  # A single key starts and stops recording.
-  user = config.user.name;
+  # Waybar refreshes on state changes instead of polling.
+  recordingToggle = pkgs.writeShellScript "screen-record-toggle" ''
+    refresh_waybar() {
+      ${lib.getExe' pkgs.procps "pkill"} -RTMIN+10 waybar >/dev/null 2>&1 || true
+    }
 
-  slurp = "${pkgs.slurp}/bin/slurp";
+    if ${lib.getExe' pkgs.procps "pgrep"} -x wf-recorder >/dev/null; then
-  wf-recorder = "${pkgs.wf-recorder}/bin/wf-recorder";
+      ${lib.getExe' pkgs.procps "pkill"} -INT -x wf-recorder
-  notify-send = "${pkgs.libnotify}/bin/notify-send";
-  pgrep = "${pkgs.procps}/bin/pgrep";
-  pkill = "${pkgs.procps}/bin/pkill";
-  date = "${pkgs.coreutils}/bin/date";
-  mkdir = "${pkgs.coreutils}/bin/mkdir";
-  xdgUserDir = "${pkgs.xdg-user-dirs}/bin/xdg-user-dir";
-
-  # A single key both starts and stops.
-  # A running wf-recorder is stopped with SIGINT so it finalises the file.
-  # Otherwise slurp picks a region and wf-recorder runs in the foreground until
-  # that stop arrives, so this instance lives for the whole recording and then
-  # reports it saved.
-  # No -a means no audio is captured.
-  toggle = pkgs.writeShellScript "screen-record-toggle" ''
-    if ${pgrep} -x wf-recorder >/dev/null; then
-      ${pkill} -INT -x wf-recorder
       exit 0
     fi
 
-    region=$(${slurp}) || exit 0
+    region=$(${lib.getExe pkgs.slurp}) || exit 0
-    dir="$(${xdgUserDir} VIDEOS)/Recordings"
+    dir="$(${lib.getExe' pkgs.xdg-user-dirs "xdg-user-dir"} VIDEOS)/Recordings"
-    ${mkdir} -p "$dir"
+    ${lib.getExe' pkgs.coreutils "mkdir"} -p "$dir"
-    file="$dir/recording-$(${date} +%Y%m%d-%H%M%S).mp4"
+    file="$dir/recording-$(${lib.getExe' pkgs.coreutils "date"} +%Y%m%d-%H%M%S).mp4"
 
-    ${notify-send} -a "Screen recording" "Recording started" "Region capture, no audio."
+    ${lib.getExe' pkgs.libnotify "notify-send"} -a "Screen recording" "Recording started" "Region capture, no audio."
-    ${wf-recorder} -g "$region" -f "$file"
+    ${lib.getExe pkgs.wf-recorder} -g "$region" -f "$file" &
-    ${notify-send} -a "Screen recording" "Recording saved" "$file"
+    recorder=$!
+    refresh_waybar
+    wait "$recorder" || true
+    refresh_waybar
+    ${lib.getExe' pkgs.libnotify "notify-send"} -a "Screen recording" "Recording saved" "$file"
+  '';
+
+  # Empty text collapses the widget when recording is idle.
+  recordingStatus = pkgs.writeShellScript "waybar-recording-status" ''
+    if ${lib.getExe' pkgs.procps "pgrep"} -x wf-recorder >/dev/null; then
+      printf '{"text":"${util.glyph "f03d"}","tooltip":"Recording","class":"recording"}\n'
+    else
+      printf '{"text":"","class":"idle"}\n'
+    fi
   '';
 in
 {
   options.modules.desktop.utilities.recording.enable =
     lib.mkEnableOption "wf-recorder screen recording";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.recording.enable {
-    home-manager.users.${user} = {
+    registry.keybind.${config.networking.hostName}.recording-toggle = {
-      # $mod is defined by the compositor config these binds share.
+      keys = "SUPER + SHIFT + R";
-      wayland.windowManager.hyprland.settings.bind = [
+      action = {
-        "$mod SHIFT, R, exec, ${toggle}"
+        kind = "exec";
-      ];
+        command = "${recordingToggle}";
+      };
+    };
+
+    registry.waybar.${config.networking.hostName}."custom/recording" = {
+      order = 10;
+      settings = {
+        return-type = "json";
+        exec = "${recordingStatus}";
+        interval = "once";
+        signal = 10;
+      };
     };
   };
 }

configs/nixos/modules/desktop/utilities/screenshot.nix

@@ -7,27 +7,26 @@
 # Keyboard-driven screenshots copy to the clipboard before Satty opens for
 # annotation. Satty copies annotated screenshots when it saves them.
 let
-  cfg = config.modules.desktop.utilities.screenshot; # NOLINT(let_order)
+  screenshotKey = keys: target: {
-  user = config.user.name;
+    inherit keys;
-
+    action = {
-  grimblast = "${pkgs.grimblast}/bin/grimblast";
+      kind = "exec";
-  satty = "${pkgs.satty}/bin/satty";
+      command = "${capture target}";
-  tee = "${pkgs.coreutils}/bin/tee";
+    };
-  wl-copy = "${pkgs.wl-clipboard}/bin/wl-copy";
+  };
-  xdgUserDir = "${pkgs.xdg-user-dirs}/bin/xdg-user-dir";
 
   # Copy the original screenshot before Satty opens.
   # Satty copies and saves annotated screenshots when the user presses Enter.
   capture =
     target:
     pkgs.writeShellScript "screenshot-${target}" ''
-      dir="$(${xdgUserDir} PICTURES)/Screenshots"
+      dir="$(${lib.getExe' pkgs.xdg-user-dirs "xdg-user-dir"} PICTURES)/Screenshots"
-      mkdir -p "$dir"
+      ${lib.getExe' pkgs.coreutils "mkdir"} -p "$dir"
-      ${grimblast} save ${target} - \
+      ${lib.getExe pkgs.grimblast} save ${target} - \
-        | ${tee} >(${wl-copy}) \
+        | ${lib.getExe' pkgs.coreutils "tee"} >(${lib.getExe' pkgs.wl-clipboard "wl-copy"}) \
-        | ${satty} --filename - \
+        | ${lib.getExe pkgs.satty} --filename - \
           --output-filename "$dir/screenshot-%Y%m%d-%H%M%S.png" \
-          --copy-command ${wl-copy} \
+          --copy-command ${lib.getExe' pkgs.wl-clipboard "wl-copy"} \
           --save-after-copy \
           --early-exit \
           --actions-on-enter save-to-clipboard
@@ -37,24 +36,22 @@ in
   options.modules.desktop.utilities.screenshot.enable =
     lib.mkEnableOption "screenshots via grimblast and satty";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.screenshot.enable {
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = {
       # satty is a one-shot annotation surface, so float it rather than letting
       # it claim a tile in the layout.
-      # windowrule v3 syntax: space-separated field/value tokens, comma
+      wayland.windowManager.hyprland.settings.window_rule = [
-      # separated, with matchers under a match: prefix and effects bare.
+        {
-      wayland.windowManager.hyprland.settings.windowrule = [
+          match.class = "^(com\\.gabm\\.satty)$";
-        "float 1, match:class ^(com\\.gabm\\.satty)$"
+          float = true;
+        }
       ];
+    };
 
-      # Print with plain/Shift/Ctrl for region/window/full.
+    registry.keybind.${config.networking.hostName} = {
-      # Super+L is already the hjkl focus and movement bind, so screenshots take
+      screenshot-area = screenshotKey "Print" "area";
-      # the Print key instead.
+      screenshot-active = screenshotKey "SHIFT + Print" "active";
-      wayland.windowManager.hyprland.settings.bind = [
+      screenshot-screen = screenshotKey "CTRL + Print" "screen";
-        ", Print, exec, ${capture "area"}"
-        "SHIFT, Print, exec, ${capture "active"}"
-        "CTRL, Print, exec, ${capture "screen"}"
-      ];
     };
   };
 }

configs/nixos/modules/desktop/utilities/theming.nix

@@ -6,22 +6,19 @@
 }:
 # Nord theming for the graphical layer, driven from one base16 scheme by Stylix.
 let
-  cfg = config.modules.desktop.utilities.theming; # NOLINT(let_order)
-
   # A single static Nord wallpaper, drawn as a vertical gradient across the
   # Polar Night shades so it needs no committed binary and no network fetch.
   wallpaper = pkgs.runCommand "nord-wallpaper.png" { } ''
-    ${pkgs.imagemagick}/bin/magick \
+    ${lib.getExe pkgs.imagemagick} \
       -size 2560x1440 gradient:'#2E3440'-'#3B4252' \
       "$out"
   '';
-  user = config.user.name;
 in
 {
   options.modules.desktop.utilities.theming.enable =
     lib.mkEnableOption "Nord theming of the graphical layer via Stylix";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.theming.enable {
     stylix = {
       enable = true;
 
@@ -60,7 +57,7 @@ in
       };
     };
 
-    home-manager.users.${user} = {
+    home-manager.users.${config.user.name} = {
       # Stylix drives the cursor through home-manager's pointer-cursor config,
       # whose generation must be switched on explicitly.
       home.pointerCursor.enable = true;
@@ -69,5 +66,10 @@ in
       # base16 mapping Stylix would apply, so its target stays off.
       stylix.targets.nixvim.enable = false;
     };
+
+    registry.env.${config.networking.hostName} = {
+      HYPRCURSOR_THEME = config.stylix.cursor.name;
+      HYPRCURSOR_SIZE = toString config.stylix.cursor.size;
+    };
   };
 }

configs/nixos/modules/desktop/utilities/userdirs.nix

@@ -1,15 +1,27 @@
 { config, lib, ... }:
-# Declares the XDG user directories, so a tool that queries them lands in a
+# Declares XDG user directories, so tools that query them use predictable
-# well-known folder a host can relocate from one place.
+# folders a host can relocate from one place.
 let
-  cfg = config.modules.desktop.utilities.userdirs; # NOLINT(let_order)
+  homeDirectory = "/home/${config.user.name}";
-  user = config.user.name;
 in
 {
   options.modules.desktop.utilities.userdirs.enable = lib.mkEnableOption "XDG user directories";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.desktop.utilities.userdirs.enable {
-    # Write ~/.config/user-dirs.dirs from the option defaults.
+    home-manager.users.${config.user.name}.xdg.userDirs = {
-    home-manager.users.${user}.xdg.userDirs.enable = true;
+      enable = true;
+      createDirectories = true;
+      setSessionVariables = true;
+
+      desktop = "${homeDirectory}/.ignoreme";
+      documents = "${homeDirectory}/docs";
+      download = "${homeDirectory}/dwn";
+      music = "${homeDirectory}/mus";
+      pictures = "${homeDirectory}/pic";
+      publicShare = "${homeDirectory}/.ignoreme";
+      templates = "${homeDirectory}/.ignoreme";
+      videos = "${homeDirectory}/vid";
+      projects = "${homeDirectory}/.ignoreme";
+    };
   };
 }

configs/nixos/modules/guest.nix

@@ -1,12 +1,9 @@
 { config, lib, ... }:
-let
-  cfg = config.modules.guest; # NOLINT(let_order)
-in
 {
-  options.modules.guest.enable = lib.mkEnableOption "nested-guest base configuration";
+  options.modules.guest.enable = lib.mkEnableOption "nested guest configuration";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.guest.enable {
-    modules.network.ssh.enable = lib.mkDefault true;
+    modules.network.ssh.enable = lib.mkDefault false;
     modules.network.ssh.hostKeys.restore = lib.mkDefault false;
   };
 }

configs/nixos/modules/host.nix

@@ -1,52 +0,0 @@
-{
-  config,
-  lib,
-  ...
-}:
-let
-  cfg = config.modules.host; # NOLINT(let_order)
-  inherit (config) user;
-  hostSecrets = ../secrets + "/${config.networking.hostName}.yaml";
-  passwordSecret = "${user.name}-password";
-in
-{
-  options.modules.host.enable = lib.mkEnableOption "physical-host base configuration";
-
-  config = lib.mkIf cfg.enable {
-    nix.settings.extra-substituters = [ "https://nyx-cache.chaotic.cx/" ];
-    nix.settings.extra-trusted-public-keys = [
-      "nyx-cache.chaotic.cx:dJxTrgMC3V3cFfyIiBQDQorG6k1LsqurH/srpMSq7qk="
-    ];
-
-    nix.gc.automatic = true;
-    nix.gc.dates = "Mon 03:15";
-    nix.gc.options = "--delete-older-than 30d";
-
-    nix.optimise.automatic = true;
-    nix.optimise.dates = [ "Thu 03:45" ];
-
-    boot.loader.systemd-boot.enable = true;
-    boot.loader.systemd-boot.configurationLimit = 15;
-    boot.loader.efi.canTouchEfiVariables = true;
-
-    hardware.enableRedistributableFirmware = true;
-    zramSwap.enable = true;
-
-    modules.network.ssh.enable = true;
-    modules.network.ssh.hostKeys.sopsFile = hostSecrets;
-    modules.network.ssh.userKey.sopsFile = hostSecrets;
-
-    services.xserver.xkb.layout = "us";
-    services.xserver.xkb.options = "caps:escape_shifted_capslock";
-    console.useXkbConfig = true;
-
-    sops.defaultSopsFile = ../secrets/shared.yaml;
-    sops.age.keyFile = "/var/lib/sops-nix/key.txt";
-    sops.age.sshKeyPaths = [ ];
-    sops.gnupg.sshKeyPaths = [ ];
-
-    users.mutableUsers = false;
-    sops.secrets.${passwordSecret}.neededForUsers = true;
-    users.users.${user.name}.hashedPasswordFile = config.sops.secrets.${passwordSecret}.path;
-  };
-}

configs/nixos/modules/host/cachyos.nix

@@ -0,0 +1,18 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+{
+  options.modules.host.cachyos.enable = lib.mkEnableOption "the CachyOS kernel";
+
+  config = lib.mkIf config.modules.host.cachyos.enable {
+    boot.kernelPackages = pkgs.linuxPackages_cachyos;
+
+    nix.settings.extra-substituters = [ "https://nyx-cache.chaotic.cx/" ];
+    nix.settings.extra-trusted-public-keys = [
+      "nyx-cache.chaotic.cx:dJxTrgMC3V3cFfyIiBQDQorG6k1LsqurH/srpMSq7qk="
+    ];
+  };
+}

configs/nixos/modules/host/default.nix

@@ -0,0 +1,106 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  hostSecrets = ../../secrets + "/${config.networking.hostName}.yaml";
+in
+{
+  options.modules.host.enable = lib.mkEnableOption "physical host configuration";
+
+  config = lib.mkIf config.modules.host.enable {
+    nix.gc.automatic = true;
+    nix.gc.dates = "Mon 03:15";
+    nix.gc.options = "--delete-older-than 30d";
+
+    nix.optimise.automatic = true;
+    nix.optimise.dates = [ "Thu 03:45" ];
+
+    boot.loader.systemd-boot.enable = true;
+    boot.loader.systemd-boot.configurationLimit = 15;
+    boot.loader.efi.canTouchEfiVariables = true;
+
+    hardware.enableRedistributableFirmware = true;
+    zramSwap.enable = true;
+
+    modules.network.ssh.enable = true;
+    modules.network.ssh.hostKeys.sopsFile = hostSecrets;
+    modules.network.ssh.userKey.sopsFile = hostSecrets;
+
+    services.xserver.xkb.layout = "us";
+    console.useXkbConfig = true;
+
+    sops.defaultSopsFile = ../../secrets/shared.yaml;
+    sops.age.keyFile = "/var/lib/sops-nix/key.txt";
+    sops.age.sshKeyPaths = [ ];
+    sops.gnupg.sshKeyPaths = [ ];
+
+    users.mutableUsers = false;
+    sops.secrets."${config.user.name}-password".neededForUsers = true;
+    users.users.${config.user.name}.hashedPasswordFile =
+      config.sops.secrets."${config.user.name}-password".path;
+
+    security.sudo.extraConfig = ''
+      Defaults env_keep += "EDITOR VISUAL"
+    '';
+
+    home-manager = {
+      useGlobalPkgs = true;
+      useUserPackages = true;
+      users.${config.user.name} = {
+        home.username = config.user.name;
+        home.homeDirectory = "/home/${config.user.name}";
+        home.stateVersion = config.system.stateVersion;
+        home.sessionVariables = lib.attrByPath [ config.networking.hostName ] { } config.registry.env;
+        home.packages = with pkgs; [
+          eza
+          unzip
+          wget
+        ];
+      };
+    };
+
+    registry.shell-shortcut.${config.networking.hostName} = {
+      ls = {
+        command = "eza -alg --color=always --group-directories-first --icons=always";
+        abbreviation = false;
+      };
+      ll = {
+        command = "eza -lg --color=always --group-directories-first --icons=always";
+        abbreviation = false;
+      };
+      lt = {
+        command = "eza -aT -I '.git' --color=always --group-directories-first --icons=always";
+        abbreviation = false;
+      };
+      ".." = "cd ..";
+      "..." = "cd ../..";
+      "...." = "cd ../../..";
+
+      cp = "cp -v";
+      tarnow = "tar -acf ";
+      untar = "tar -zxvf ";
+      wget = "wget -c ";
+      grep = "grep --color=auto";
+      fgrep = "fgrep --color=auto";
+      egrep = "egrep --color=auto";
+      jctl = "journalctl -p 3 -xb";
+
+      update = "sudo nixos-rebuild switch --flake .#${config.networking.hostName}";
+      cleanup = "sudo nix-collect-garbage -d";
+      sops-host = {
+        command = "sudo --preserve-env=EDITOR,VISUAL env SOPS_AGE_KEY_FILE=/var/lib/sops-nix/key.txt nix shell nixpkgs#sops nixpkgs#neovim -c sops";
+        abbreviation = false;
+      };
+    };
+
+    modules.shell.fish.enable = lib.mkDefault true;
+    modules.shell.fish.defaultShell = lib.mkDefault true;
+    modules.shell.tmux.enable = lib.mkDefault true;
+    modules.shell.nvim.enable = lib.mkDefault true;
+    modules.shell.git.enable = lib.mkDefault true;
+    modules.shell.yazi.enable = lib.mkDefault true;
+  };
+}

configs/nixos/modules/host/zfs.nix

@@ -0,0 +1,57 @@
+{
+  config,
+  lib,
+  ...
+}:
+# Imports existing ZFS pools that hold durable service state.
+let
+  cfg = config.modules.host.zfs;
+in
+{
+  options.modules.host.zfs = {
+    enable = lib.mkEnableOption "ZFS pool imports for durable service state";
+
+    pools = lib.mkOption {
+      type = lib.types.attrsOf (lib.types.attrsOf lib.types.path);
+      default = { };
+      example = lib.literalExpression ''
+        {
+          tank = {
+            media = "/srv/media";
+            downloads = "/srv/downloads";
+          };
+        }
+      '';
+      description = ''
+        Lists pools that NixOS imports at boot.
+        Maps each dataset name to its mount point.
+        NixOS does not create or destroy these pools during rebuilds.
+        An empty map imports the pool without declaring file systems.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot.supportedFilesystems = [ "zfs" ];
+
+    # This module derives a stable host ID from the configured hostname.
+    networking.hostId = builtins.substring 0 8 (
+      builtins.hashString "sha256" config.networking.hostName
+    );
+
+    boot.zfs.extraPools = lib.attrNames cfg.pools;
+
+    fileSystems = lib.mkMerge (
+      lib.mapAttrsToList (
+        pool: mounts:
+        lib.mapAttrs' (
+          dataset: mountpoint:
+          lib.nameValuePair mountpoint {
+            device = "${pool}/${dataset}";
+            fsType = "zfs";
+          }
+        ) mounts
+      ) cfg.pools
+    );
+  };
+}

configs/nixos/modules/monorepo.nix

@@ -4,13 +4,10 @@
   ...
 }:
 # Tools for developing this monorepo.
-let
-  cfg = config.modules.monorepo; # NOLINT(let_order)
-in
 {
   options.modules.monorepo.enable = lib.mkEnableOption "tools for developing this monorepo";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.monorepo.enable {
     modules.shell.bazel.enable = true;
     modules.shell.python.enable = true;
     modules.shell.rust.enable = true;

configs/nixos/modules/network/default.nix

@@ -0,0 +1,57 @@
+{
+  config,
+  lib,
+  pkgs,
+  util,
+  ...
+}:
+# NetworkManager-managed networking.
+let
+  networkStatus = pkgs.writeShellScript "waybar-network-status" ''
+    active=$(
+      ${lib.getExe' pkgs.networkmanager "nmcli"} -t -f DEVICE,TYPE,STATE,CONNECTION device status \
+        | ${lib.getExe' pkgs.gawk "awk"} -F: '$3 == "connected" && $2 != "loopback" { print; exit }'
+    )
+
+    if [ -z "$active" ]; then
+      ${lib.getExe pkgs.jq} -cn \
+        --arg text "${util.glyph "f127"} off" \
+        --arg tooltip "Network disconnected" \
+        --arg class "disconnected" \
+        '{ text: $text, tooltip: $tooltip, class: $class }'
+      exit 0
+    fi
+
+    IFS=: read -r device type _state connection <<< "$active"
+
+    case "$type" in
+      wifi) icon="${util.glyph "f1eb"}" ;;
+      ethernet) icon="LAN" ;;
+      *) icon="NET" ;;
+    esac
+
+    ipaddr=$(${lib.getExe' pkgs.iproute2 "ip"} -4 -o addr show dev "$device" | ${lib.getExe' pkgs.gawk "awk"} '{ print $4; exit }')
+
+    ${lib.getExe pkgs.jq} -cn \
+      --arg text "$icon $connection" \
+      --arg tooltip "$device: ''${ipaddr:-no IPv4}" \
+      --arg class "$type" \
+      '{ text: $text, tooltip: $tooltip, class: $class }'
+  '';
+in
+{
+  options.modules.network.enable = lib.mkEnableOption "NetworkManager-managed networking";
+
+  config = lib.mkIf config.modules.network.enable {
+    networking.networkmanager.enable = true;
+
+    registry.waybar.${config.networking.hostName}."custom/network" = {
+      order = 60;
+      settings = {
+        return-type = "json";
+        exec = "${networkStatus}";
+        interval = 5;
+      };
+    };
+  };
+}

configs/nixos/modules/network/ssh.nix

@@ -4,344 +4,203 @@
   registry,
   ...
 }:
-# SSH on this machine, in both directions.
+# Configures inbound and outbound SSH access.
 let
-  cfg = config.modules.network.ssh; # NOLINT(let_order)
+  cfg = config.modules.network.ssh;
-  targetType = types.submodule (
+  user = config.user.name;
-    { name, ... }:
-    {
-      options = {
-        hostName = mkOption {
-          type = types.str;
-          default = name;
-          description = ''
-            The network address OpenSSH connects to for this target.
-          '';
-        };
 
-        user = mkOption {
+  workstationNames = [
-          type = types.str;
+    "neogaia"
-          default = config.user.name;
+    "zeus"
-          description = ''
+  ];
-            The remote login name OpenSSH uses for this target.
+  serverNames = [ "pikachu" ];
-          '';
-        };
 
-        port = mkOption {
+  isWorkstation = lib.elem config.networking.hostName workstationNames;
-          type = types.port;
+  isServer = lib.elem config.networking.hostName serverNames;
-          default = 22;
-          description = ''
-            The TCP port OpenSSH uses for this target.
-          '';
-        };
 
-        aliases = mkOption {
+  clientKeyFor = host: builtins.readFile (../../hosts + "/${host}/ssh_user_ed25519_key.pub");
-          type = types.listOf types.str;
+  hostKeysFor =
-          default = [ name ];
+    host:
-          description = ''
+    map builtins.readFile [
-            Host patterns written into the generated OpenSSH client block.
+      (../../hosts + "/${host}/ssh_host_ed25519_key.pub")
-          '';
+      (../../hosts + "/${host}/ssh_host_rsa_key.pub")
-        };
+    ];
 
-        clientKey = mkOption {
+  managedTargets = lib.genAttrs (workstationNames ++ serverNames) (name: {
-          type = types.nullOr types.str;
+    hostName = registry.address.${name}.self;
-          default = null;
+    clientKey = clientKeyFor name;
-          description = ''
+    hostKeys = hostKeysFor name;
-            The public key this target offers when it connects outward.
+  });
-            Other machines admit this key according to the host groups below.
-          '';
-        };
 
-        hostKeys = mkOption {
+  extraTargets = {
-          type = types.listOf types.str;
+    # TODO: Pin Gitea's host key after migrating it from Proxmox.
-          default = [ ];
+    gitea = {
-          description = ''
+      hostName = "git.alexion.dev";
-            The public keys this target presents when it accepts inbound SSH.
+      port = 2022;
-            These keys generate system-wide known-host entries.
+      user = "gitea";
-          '';
+      aliases = [
-        };
+        "gitea"
-      };
+        "git.alexion.dev"
-    }
+      ];
-  );
+    };
+  };
 
+  mkTarget = name: target: {
+    hostName = target.hostName or name;
+    user = target.user or user;
+    port = target.port or 22;
+    aliases = target.aliases or [ name ];
+    clientKey = target.clientKey or null;
+    hostKeys = target.hostKeys or [ ];
+  };
+  targets = lib.mapAttrs mkTarget (managedTargets // extraTargets);
+
+  clientKeysFor = names: lib.filter (key: key != null) (map (name: targets.${name}.clientKey) names);
   defaultAuthorizedKeys = lib.flatten (
-    clientKeysFor workstationNames ++ optional isServer (clientKeysFor serverNames)
+    clientKeysFor workstationNames ++ lib.optional isServer (clientKeysFor serverNames)
   );
 
-  clientKeysFor = names: filter (key: key != null) (map (name: cfg.targets.${name}.clientKey) names);
+  outboundTargetNames =
+    let
+      groupTargets =
+        if isServer then
+          builtins.attrNames extraTargets ++ serverNames
+        else if isWorkstation then
+          builtins.attrNames extraTargets ++ serverNames ++ workstationNames
+        else
+          builtins.attrNames extraTargets;
+    in
+    lib.filter (name: name != config.networking.hostName) groupTargets;
 
-  workstationNames = targetNamesIn cfg.hosts.workstations;
+  knownHosts = lib.listToAttrs (
-  targetNamesIn = names: filter (name: hasAttr name cfg.targets) names;
+    lib.concatLists (
-
+      lib.mapAttrsToList (
-  isServer = elem currentHost cfg.hosts.servers;
-  currentHost = config.networking.hostName;
-  serverNames = targetNamesIn cfg.hosts.servers;
-
-  knownHosts = listToAttrs (
-    concatLists (
-      mapAttrsToList (
         targetName: target:
-        imap0 (
+        lib.imap0 (
           i: key:
-          nameValuePair "${targetName}-${toString i}" {
+          lib.nameValuePair "${targetName}-${toString i}" {
             hostNames = knownHostNamesFor target;
             publicKey = keyWithoutComment key;
           }
         ) target.hostKeys
-      ) cfg.targets
+      ) targets
     )
   );
   knownHostNamesFor =
     target:
     let
       withPort = name: if target.port == 22 then name else "[${name}]:${toString target.port}";
-      names = unique (target.aliases ++ [ target.hostName ]);
+      names = lib.unique (target.aliases ++ [ target.hostName ]);
     in
     map withPort names;
 
-  keyWithoutComment = key: concatStringsSep " " (lib.take 2 (lib.splitString " " key));
+  keyWithoutComment = key: lib.concatStringsSep " " (lib.take 2 (lib.splitString " " key));
 
   sshSettingsFor =
     name:
     let
-      target = cfg.targets.${name};
+      target = targets.${name};
     in
     {
-      header = "Host ${concatStringsSep " " target.aliases}";
+      header = "Host ${lib.concatStringsSep " " target.aliases}";
       HostName = target.hostName;
       User = target.user;
     }
-    // optionalAttrs (target.port != 22) { Port = target.port; };
+    // lib.optionalAttrs (target.port != 22) { Port = target.port; };
-
-  outboundTargetNames =
-    let
-      groupTargets =
-        if isServer then
-          [ "gitea" ] ++ cfg.hosts.servers
-        else if isWorkstation then
-          [ "gitea" ] ++ cfg.hosts.servers ++ cfg.hosts.workstations
-        else
-          [ "gitea" ];
-    in
-    filter (name: name != currentHost) (targetNamesIn groupTargets);
-
-  isWorkstation = elem currentHost cfg.hosts.workstations;
 
   hostKeySecret = type: "ssh-host-${type}-key";
-  user = config.user.name;
+  hostKeyTypes = [
-
+    "ed25519"
-  inherit (lib)
+    "rsa"
-    concatLists
+  ];
-    concatStringsSep
-    elem
-    filter
-    genAttrs
-    hasAttr
-    imap0
-    listToAttrs
-    mapAttrs
-    mapAttrsToList
-    mkIf
-    mkMerge
-    mkOption
-    nameValuePair
-    optional
-    optionalAttrs
-    types
-    unique
-    ;
-
   userKeySecret = "ssh-user-ed25519-key";
 
 in
 {
   options.modules.network.ssh = {
-    enable = lib.mkEnableOption "the OpenSSH daemon, with host keys restored from secrets";
+    enable = lib.mkEnableOption "the OpenSSH daemon";
 
-    hosts = {
+    hostKeys.restore = lib.mkOption {
-      servers = mkOption {
+      type = lib.types.bool;
-        type = types.listOf types.str;
-        default = [ "pikachu" ];
-        description = ''
-          Hosts that serve durable services.
-          They admit workstation keys and server keys, and they receive aliases for other servers and the forge.
-        '';
-      };
-
-      workstations = mkOption {
-        type = types.listOf types.str;
-        default = [
-          "neogaia"
-          "zeus"
-        ];
-        description = ''
-          Hosts the operator works from.
-          Their keys are admitted by every host, and they receive aliases for the whole fleet and the forge.
-        '';
-      };
-    };
-
-    targets = mkOption {
-      type = types.attrsOf targetType;
-      default = {
-        gitea = {
-          hostName = "git.alexion.dev";
-          port = 2022;
-          user = "gitea";
-          aliases = [
-            "gitea"
-            "git.alexion.dev"
-          ];
-        };
-
-        neogaia = {
-          hostName = registry.address.neogaia.self;
-          clientKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGxQ4kWsBo2OGYIPOkFe0vNEcB3yoJwAu0y9wrdQzALE alexion@neogaia";
-          hostKeys = [
-            "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJS+wp7K123+4BT6G4f954R6WyrbWveY7VlpoBUf6I5p neogaia"
-            "ssh-rsa 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 neogaia"
-          ];
-        };
-
-        zeus = {
-          hostName = registry.address.zeus.self;
-          clientKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIRBcHHuubptXCdvED/p2dR3MpjGN/AimqLasLY5984G alexion@zeus";
-          hostKeys = [
-            "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ4GBPt966LR4LpmXgiMMkepIqNIlXTUBh4zdNeek/lN root@zeus"
-            "ssh-rsa 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 root@zeus"
-          ];
-        };
-
-        pikachu = {
-          hostName = registry.address.pikachu.self;
-          clientKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINNqJIC6VRXyvrNf3n9su9KdPCikC3CjK/QrCK2reHdB alexion@pikachu";
-          hostKeys = [
-            "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKljRf4pJO+pqEqjpPz08gOYq3g1PpxvE66xVw7uMEnA root@pikachu"
-            "ssh-rsa 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 root@pikachu"
-          ];
-        };
-      };
-      description = ''
-        SSH targets known to the fleet.
-        The inventory holds connection details plus public keys used for authorization and host verification.
-      '';
-    };
-
-    extraAuthorizedKeys = mkOption {
-      type = types.listOf types.str;
-      default = [ ];
-      description = ''
-        Additional client public keys admitted by this host.
-      '';
-    };
-
-    authorizedKeys = mkOption {
-      type = types.nullOr (types.listOf types.str);
-      default = null;
-      description = ''
-        Complete override for client public keys admitted by this host.
-        Leave null to derive access from `modules.network.ssh.hosts` and `modules.network.ssh.targets`.
-      '';
-    };
-
-    extraSettings = mkOption {
-      type = types.attrsOf types.anything;
-      default = { };
-      description = ''
-        Additional OpenSSH client settings merged into the generated Home Manager configuration.
-      '';
-    };
-
-    hostKeys.restore = mkOption {
-      type = types.bool;
       default = true;
       description = ''
-        Restore the host keys from secrets rather than letting the daemon generate its own.
+        Restores host keys from secrets.
-        A machine with its own identity keeps its fingerprint across a reimage by restoring committed keys.
+        Preserves the fingerprint across reimages.
-        A guest carries no host identity, so it turns this off and presents a self-generated key instead.
+        Guests disable this option and generate their own host keys.
       '';
     };
 
-    hostKeys.sopsFile = mkOption {
+    hostKeys.sopsFile = lib.mkOption {
-      type = types.nullOr types.path;
+      type = lib.types.nullOr lib.types.path;
       default = null;
       description = ''
-        Encrypted file holding this host's SSH host private keys, one entry per key type, named `ssh-host-<type>-key`.
+        Sets encrypted file that contains host private keys.
-        Required when `restore` is on.
+        Names each secret `ssh-host-<type>-key`.
+        Requires a value when `restore` is enabled.
       '';
     };
 
-    hostKeys.types = mkOption {
+    userKey.sopsFile = lib.mkOption {
-      type = types.listOf types.str;
+      type = lib.types.nullOr lib.types.path;
-      default = [
-        "ed25519"
-        "rsa"
-      ];
-      description = ''
-        Key types to restore, naming both the entries read from the encrypted file and the algorithms the daemon offers.
-      '';
-    };
-
-    userKey.sopsFile = mkOption {
-      type = types.nullOr types.path;
       default = null;
       description = ''
-        Encrypted file holding this machine's SSH client private key, under the entry `ssh-user-ed25519-key`.
+        Sets encrypted file that contains the SSH client private key.
-        Left unset on a machine that authenticates to no remote server, such as a guest.
+        Names the secret `ssh-user-ed25519-key`.
+        Guests leave this unset because they do not authenticate to remote servers.
       '';
     };
   };
 
-  config = mkIf cfg.enable (mkMerge [
+  config = lib.mkIf cfg.enable (
-    {
+    lib.mkMerge [
-      services.openssh.enable = true;
+      {
+        services.openssh.enable = true;
 
-      users.users.${user}.openssh.authorizedKeys.keys =
+        users.users.${user}.openssh.authorizedKeys.keys = defaultAuthorizedKeys;
-        if cfg.authorizedKeys != null then
-          cfg.authorizedKeys
-        else
-          defaultAuthorizedKeys ++ cfg.extraAuthorizedKeys;
 
-      programs.ssh.knownHosts = knownHosts;
+        programs.ssh.knownHosts = knownHosts;
 
-      home-manager.users.${user}.programs.ssh = {
+        home-manager.users.${user}.programs.ssh = {
-        enable = true;
+          enable = true;
-        enableDefaultConfig = false;
+          enableDefaultConfig = false;
-        settings =
+          settings = lib.mapAttrs (name: _: sshSettingsFor name) (
-          mapAttrs (name: _: sshSettingsFor name) (genAttrs outboundTargetNames (name: name))
+            lib.genAttrs outboundTargetNames (name: name)
-          // cfg.extraSettings;
+          );
-      };
+        };
-    }
+      }
 
-    (mkIf cfg.hostKeys.restore {
+      (lib.mkIf cfg.hostKeys.restore {
-      assertions = [
+        assertions = [
-        {
+          {
-          assertion = cfg.hostKeys.sopsFile != null;
+            assertion = cfg.hostKeys.sopsFile != null;
-          message = "modules.network.ssh.hostKeys.restore requires modules.network.ssh.hostKeys.sopsFile to name the encrypted host keys.";
+            message = "Set `modules.network.ssh.hostKeys.sopsFile` when host-key restoration is enabled.";
-        }
+          }
-      ];
+        ];
 
-      sops.secrets = genAttrs (map hostKeySecret cfg.hostKeys.types) (_: {
+        sops.secrets = lib.genAttrs (map hostKeySecret hostKeyTypes) (_: {
-        inherit (cfg.hostKeys) sopsFile;
+          inherit (cfg.hostKeys) sopsFile;
-        mode = "0400";
+          mode = "0400";
-        restartUnits = [ "sshd.service" ];
+          restartUnits = [ "sshd.service" ];
-      });
+        });
 
-      services.openssh.hostKeys = [ ];
+        services.openssh.hostKeys = [ ];
-      services.openssh.extraConfig = concatStringsSep "" (
+        services.openssh.extraConfig = lib.concatStringsSep "" (
-        map (type: "HostKey ${config.sops.secrets.${hostKeySecret type}.path}\n") cfg.hostKeys.types
+          map (type: "HostKey ${config.sops.secrets.${hostKeySecret type}.path}\n") hostKeyTypes
-      );
+        );
-    })
+      })
 
-    (mkIf (cfg.userKey.sopsFile != null) {
+      (lib.mkIf (cfg.userKey.sopsFile != null) {
-      sops.secrets.${userKeySecret} = {
+        sops.secrets.${userKeySecret} = {
-        inherit (cfg.userKey) sopsFile;
+          inherit (cfg.userKey) sopsFile;
-        mode = "0400";
+          mode = "0400";
-        owner = user;
+          owner = user;
-      };
+        };
 
-      home-manager.users.${user}.programs.ssh.settings."*".IdentityFile =
+        home-manager.users.${user}.programs.ssh.settings."*" = {
-        config.sops.secrets.${userKeySecret}.path;
+          IdentityFile = config.sops.secrets.${userKeySecret}.path;
-    })
+          IdentitiesOnly = true;
-  ]);
+        };
+      })
+    ]
+  );
 }

configs/nixos/modules/network/vlans.nix

@@ -4,24 +4,17 @@
   util,
   ...
 }:
-# The host networking foundation: per-VLAN bridges over a tagged trunk.
+# Configures bridges for tagged VLANs on a physical interface that uses DHCP.
 let
-  cfg = config.modules.network.vlans; # NOLINT(let_order)
+  cfg = config.modules.network.vlans;
-
-  inherit (util) bridgeName;
-
-  vlanName = id: "${cfg.trunk}.${toString id}";
 in
 {
   options.modules.network.vlans = {
-    enable = lib.mkEnableOption "host VLAN bridges over a tagged trunk";
+    interface = lib.mkOption {
-
-    trunk = lib.mkOption {
       type = lib.types.str;
       example = "enp1s0";
       description = ''
-        Physical interface that carries 802.1Q-tagged traffic for every VLAN.
+        Names the physical interface that carries untagged DHCP traffic and tagged VLANs.
-        Each declared VLAN attaches to its own bridge.
       '';
     };
 
@@ -34,67 +27,37 @@ in
         30
       ];
       description = ''
-        Tagged VLAN ids to materialize.
+        Creates bridges for the specified tagged VLAN IDs.
-        Each id N creates one bridge named `br-vlanN`.
+
+        VLAN ID N creates bridge `br-vlanN`.
       '';
     };
-
-    management = {
-      vlan = lib.mkOption {
-        type = lib.types.nullOr (lib.types.ints.between 1 4094);
-        default = null;
-        description = ''
-          VLAN whose bridge carries the host's own management address.
-          The value must be one of `ids`.
-          Left null, the host takes no address on any bridge.
-        '';
-      };
-
-      address = lib.mkOption {
-        type = lib.types.nullOr lib.types.str;
-        default = null;
-        example = "10.0.10.2/24";
-        description = ''
-          Host static management address in CIDR form.
-          Left null, the host takes its management address by DHCP.
-        '';
-      };
-    };
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf (cfg.ids != [ ]) {
-    assertions = [
+    networking = {
-      {
+      useDHCP = false;
-        assertion = cfg.management.vlan == null || lib.elem cfg.management.vlan cfg.ids;
+      networkmanager.unmanaged = [
-        message = "modules.network.vlans.management.vlan (${toString cfg.management.vlan}) must name one of modules.network.vlans.ids.";
+        "interface-name:${cfg.interface}"
-      }
+      ]
-      {
+      ++ map (id: "interface-name:${util.bridgeName id}") cfg.ids
-        assertion = cfg.management.address == null || cfg.management.vlan != null;
+      ++ map (id: "interface-name:vlan${toString id}") cfg.ids;
-        message = "modules.network.vlans.management.address needs modules.network.vlans.management.vlan to say which bridge carries it.";
+    };
-      }
-    ];
-
-    # networkd owns these interfaces so NetworkManager does not contend for them.
-    networking.networkmanager.unmanaged = [
-      "interface-name:${cfg.trunk}"
-    ]
-    ++ map (id: "interface-name:${bridgeName id}") cfg.ids
-    ++ map (id: "interface-name:${vlanName id}") cfg.ids;
 
     systemd.network = {
       enable = true;
 
       netdevs = lib.mkMerge (
         map (id: {
-          "40-${bridgeName id}" = {
+          "40-${util.bridgeName id}" = {
             netdevConfig = {
-              Name = bridgeName id;
+              Name = util.bridgeName id;
               Kind = "bridge";
             };
           };
-          "40-${vlanName id}" = {
+          "40-vlan${toString id}" = {
             netdevConfig = {
-              Name = vlanName id;
+              Name = "vlan${toString id}";
               Kind = "vlan";
             };
             vlanConfig.Id = id;
@@ -104,37 +67,25 @@ in
 
       networks = lib.mkMerge (
         [
-          # The trunk carries only tagged frames and takes no address.
           {
-            "30-${cfg.trunk}" = {
+            "10-${cfg.interface}" = {
-              matchConfig.Name = cfg.trunk;
+              matchConfig.Name = cfg.interface;
-              networkConfig.LinkLocalAddressing = "no";
+              networkConfig.DHCP = "yes";
-              linkConfig.RequiredForOnline = "no";
+              vlan = map (id: "vlan${toString id}") cfg.ids;
-              vlan = map vlanName cfg.ids;
+              linkConfig.RequiredForOnline = "routable";
             };
           }
         ]
         ++ map (id: {
-          # Enslaved to its bridge, carrying no address itself.
+          "40-vlan${toString id}" = {
-          "40-${vlanName id}" = {
+            matchConfig.Name = "vlan${toString id}";
-            matchConfig.Name = vlanName id;
+            networkConfig.Bridge = util.bridgeName id;
-            networkConfig.Bridge = bridgeName id;
+            linkConfig.RequiredForOnline = "no";
+          };
+          "40-${util.bridgeName id}" = {
+            matchConfig.Name = util.bridgeName id;
             linkConfig.RequiredForOnline = "no";
           };
-          # The management bridge carries the host address.
-          # Other bridges provide L2 segments for guests.
-          "40-${bridgeName id}" = lib.mkMerge [
-            {
-              matchConfig.Name = bridgeName id;
-              linkConfig.RequiredForOnline = "no";
-            }
-            (lib.mkIf (cfg.management.vlan == id) (
-              if cfg.management.address == null then
-                { networkConfig.DHCP = "yes"; }
-              else
-                { address = [ cfg.management.address ]; }
-            ))
-          ];
         }) cfg.ids
       );
     };

configs/nixos/modules/network/vpn-client.nix

@@ -1,10 +1,34 @@
 {
   config,
   lib,
+  pkgs,
+  util,
   ...
 }:
 let
-  cfg = config.modules.network.vpn-client; # NOLINT(let_order)
+  cfg = config.modules.network.vpn-client;
+
+  vpnIcon = util.glyph [
+    "db83"
+    "dc9d"
+  ];
+
+  vpnStatus = pkgs.writeShellScript "waybar-vpn-status" ''
+    interface=${lib.escapeShellArg cfg.interface}
+
+    if ! ${lib.getExe' pkgs.iproute2 "ip"} link show dev "$interface" >/dev/null 2>&1; then
+      printf '{"text":"","class":"idle"}\n'
+      exit 0
+    fi
+
+    ipaddr=$(${lib.getExe' pkgs.iproute2 "ip"} -4 -o addr show dev "$interface" | ${lib.getExe' pkgs.gawk "awk"} '{ print $4; exit }')
+
+    ${lib.getExe pkgs.jq} -cn \
+      --arg text "${vpnIcon}" \
+      --arg tooltip "VPN $interface: ''${ipaddr:-no IPv4}" \
+      --arg class "active" \
+      '{ text: $text, tooltip: $tooltip, class: $class }'
+  '';
 in
 {
   options.modules.network.vpn-client = {
@@ -13,61 +37,31 @@ in
     interface = lib.mkOption {
       type = lib.types.str;
       default = "wg-home";
-      description = "WireGuard interface name.";
+      description = "Names the WireGuard interface.";
     };
 
     address = lib.mkOption {
       type = lib.types.str;
       example = "10.23.100.3/32";
-      description = "Client tunnel address in CIDR notation.";
+      description = "Sets the client tunnel address in CIDR notation.";
-    };
-
-    privateKeySecret = lib.mkOption {
-      type = lib.types.str;
-      default = "wireguard-home-private-key";
-      description = "SOPS secret containing the WireGuard client private key.";
-    };
-
-    autoStart = lib.mkOption {
-      type = lib.types.bool;
-      default = false;
-      description = "Whether to start the VPN tunnel during boot.";
-    };
-
-    mtu = lib.mkOption {
-      type = lib.types.nullOr lib.types.int;
-      default = 1280;
-      description = "Tunnel MTU, or null to use the WireGuard default.";
     };
 
     sopsFile = lib.mkOption {
       type = lib.types.nullOr lib.types.path;
       default = null;
-      description = "Encrypted secrets file that contains privateKeySecret.";
+      description = "Names the encrypted file that contains the WireGuard private key.";
     };
 
     peer = {
       publicKey = lib.mkOption {
         type = lib.types.str;
-        description = "WireGuard public key for the remote peer.";
+        description = "Sets the WireGuard public key for the remote peer.";
       };
 
       endpoint = lib.mkOption {
         type = lib.types.str;
         example = "203.0.113.10:51820";
-        description = "WireGuard endpoint for the remote peer.";
+        description = "Sets the WireGuard endpoint for the remote peer.";
-      };
-
-      allowedIPs = lib.mkOption {
-        type = lib.types.listOf lib.types.str;
-        default = [ "10.23.0.0/16" ];
-        description = "Routes to send through the VPN tunnel.";
-      };
-
-      persistentKeepalive = lib.mkOption {
-        type = lib.types.nullOr lib.types.int;
-        default = 25;
-        description = "Persistent keepalive interval in seconds, or null to disable it.";
       };
     };
   };
@@ -76,30 +70,39 @@ in
     assertions = [
       {
         assertion = cfg.sopsFile != null;
-        message = "modules.network.vpn-client.sopsFile must name the encrypted secrets file containing the WireGuard private key.";
+        message = "Set modules.network.vpn-client.sopsFile when the VPN client is enabled.";
       }
     ];
 
-    sops.secrets.${cfg.privateKeySecret}.sopsFile = cfg.sopsFile;
+    sops.secrets.wireguard-home-private-key.sopsFile = cfg.sopsFile;
 
-    systemd.targets."wireguard-${cfg.interface}" = lib.mkIf (!cfg.autoStart) {
+    registry.shell-shortcut.${config.networking.hostName} = {
-      wantedBy = lib.mkForce [ ];
+      vpn-on = "sudo systemctl start wireguard-${cfg.interface}.target";
+      vpn-off = "sudo systemctl stop 'wireguard-${cfg.interface}*.service' wireguard-${cfg.interface}.target";
     };
 
+    registry.waybar.${config.networking.hostName}."custom/vpn" = {
+      order = 50;
+      settings = {
+        return-type = "json";
+        exec = "${vpnStatus}";
+        interval = 5;
+      };
+    };
+
+    systemd.targets."wireguard-${cfg.interface}".wantedBy = lib.mkForce [ ];
+
     networking.wireguard.interfaces.${cfg.interface} = {
       ips = [ cfg.address ];
-      inherit (cfg) mtu;
+      mtu = 1280;
-      privateKeyFile = config.sops.secrets.${cfg.privateKeySecret}.path;
+      privateKeyFile = config.sops.secrets.wireguard-home-private-key.path;
 
       peers = [
-        (
+        {
-          {
+          inherit (cfg.peer) publicKey endpoint;
-            inherit (cfg.peer) publicKey endpoint allowedIPs;
+          allowedIPs = [ "10.23.0.0/16" ];
-          }
+          persistentKeepalive = 25;
-          // lib.optionalAttrs (cfg.peer.persistentKeepalive != null) {
+        }
-            inherit (cfg.peer) persistentKeepalive;
-          }
-        )
       ];
     };
   };

configs/nixos/modules/services/actualbudget.nix

@@ -1,62 +0,0 @@
-{
-  config,
-  lib,
-  ...
-}:
-let
-  cfg = config.modules.services.actualbudget; # NOLINT(let_order)
-in
-{
-  options.modules.services.actualbudget = {
-    enable = lib.mkEnableOption "Actual Budget";
-
-    port = lib.mkOption {
-      type = lib.types.port;
-      default = 5006;
-      description = "Port Actual Budget listens on.";
-    };
-
-    dataDir = lib.mkOption {
-      type = lib.types.str;
-      default = "/data";
-      description = "Directory where Actual Budget stores server and user files.";
-    };
-
-    user = lib.mkOption {
-      type = lib.types.str;
-      default = "actual";
-      description = "User account that runs Actual Budget.";
-    };
-
-    group = lib.mkOption {
-      type = lib.types.str;
-      default = "storage";
-      description = "Group account that owns Actual Budget's writable state.";
-    };
-
-  };
-
-  config = lib.mkMerge [
-    {
-      registry."stable-uid".${config.networking.hostName}.actualbudget = 20001;
-    }
-
-    (lib.mkIf cfg.enable {
-      users.users.${cfg.user} = {
-        isSystemUser = true;
-        uid = config.registry."stable-uid".${config.networking.hostName}.actualbudget;
-        inherit (cfg) group;
-      };
-
-      services.actual = {
-        enable = true;
-        openFirewall = true;
-        inherit (cfg) user;
-        inherit (cfg) group;
-        settings = {
-          inherit (cfg) port dataDir;
-        };
-      };
-    })
-  ];
-}

configs/nixos/modules/services/copyparty.nix

@@ -2,147 +2,135 @@
   config,
   lib,
   pkgs,
+  util,
   ...
 }:
 let
-  cfg = config.modules.services.copyparty; # NOLINT(let_order)
+  cfg = config.modules.services.copyparty;
 
-  volumeType = lib.types.submodule {
+  accountName = config.user.name;
-    options = {
-      path = lib.mkOption {
-        type = lib.types.str;
-        description = "Filesystem path served by this volume.";
-      };
 
-      access = lib.mkOption {
+  serviceGroup = "storage";
-        type = lib.types.attrsOf (lib.types.listOf lib.types.str);
-        default = { };
-        example = {
-          A = [ "alexion" ];
-        };
-        description = "Copyparty access map from permission string to account names.";
-      };
 
-      readOnly = lib.mkOption {
+  serviceStateDir = "/var/lib/copyparty";
-        type = lib.types.bool;
-        default = false;
-        description = "Serve this volume read-only.";
-      };
 
-      flags = lib.mkOption {
+  serviceUser = "copyparty";
-        type = lib.types.listOf lib.types.str;
+
-        default = [ ];
+  writableVolumes = lib.filter (volume: !volume.readOnly) (lib.attrValues cfg.volumes);
-        example = [ "dthumb" ];
+
-        description = "Copyparty volume flags.";
+  port = 3923;
-      };
+  defaultAccess = {
-    };
+    A = [ accountName ];
   };
 
-  configScript = pkgs.writeShellScript "copyparty-config" ''
+  defaultWritableFlags = {
-    set -eu
+    d2d = true;
+    d2t = true;
+    dthumb = true;
+  };
 
-    umask 077
+  credentialHash = builtins.substring 0 16 (builtins.hashString "sha256" accountName);
-    password="$(${pkgs.coreutils}/bin/tr -d '\n' < "$CREDENTIALS_DIRECTORY/password")"
 
-    cat > /run/copyparty/copyparty.conf <<EOF
+  credentialName = "password-${credentialHash}";
-    [global]
-      p: ${toString cfg.port}
-      usernames
-      http-only
-      no-crt
-      no-thumb
-      no-snap
-      no-rescan
-      ses-db: ${cfg.stateDir}/sessions.db
-      chpw-db: ${cfg.stateDir}/chpw.json
-      shr-db: ${cfg.stateDir}/shares.db
-    ${renderedReverseProxy}
-    [accounts]
-      ${cfg.accountName}: $password
 
-    ${renderedVolumes}
+  passwordPlaceholder = "@COPYPARTY_PASSWORD_${credentialHash}@";
-    EOF
-  '';
-  renderAccess = permission: accounts: "    ${permission}: ${lib.concatStringsSep ", " accounts}";
 
-  hasFlag =
+  globalSettings = {
-    name: flags: lib.any (flag: lib.hasPrefix "${name}:" flag || lib.hasPrefix "${name}=" flag) flags;
+    i = "0.0.0.0";
+    usernames = true;
+    "http-only" = true;
+    "no-crt" = true;
+    "no-thumb" = true;
+    "no-snap" = true;
+    "no-rescan" = true;
+    "ses-db" = "${serviceStateDir}/sessions.db";
+    "chpw-db" = "${serviceStateDir}/chpw.json";
+    "shr-db" = "${serviceStateDir}/shares.db";
+  }
+  // lib.optionalAttrs cfg.reverseProxy.enable {
+    rproxy = 1;
+    "xff-hdr" = "x-forwarded-for";
+  };
 
-  defaultPermissionFlags =
+  globalExtraConfig = lib.optionalString cfg.reverseProxy.enable (
+    lib.concatMapStringsSep "\n" (source: "xff-src: ${source}") cfg.reverseProxy.trustedSources
+  );
+
+  volumeFlags =
     flags:
-    lib.optionals (!(hasFlag "chmod_d" flags)) [ "chmod_d: 2770" ]
+    lib.optionalAttrs (flags != { }) (
-    ++ lib.optionals (!(hasFlag "chmod_f" flags)) [ "chmod_f: 660" ];
+      {
+        chmod_d = "2770";
+        chmod_f = "660";
+      }
+      // flags
+    );
 
-  renderFlags =
+  renderedVolumes = lib.mapAttrs (_urlPath: volume: {
-    flags: lib.concatMapStringsSep "\n" (flag: "    ${flag}") (flags ++ defaultPermissionFlags flags);
+    inherit (volume) path;
+    access = if volume.readOnly then { r = [ accountName ]; } else defaultAccess // volume.access;
+    flags = volumeFlags (lib.optionalAttrs (!volume.readOnly) defaultWritableFlags // volume.flags);
+  }) cfg.volumes;
 
-  renderVolume = urlPath: volume: ''
+  configText = util.formats.copyparty.render {
-    [${urlPath}]
+    inherit globalExtraConfig;
-      ${volume.path}
+    accounts.${accountName} = passwordPlaceholder;
-      accs:
+    global = globalSettings;
-    ${lib.concatStringsSep "\n" (lib.mapAttrsToList renderAccess volume.access)}
+    volumes = renderedVolumes;
-    ${lib.optionalString (volume.flags != [ ]) ''
+  };
-        flags:
+
-      ${renderFlags volume.flags}
+  configFile = pkgs.writeText "copyparty.conf" configText;
-    ''}
+
+  replacePassword = ''
+    ${lib.getExe pkgs.replace-secret} ${lib.escapeShellArg passwordPlaceholder} "$CREDENTIALS_DIRECTORY/${credentialName}" /run/copyparty/copyparty.conf
   '';
-
-  renderTrustedSource = source: "  xff-src: ${source}";
-
-  renderedReverseProxy = lib.optionalString cfg.reverseProxy.enable ''
-      rproxy: 1
-      xff-hdr: x-forwarded-for
-    ${lib.concatStringsSep "\n" (map renderTrustedSource cfg.reverseProxy.trustedSources)}
-  '';
-
-  renderedVolumes = lib.concatStringsSep "\n" (lib.mapAttrsToList renderVolume cfg.volumes);
-
 in
 {
   options.modules.services.copyparty = {
     enable = lib.mkEnableOption "Copyparty";
 
-    package = lib.mkPackageOption pkgs "copyparty-min" { };
-
-    port = lib.mkOption {
-      type = lib.types.port;
-      default = 3923;
-      description = "Port Copyparty listens on.";
-    };
-
-    user = lib.mkOption {
-      type = lib.types.str;
-      default = "copyparty";
-      description = "User account that runs Copyparty.";
-    };
-
-    group = lib.mkOption {
-      type = lib.types.str;
-      default = "storage";
-      description = "Group account that owns Copyparty's writable state and served files.";
-    };
-
-    accountName = lib.mkOption {
-      type = lib.types.str;
-      default = "alexion";
-      description = "Copyparty account name configured for password authentication.";
-    };
-
     passwordFile = lib.mkOption {
-      type = lib.types.path;
-      description = "Runtime file containing the Copyparty account password.";
-    };
-
-    stateDir = lib.mkOption {
       type = lib.types.str;
-      default = "/var/lib/copyparty";
+      description = "Sets the runtime file that contains the Copyparty account password.";
-      description = "Directory where Copyparty stores service state.";
     };
 
     volumes = lib.mkOption {
-      type = lib.types.attrsOf volumeType;
+      type = lib.types.attrsOf (
+        lib.types.submodule {
+          options = {
+            path = lib.mkOption {
+              type = lib.types.externalPath;
+              description = "Sets the filesystem path served by this volume.";
+            };
+
+            access = lib.mkOption {
+              type = lib.types.attrsOf (lib.types.listOf lib.types.str);
+              default = { };
+              example = {
+                A = [ "alexion" ];
+              };
+              description = "Maps Copyparty permission strings to account names.";
+            };
+
+            readOnly = lib.mkOption {
+              type = lib.types.bool;
+              default = false;
+              description = "Serves this volume read-only.";
+            };
+
+            flags = lib.mkOption {
+              type = lib.types.attrs;
+              default = { };
+              example = {
+                dthumb = true;
+              };
+              description = "Sets Copyparty volume flags.";
+            };
+          };
+        }
+      );
       default = { };
-      description = "Copyparty volumes keyed by their URL path.";
+      description = "Defines Copyparty volumes by URL path.";
     };
 
     reverseProxy = {
@@ -151,7 +139,7 @@ in
       trustedSources = lib.mkOption {
         type = lib.types.listOf lib.types.str;
         default = [ ];
-        description = "IP ranges that may supply Copyparty's forwarded client IP header.";
+        description = "Lists proxy sources that can set Copyparty's forwarded client IP header.";
       };
     };
   };
@@ -173,46 +161,49 @@ in
         }
       ];
 
-      users.users.${cfg.user} = {
+      users.users.${serviceUser} = {
         isSystemUser = true;
         uid = config.registry."stable-uid".${config.networking.hostName}.copyparty;
-        inherit (cfg) group;
+        group = serviceGroup;
-        home = cfg.stateDir;
+        home = serviceStateDir;
       };
 
       systemd.services.copyparty = {
         description = "Copyparty file server";
         after = [ "network.target" ];
         wantedBy = [ "multi-user.target" ];
+        preStart = ''
+          ${lib.getExe' pkgs.coreutils "install"} -m 600 ${configFile} /run/copyparty/copyparty.conf
+          ${replacePassword}
+        '';
         serviceConfig = {
           ReloadSignal = "SIGUSR1";
           Type = "simple";
-          User = cfg.user;
+          User = serviceUser;
-          Group = cfg.group;
+          Group = serviceGroup;
-          WorkingDirectory = cfg.stateDir;
+          WorkingDirectory = serviceStateDir;
           Environment = [
-            "HOME=${cfg.stateDir}"
+            "HOME=${serviceStateDir}"
-            "XDG_CONFIG_HOME=${cfg.stateDir}"
+            "XDG_CONFIG_HOME=${serviceStateDir}"
           ];
           StateDirectory = "copyparty";
           RuntimeDirectory = "copyparty";
           RuntimeDirectoryMode = "0700";
-          LoadCredential = [ "password:${cfg.passwordFile}" ];
+          LoadCredential = [ "${credentialName}:${cfg.passwordFile}" ];
-          ExecStartPre = configScript;
+          ExecStart = "${lib.getExe pkgs.copyparty-min} -c /run/copyparty/copyparty.conf";
-          ExecStart = "${lib.getExe cfg.package} -c /run/copyparty/copyparty.conf";
           Restart = "on-failure";
           NoNewPrivileges = true;
           PrivateTmp = true;
           ProtectSystem = "strict";
           ProtectHome = true;
           ReadWritePaths = [
-            cfg.stateDir
+            serviceStateDir
           ]
-          ++ map (volume: volume.path) (lib.filter (volume: !volume.readOnly) (lib.attrValues cfg.volumes));
+          ++ map (volume: volume.path) writableVolumes;
         };
       };
 
-      networking.firewall.allowedTCPPorts = [ cfg.port ];
+      networking.firewall.allowedTCPPorts = [ port ];
     })
   ];
 }

configs/nixos/modules/services/games/palworld.nix

@@ -92,33 +92,33 @@
       startScript = pkgs.writeShellScript "palworld-start" ''
         set -eu
 
-        ${pkgs.coreutils}/bin/install -d \
+        ${lib.getExe' pkgs.coreutils "install"} -d \
           -m 0770 \
           ${lib.escapeShellArg service.stateDir} \
           ${lib.escapeShellArg (builtins.dirOf savedDir)}
 
         if [ -L ${lib.escapeShellArg savedDir} ]; then
-          current_target="$(${pkgs.coreutils}/bin/readlink ${lib.escapeShellArg savedDir})"
+          current_target="$(${lib.getExe' pkgs.coreutils "readlink"} ${lib.escapeShellArg savedDir})"
           if [ "$current_target" != ${lib.escapeShellArg service.stateDir} ]; then
-            ${pkgs.coreutils}/bin/rm ${lib.escapeShellArg savedDir}
+            ${lib.getExe' pkgs.coreutils "rm"} ${lib.escapeShellArg savedDir}
           fi
         fi
 
         if [ -d ${lib.escapeShellArg savedDir} ] && [ ! -L ${lib.escapeShellArg savedDir} ]; then
-          if ${pkgs.findutils}/bin/find ${lib.escapeShellArg service.stateDir} -mindepth 1 -maxdepth 1 | ${pkgs.gnugrep}/bin/grep -q .; then
+          if ${lib.getExe' pkgs.findutils "find"} ${lib.escapeShellArg service.stateDir} -mindepth 1 -maxdepth 1 | ${lib.getExe' pkgs.gnugrep "grep"} -q .; then
-            ${pkgs.coreutils}/bin/rm -rf ${lib.escapeShellArg savedDir}
+            ${lib.getExe' pkgs.coreutils "rm"} -rf ${lib.escapeShellArg savedDir}
           else
-            ${pkgs.coreutils}/bin/cp -a ${lib.escapeShellArg savedDir}/. ${lib.escapeShellArg service.stateDir}/
+            ${lib.getExe' pkgs.coreutils "cp"} -a ${lib.escapeShellArg savedDir}/. ${lib.escapeShellArg service.stateDir}/
-            ${pkgs.coreutils}/bin/rm -rf ${lib.escapeShellArg savedDir}
+            ${lib.getExe' pkgs.coreutils "rm"} -rf ${lib.escapeShellArg savedDir}
           fi
         fi
 
         if [ ! -e ${lib.escapeShellArg savedDir} ]; then
-          ${pkgs.coreutils}/bin/ln -s ${lib.escapeShellArg service.stateDir} ${lib.escapeShellArg savedDir}
+          ${lib.getExe' pkgs.coreutils "ln"} -s ${lib.escapeShellArg service.stateDir} ${lib.escapeShellArg savedDir}
         fi
 
-        password="$(${pkgs.coreutils}/bin/tr -d '\n' < ${lib.escapeShellArg service.passwordFile})"
+        password="$(${lib.getExe' pkgs.coreutils "tr"} -d '\n' < ${lib.escapeShellArg service.passwordFile})"
-        admin_password="$(${pkgs.coreutils}/bin/tr -d '\n' < ${lib.escapeShellArg service.adminPasswordFile})"
+        admin_password="$(${lib.getExe' pkgs.coreutils "tr"} -d '\n' < ${lib.escapeShellArg service.adminPasswordFile})"
 
         exec ./PalServer.sh \
           "$@" \
@@ -145,9 +145,12 @@
         ]
         ++ lib.optional service.publicLobby "-publiclobby"
         ++ lib.optionals (service.publicIP != null) [ "-publicip=${service.publicIP}" ]
-        ++ lib.optional service.rcon.enable "-rcon";
+        ++ lib.optionals service.rcon.enable [
+          "-rcon"
+          "-RCONPort=${toString service.rcon.port}"
+        ];
         udpPorts = [ service.port ];
-        tcpPorts = [ service.port ];
+        tcpPorts = lib.optional service.rcon.enable service.rcon.port;
       };
     }
   );

configs/nixos/modules/services/games/valheim.nix

@@ -51,7 +51,7 @@
       startScript = pkgs.writeShellScript "valheim-start" ''
         set -eu
 
-        password="$(${pkgs.coreutils}/bin/tr -d '\n' < ${lib.escapeShellArg service.passwordFile})"
+        password="$(${lib.getExe' pkgs.coreutils "tr"} -d '\n' < ${lib.escapeShellArg service.passwordFile})"
         exec ./valheim_server.x86_64 "$@" -password "$password"
       '';
     in

configs/nixos/modules/services/homepage.nix

@@ -5,7 +5,7 @@
   ...
 }:
 let
-  cfg = config.modules.services.homepage; # NOLINT(let_order)
+  cfg = config.modules.services.homepage;
 
   derivedAllowedHosts = lib.unique (
     lib.optional (selfRoute != null) selfRoute.domain
@@ -71,12 +71,12 @@ let
     if item.homepage.href != null then
       item.homepage.href
     else if (item.composite.route or null) != null then
-      if item.composite.route.port != null then
+      if item.composite.route.protocol == "https" then
         "https://${item.composite.route.domain}"
-      else if item.composite.route.http.port != null then
+      else if item.composite.route.protocol == "http" then
         "http://${item.composite.route.domain}"
       else
-        throw "${mkRegistryPath "homepage" item.host item.entry} needs href or a matching TCP route entry"
+        throw "${mkRegistryPath "homepage" item.host item.entry} needs href or a matching HTTP route entry"
     else
       throw "${mkRegistryPath "homepage" item.host item.entry} needs href or a matching route entry";
 
@@ -111,7 +111,8 @@ let
     let
       sectionOrder = sectionOrderByTab.${tab} or [ ];
     in
-    sectionOrder ++ lib.filter (section: !lib.elem section sectionOrder) (lib.attrNames sections);
+    lib.filter (section: lib.hasAttr section sections) sectionOrder
+    ++ lib.filter (section: !lib.elem section sectionOrder) (lib.attrNames sections);
 
 in
 {

configs/nixos/modules/services/navidrome.nix

@@ -4,7 +4,7 @@
   ...
 }:
 let
-  cfg = config.modules.services.navidrome; # NOLINT(let_order)
+  cfg = config.modules.services.navidrome;
 in
 {
   options.modules.services.navidrome = {

configs/nixos/modules/services/reverse-proxy.nix

@@ -5,13 +5,14 @@
   ...
 }:
 let
-  cfg = config.modules.services.reverse-proxy; # NOLINT(let_order)
 
   generatedUdpStreams = lib.concatLists (
     lib.mapAttrsToList (
       host: routes:
       lib.concatLists (
-        lib.mapAttrsToList (entry: route: map (mkUdpStream host entry) route.udp.ports) routes
+        lib.mapAttrsToList (
+          entry: route: lib.optionals (route.protocol == "udp") (map (mkUdpStream host entry) route.ports)
+        ) routes
       )
     ) registry.route
   );
@@ -39,43 +40,14 @@ let
       proxy_pass ${stream.address}:${toString stream.port};
     }
   '') generatedUdpStreams;
-  generatedVirtualHosts =
+  generatedVirtualHosts = lib.listToAttrs generatedVirtualHostList;
-    if duplicateDomainMessages != [ ] then
-      throw (builtins.head duplicateDomainMessages)
-    else
-      lib.listToAttrs generatedVirtualHostList;
 
-  duplicateDomainMessages = lib.concatLists (
+  # Route registry validation already requires unique domains.
-    lib.mapAttrsToList (
+  generatedVirtualHostList = lib.concatLists (
-      domain: virtualHosts:
-      if lib.length virtualHosts > 1 then
-        [
-          "duplicate route domain ${domain} in ${
-            lib.concatMapStringsSep " and " (
-              virtualHost: mkRegistryPath virtualHost.registryName virtualHost.host virtualHost.entry
-            ) virtualHosts
-          }"
-        ]
-      else
-        [ ]
-    ) virtualHostsByDomain
-  );
-
-  virtualHostsByDomain = lib.foldl' (
-    acc: virtualHost:
-    acc
-    // {
-      ${virtualHost.name} = (acc.${virtualHost.name} or [ ]) ++ [ virtualHost ];
-    }
-  ) { } generatedVirtualHostList;
-
-  generatedVirtualHostList = generatedHttpsVirtualHostList ++ generatedHttpVirtualHostList;
-
-  generatedHttpsVirtualHostList = lib.concatLists (
     lib.mapAttrsToList (
       host: routes:
-      lib.mapAttrsToList (entry: _route: mkVirtualHost host entry "https") (
+      lib.mapAttrsToList (entry: route: mkVirtualHost host entry route.protocol) (
-        lib.filterAttrs (_entry: route: route.port != null) routes
+        lib.filterAttrs (_entry: route: route.protocol != "udp") routes
       )
     ) registry.route
   );
@@ -89,30 +61,25 @@ let
           or (throw "no matching entry in registry.address for ${mkRegistryPath "route" host entry}");
       compositeEntry = registry.join host entry;
       inherit (compositeEntry) route;
-      port = if isHttp then route.http.port else route.port;
+      inherit (route) port;
     in
     {
-      inherit host entry;
-      registryName = "route";
       name = route.domain;
       value = {
         forceSSL = !isHttp;
         enableACME = !isHttp;
-        locations."/".proxyPass = mkBackend address port;
+        extraConfig = lib.optionalString (route.clientMaxBodySize != null) ''
+          client_max_body_size ${route.clientMaxBodySize};
+        '';
+        locations."/" = {
+          proxyPass = mkBackend address port;
+          proxyWebsockets = true;
+        };
       };
     };
 
   mkBackend = address: port: "http://${address}:${toString port}";
 
-  generatedHttpVirtualHostList = lib.concatLists (
-    lib.mapAttrsToList (
-      host: routes:
-      lib.mapAttrsToList (entry: _route: mkVirtualHost host entry "http") (
-        lib.filterAttrs (_entry: route: route.http.port != null) routes
-      )
-    ) registry.route
-  );
-
   mkRegistryPath =
     registryName: host: entry:
     "registry.${registryName}.${host}.${entry}";
@@ -123,7 +90,7 @@ in
     enable = lib.mkEnableOption "the public edge reverse proxy";
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.services.reverse-proxy.enable {
     networking.firewall.allowedTCPPorts = [
       80
       443

configs/nixos/modules/services/romm.nix

@@ -0,0 +1,68 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.modules.services.romm;
+in
+{
+  options.modules.services.romm = {
+    enable = lib.mkEnableOption "RomM";
+
+    environmentFile = lib.mkOption {
+      type = lib.types.path;
+      default = "/run/secrets/romm.env";
+      readOnly = true;
+      description = "Path to RomM's environment file.";
+    };
+  };
+
+  config = lib.mkMerge [
+    {
+      registry."stable-uid".${config.networking.hostName} = {
+        romm = 20005;
+        "redis-romm" = 20006;
+      };
+    }
+
+    (lib.mkIf cfg.enable {
+      networking.firewall.allowedTCPPorts = [ 80 ];
+
+      services.romm = {
+        enable = true;
+        package = pkgs.alexion.romm;
+        group = "storage";
+        database.createLocally = true;
+        redis.createLocally = true;
+        watcher.enable = true;
+        extraEnvironment = {
+          HASHEOUS_API_ENABLED = "true";
+          PLAYMATCH_API_ENABLED = "true";
+          ROM_CONVERTO_ENABLED = "false";
+        };
+        inherit (cfg) environmentFile;
+      };
+
+      systemd.services.romm-worker.serviceConfig.ExecStart =
+        lib.mkForce "${lib.getExe' config.services.romm.package "romm-worker"} scans";
+
+      systemd.tmpfiles.settings."10-romm"."${config.services.romm.dataDir}/config/config.yml"."L+".argument =
+        toString (
+          (pkgs.formats.yaml { }).generate "romm-config.yml" {
+            emulatorjs.auto_save_sync = false;
+            filesystem.structure = {
+              default = "roms/{platform}/{game}";
+              firmware = "bios/{platform}";
+            };
+          }
+        );
+
+      users.users = {
+        romm.uid = config.registry."stable-uid".${config.networking.hostName}.romm;
+        redis-romm.uid = config.registry."stable-uid".${config.networking.hostName}."redis-romm";
+      };
+    })
+  ];
+}

configs/nixos/modules/services/steamcmd.nix

@@ -15,9 +15,9 @@
     };
 
     serviceName = lib.mkOption {
-      type = lib.types.str;
+      type = lib.types.strMatching "[a-z0-9][a-z0-9-]*";
       example = "valheim";
-      description = "Name of the systemd service that runs the game server.";
+      description = "Lowercase systemd service basename for the game server.";
     };
 
     appId = lib.mkOption {
@@ -87,7 +87,7 @@
         prepareScript = pkgs.writeShellScript "steamcmd-${service.serviceName}-prepare" ''
           set -eu
 
-          ${pkgs.coreutils}/bin/install -d \
+          ${lib.getExe' pkgs.coreutils "install"} -d \
             -o ${user} \
             -g ${group} \
             -m 0770 \
@@ -155,7 +155,7 @@
             wantedBy = lib.mkIf service.autoStart [ "multi-user.target" ];
             serviceConfig = {
               Type = "oneshot";
-              ExecStart = "${pkgs.systemd}/bin/systemctl --no-block start ${service.serviceName}.service";
+              ExecStart = "${lib.getExe' pkgs.systemd "systemctl"} --no-block start ${service.serviceName}.service";
             };
           };
 

configs/nixos/modules/shell/bazel.nix

@@ -5,15 +5,11 @@
   ...
 }:
 # Bazel for the primary user's shell environment.
-let
-  cfg = config.modules.shell.bazel; # NOLINT(let_order)
-  user = config.user.name;
-in
 {
   options.modules.shell.bazel.enable =
     lib.mkEnableOption "Bazel for the primary user's shell environment";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.bazel.enable {
-    home-manager.users.${user}.home.packages = [ pkgs.bazel ];
+    home-manager.users.${config.user.name}.home.packages = [ pkgs.bazel ];
   };
 }

configs/nixos/modules/shell/direnv/default.nix

@@ -1,26 +0,0 @@
-{
-  config,
-  lib,
-  ...
-}:
-# direnv for the primary user, configured through home-manager.
-let
-  cfg = config.modules.shell.direnv; # NOLINT(let_order)
-  user = config.user.name;
-in
-{
-  options.modules.shell.direnv.enable =
-    lib.mkEnableOption "direnv for the primary user, with nix-direnv shell caching";
-
-  config = lib.mkIf cfg.enable {
-    home-manager.users.${user}.programs.direnv = {
-      enable = true;
-      silent = true;
-
-      # nix-direnv caches the evaluated shell so re-entering a directory is instant
-      # instead of re-running `nix develop`, and adds the `use flake` stdlib helper.
-      nix-direnv.enable = true;
-      stdlib = builtins.readFile ./repo-flake.sh;
-    };
-  };
-}

configs/nixos/modules/shell/direnv/repo-flake.sh

@@ -1,33 +0,0 @@
-if declare -f use_flake >/dev/null; then
-  __dotfiles_use_flake_definition="$(declare -f use_flake)"
-  eval "${__dotfiles_use_flake_definition/use_flake/__dotfiles_nix_direnv_use_flake}"
-  unset __dotfiles_use_flake_definition
-
-  use_flake() {
-    local flake_expr="${1:-.}"
-
-    if [[ "$flake_expr" == //* ]]; then
-      local git_root
-      if ! git_root="$(git rev-parse --show-toplevel 2>/dev/null)"; then
-        log_error 'use flake // requires a Git repository'
-        return 1
-      fi
-
-      local flake_suffix="${flake_expr#//}"
-      if [[ -n "$flake_suffix" && "$flake_suffix" != \#* && "$flake_suffix" != /* ]]; then
-        flake_expr="path:${git_root}/${flake_suffix}"
-      else
-        flake_expr="path:${git_root}${flake_suffix}"
-      fi
-
-      shift
-      __dotfiles_nix_direnv_use_flake "$flake_expr" "$@"
-      return
-    fi
-
-    __dotfiles_nix_direnv_use_flake "$@"
-  }
-else
-  log_error 'nix-direnv must define use_flake before the // wrapper loads'
-  return 1
-fi

configs/nixos/modules/shell/fish/default.nix

@@ -6,13 +6,9 @@
 }:
 # fish for the primary user, configured through home-manager.
 let
-  cfg = config.modules.shell.fish; # NOLINT(let_order)
+  cfg = config.modules.shell.fish;
   commandsOf = shortcuts: lib.mapAttrs (_name: shortcut: shortcut.command) shortcuts;
   shortcuts = lib.attrByPath [ config.networking.hostName ] { } config.registry.shell-shortcut;
-  exportEnvVar = name: value: ''
-    set -gx ${name} ${lib.escapeShellArg value}
-  '';
-  envVars = lib.attrByPath [ config.networking.hostName ] { } config.registry.env-var;
   user = config.user.name;
 in
 {
@@ -106,9 +102,7 @@ in
         };
 
         # Rendered by home-manager into ~/.config/fish/config.fish.
-        interactiveShellInit = lib.concatStringsSep "\n" (
+        interactiveShellInit = builtins.readFile ./config.fish;
-          (lib.mapAttrsToList exportEnvVar envVars) ++ [ (builtins.readFile ./config.fish) ]
-        );
       };
     };
   };

configs/nixos/modules/shell/fish/functions/deploy-to.fish

@@ -80,6 +80,13 @@ else
     echo "deploy-to: $host already has the full closure for $system_path" >&2
 end
 
+echo "deploy-to: recording $system_path as the system profile on $host" >&2
+ssh -t $host sudo nix-env --profile /nix/var/nix/profiles/system --set $system_path
+or begin
+    echo "deploy-to: system profile update failed for $host" >&2
+    return $status
+end
+
 echo "deploy-to: activating $system_path on $host" >&2
 ssh -t $host sudo "$system_path/bin/switch-to-configuration" switch
 or begin

configs/nixos/modules/shell/git.nix

@@ -5,14 +5,13 @@
 }:
 # git for the primary user, configured through home-manager.
 let
-  cfg = config.modules.shell.git; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.git.enable =
     lib.mkEnableOption "git for the primary user, carrying the operator's commit identity";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.git.enable {
     home-manager.users.${user}.programs.git = {
       enable = true;
 

configs/nixos/modules/shell/gitea-axi.nix

@@ -6,14 +6,13 @@
 }:
 # gitea-axi for the primary user, installed through its own home-manager module.
 let
-  cfg = config.modules.shell.gitea-axi; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.gitea-axi.enable =
     lib.mkEnableOption "gitea-axi, an agent-ergonomic CLI for Gitea issues and pull requests";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.gitea-axi.enable {
     home-manager.sharedModules = [ inputs.gitea-axi.homeModules.default ];
     home-manager.users.${user}.programs.gitea-axi.enable = true;
   };

configs/nixos/modules/shell/herdr.nix

@@ -6,14 +6,13 @@
 }:
 # Herdr, a terminal multiplexer for coding agents.
 let
-  cfg = config.modules.shell.herdr; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.herdr.enable =
     lib.mkEnableOption "Herdr, a terminal multiplexer for coding agents";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.herdr.enable {
     registry.shell-shortcut.${config.networking.hostName}.hs = "herdr --session";
 
     home-manager.users.${user} = lib.mkMerge [

configs/nixos/modules/shell/nvim/default.nix

@@ -7,14 +7,13 @@
 }:
 # Neovim for the primary user, configured declaratively through nixvim.
 let
-  cfg = config.modules.shell.nvim; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.nvim.enable =
     lib.mkEnableOption "Neovim, configured declaratively via nixvim";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.nvim.enable {
     registry.shell-shortcut.${config.networking.hostName} = {
       vi = "nvim";
       vim = "nvim";
@@ -25,6 +24,9 @@ in
     home-manager.users.${user} = hm: {
       programs.nixvim = {
         enable = true;
+
+        # Aligns Nixvim plugins with this flake's `Nixpkgs`.
+        # `nixpkgs.useGlobalPackages` prevents Home Manager from creating a separate package set.
         nixpkgs.useGlobalPackages = true;
 
         extraPackages = with pkgs; [

configs/nixos/modules/shell/omp.nix

@@ -6,7 +6,6 @@
 }:
 # Oh My Pi, installed alongside upstream Pi as the `omp` command.
 let
-  cfg = config.modules.shell.omp; # NOLINT(let_order)
   user = config.user.name;
 in
 {
@@ -14,7 +13,7 @@ in
     enable = lib.mkEnableOption "Oh My Pi, a batteries-included fork of Pi";
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.omp.enable {
     home-manager.users.${user}.home.packages = [ pkgs.omp ];
   };
 }

configs/nixos/modules/shell/pi/default.nix

@@ -8,24 +8,18 @@
 # home-manager, which ships the package and manages global settings.
 # The login credential is left unmanaged, so it survives rebuilds.
 let
-  cfg = config.modules.shell.pi; # NOLINT(let_order)
-  vendoredPi = pkgs.pi-coding-agent.overrideAttrs {
-    src = ../../../../../third_party/pi;
-    patches = [ ];
-  };
   user = config.user.name;
   piDir = "${config.users.users.${user}.home}/.pi/agent";
 in
 {
-  options.modules.shell.pi = {
+  options.modules.shell.pi.enable =
-    enable = lib.mkEnableOption "Pi, a terminal coding agent, configured through home-manager";
+    lib.mkEnableOption "Pi, a terminal coding agent, configured through home-manager";
-  };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.pi.enable {
     home-manager.users.${user} = {
       programs.pi-coding-agent = {
         enable = true;
-        package = vendoredPi;
+        package = pkgs.alexion.pi-coding-agent;
 
         settings = {
           defaultProvider = "openai-codex";

configs/nixos/modules/shell/python.nix

@@ -6,15 +6,14 @@
 }:
 # Python tools for the primary user's shell environment.
 let
-  cfg = config.modules.shell.python; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.python.enable =
     lib.mkEnableOption "Python tools for the primary user's shell environment";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.python.enable {
-    registry.env-var.${config.networking.hostName}.PYTHON_TOOLCHAIN_ROOT = "${pkgs.python3}";
+    registry.env.${config.networking.hostName}.PYTHON_TOOLCHAIN_ROOT = "${pkgs.python3}";
 
     home-manager.users.${user}.home.packages = [ pkgs.python3 ];
   };

configs/nixos/modules/shell/rust.nix

@@ -6,7 +6,6 @@
 }:
 # Rust tools for the primary user's shell environment.
 let
-  cfg = config.modules.shell.rust; # NOLINT(let_order)
   toolchain = pkgs.symlinkJoin {
     name = "rust-toolchain";
     paths = with pkgs; [
@@ -23,8 +22,8 @@ in
   options.modules.shell.rust.enable =
     lib.mkEnableOption "Rust tools for the primary user's shell environment";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.rust.enable {
-    registry.env-var.${config.networking.hostName}.RUST_TOOLCHAIN_ROOT = "${toolchain}";
+    registry.env.${config.networking.hostName}.RUST_TOOLCHAIN_ROOT = "${toolchain}";
 
     home-manager.users.${user} = {
       home.packages = [

configs/nixos/modules/shell/tmux/default.nix

@@ -6,13 +6,12 @@
 # tmux for the primary user, configured through home-manager.
 # Settings without a home-manager option are read from ./extra.conf.
 let
-  cfg = config.modules.shell.tmux; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.tmux.enable = lib.mkEnableOption "tmux, configured via home-manager";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.tmux.enable {
     registry.shell-shortcut.${config.networking.hostName}.tmx = "tmux new-session -A -s";
 
     home-manager.users.${user}.programs.tmux = {

configs/nixos/modules/shell/yazi.nix

@@ -6,13 +6,12 @@
 }:
 # Yazi, a terminal file manager.
 let
-  cfg = config.modules.shell.yazi; # NOLINT(let_order)
   user = config.user.name;
 in
 {
   options.modules.shell.yazi.enable = lib.mkEnableOption "Yazi, a terminal file manager";
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf config.modules.shell.yazi.enable {
     home-manager.users.${user}.programs.yazi = {
       enable = true;
       enableFishIntegration = true;

configs/nixos/modules/zfs.nix

@@ -1,72 +0,0 @@
-{
-  config,
-  lib,
-  ...
-}:
-# The host-level ZFS pool import: durable service state a host mounts, never rebuilds.
-let
-  cfg = config.modules.zfs; # NOLINT(let_order)
-in
-{
-  options.modules.zfs = {
-    enable = lib.mkEnableOption "importing durable ZFS pools that hold service state";
-
-    hostId = lib.mkOption {
-      type = lib.types.strMatching "[0-9a-f]{8}";
-      example = "deadbeef";
-      description = ''
-        This host's 8-hex-digit ZFS host id, written to `networking.hostId`. ZFS
-        stamps an imported pool with the importing host's id, so a pool still
-        held by another machine is refused rather than silently dual-mounted. It
-        must be fixed for the machine and distinct across machines that can reach
-        the same pool.
-      '';
-    };
-
-    pools = lib.mkOption {
-      type = lib.types.attrsOf (lib.types.attrsOf lib.types.path);
-      default = { };
-      example = lib.literalExpression ''
-        {
-          tank = {
-            media = "/srv/media";
-            downloads = "/srv/downloads";
-          };
-        }
-      '';
-      description = ''
-        The ZFS pools to import at boot, keyed by pool name, each pool mapping a
-        dataset path relative to it to that dataset's mountpoint. A pool is
-        durable state imported as it stands, never created or destroyed by a
-        rebuild, so a service's data survives any rebuild or reimage. A pool
-        with an empty map is still imported, leaving each dataset to its own ZFS
-        `mountpoint` property.
-      '';
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    # The ZFS stack in the kernel and boot, needed even where the root filesystem is another kind.
-    boot.supportedFilesystems = [ "zfs" ];
-
-    # ZFS refuses to import a pool without a host id to stamp its ownership onto.
-    networking.hostId = cfg.hostId;
-
-    # The declared pools are imported at boot, distinct from any pool backing the root filesystem.
-    boot.zfs.extraPools = lib.attrNames cfg.pools;
-
-    # Each declared dataset is mounted at its host path as a native ZFS filesystem.
-    fileSystems = lib.mkMerge (
-      lib.mapAttrsToList (
-        pool: mounts:
-        lib.mapAttrs' (
-          dataset: mountpoint:
-          lib.nameValuePair mountpoint {
-            device = "${pool}/${dataset}";
-            fsType = "zfs";
-          }
-        ) mounts
-      ) cfg.pools
-    );
-  };
-}

configs/nixos/registry/homepage.nix

@@ -5,40 +5,40 @@
       tab = lib.mkOption {
         type = lib.types.str;
         example = "Apps";
-        description = "Homepage tab that contains this entry.";
+        description = "Groups the entry in a Homepage tab.";
       };
 
       section = lib.mkOption {
         type = lib.types.str;
         example = "Media";
-        description = "Homepage section that contains this entry.";
+        description = "Groups the entry in a Homepage section.";
       };
 
       name = lib.mkOption {
         type = lib.types.str;
         example = "Navidrome";
-        description = "Homepage display name for this entry.";
+        description = "Sets the display name in Homepage.";
       };
 
       description = lib.mkOption {
         type = lib.types.nullOr lib.types.str;
         default = null;
         example = "Music";
-        description = "Homepage description for this entry.";
+        description = "Sets the description in Homepage.";
       };
 
       icon = lib.mkOption {
         type = lib.types.nullOr lib.types.str;
         default = null;
         example = "navidrome.png";
-        description = "Homepage icon for this entry.";
+        description = "Sets the icon in Homepage.";
       };
 
       href = lib.mkOption {
         type = lib.types.nullOr lib.types.str;
         default = null;
         example = "https://music.alexion.dev";
-        description = "Homepage link override for this entry.";
+        description = "Overrides the generated Homepage link.";
       };
     };
   };

configs/nixos/registry/keybind.nix

@@ -0,0 +1,112 @@
+{ lib, util, ... }:
+{
+  checks = [
+    {
+      assertion = util.registry.predicates.uniquePerHost (entry: entry.value.keys);
+      message = "Desktop keybinds must use unique key chords per host.";
+    }
+    {
+      assertion =
+        entries:
+        lib.all (
+          entry:
+          (entry.value.action.kind == "exec" && entry.value.action.command != null)
+          || (
+            builtins.elem entry.value.action.kind [
+              "focus"
+              "move-window"
+            ]
+            && lib.xor (entry.value.action.direction != null) (entry.value.action.workspace != null)
+          )
+          || (
+            entry.value.action.kind == "resize-window"
+            && entry.value.action.direction != null
+            && entry.value.action.workspace == null
+          )
+          || (
+            builtins.elem entry.value.action.kind [
+              "toggle-floating"
+              "toggle-fullscreen"
+              "close-window"
+            ]
+            && entry.value.action.command == null
+            && entry.value.action.direction == null
+            && entry.value.action.workspace == null
+          )
+        ) entries;
+      message = "Desktop keybind actions must set the fields their kind requires.";
+    }
+  ];
+
+  type = lib.types.submodule {
+    options = {
+      keys = lib.mkOption {
+        description = "Sets the key chord for this desktop keybind.";
+        type = lib.types.str;
+        example = "SUPER + Return";
+      };
+
+      repeating = lib.mkOption {
+        description = "Repeats the keybind action while the key chord is held.";
+        type = lib.types.bool;
+        default = false;
+        example = true;
+      };
+
+      locked = lib.mkOption {
+        description = "Allows the keybind action while the session is locked.";
+        type = lib.types.bool;
+        default = false;
+        example = true;
+      };
+
+      action = lib.mkOption {
+        description = "Declares the action this keybind runs.";
+        type = lib.types.submodule {
+          options = {
+            kind = lib.mkOption {
+              description = "Selects the keybind action kind.";
+              type = lib.types.enum [
+                "exec"
+                "focus"
+                "move-window"
+                "resize-window"
+                "toggle-floating"
+                "toggle-fullscreen"
+                "close-window"
+              ];
+            };
+
+            command = lib.mkOption {
+              description = "Command executed by an exec keybind.";
+              type = lib.types.nullOr lib.types.str;
+              default = null;
+              example = "ghostty";
+            };
+
+            direction = lib.mkOption {
+              description = "Direction targeted by a keybind action.";
+              type = lib.types.nullOr (
+                lib.types.enum [
+                  "down"
+                  "left"
+                  "right"
+                  "up"
+                ]
+              );
+              default = null;
+              example = "left";
+            };
+
+            workspace = lib.mkOption {
+              description = "Workspace targeted by a keybind action.";
+              type = lib.types.nullOr lib.types.int;
+              default = null;
+              example = 1;
+            };
+          };
+        };
+      };
+    };
+  };
+}

configs/nixos/registry/route.nix

@@ -9,14 +9,31 @@
       assertion =
         entries:
         util.registry.predicates.uniqueValue (entry: entry.value) (
-          lib.concatMap (entry: map (port: entry // { value = port; }) entry.value.udp.ports) entries
+          lib.concatMap (entry: map (port: entry // { value = port; }) entry.value.ports) entries
         );
       message = "Route UDP ports must be unique.";
     }
     {
       assertion =
-        entries: lib.all (entry: entry.value.port == null || entry.value.http.port == null) entries;
+        entries:
-      message = "Route entries must not set both port and http.port.";
+        lib.all (entry: entry.value.port != null && entry.value.ports == [ ]) (
+          lib.filter (entry: entry.value.protocol != "udp") entries
+        );
+      message = "HTTP and HTTPS routes must set port and not ports.";
+    }
+    {
+      assertion =
+        entries:
+        lib.all (entry: entry.value.port == null && entry.value.ports != [ ]) (
+          lib.filter (entry: entry.value.protocol == "udp") entries
+        );
+      message = "UDP routes must set ports and not port.";
+    }
+    {
+      assertion =
+        entries:
+        lib.all (entry: entry.value.protocol != "udp" || entry.value.clientMaxBodySize == null) entries;
+      message = "UDP routes must not set clientMaxBodySize.";
     }
   ];
 
@@ -25,31 +42,40 @@
       domain = lib.mkOption {
         type = lib.types.str;
         example = "files.alexion.dev";
-        description = "Domain served by this route entry.";
+        description = "Records the public domain for this route.";
+      };
+
+      protocol = lib.mkOption {
+        type = lib.types.enum [
+          "http"
+          "https"
+          "udp"
+        ];
+        description = "Selects the public protocol for this route.";
       };
 
       port = lib.mkOption {
         type = lib.types.nullOr lib.types.port;
         default = null;
         example = 3923;
-        description = "HTTPS backend TCP port served by the matching address registry entry.";
+        description = "Sets the HTTP backend port for an HTTP or HTTPS route.";
       };
 
-      http.port = lib.mkOption {
+      ports = lib.mkOption {
-        type = lib.types.nullOr lib.types.port;
-        default = null;
-        example = 8082;
-        description = "HTTP backend TCP port served by the matching address registry entry.";
-      };
-
-      udp.ports = lib.mkOption {
         type = lib.types.listOf lib.types.port;
         default = [ ];
         example = [
           2456
           2457
         ];
-        description = "UDP ports served by the matching address registry entry.";
+        description = "Sets the UDP ports for a UDP route.";
+      };
+
+      clientMaxBodySize = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        example = "1g";
+        description = "Maximum HTTP request body the reverse proxy accepts.";
       };
     };
   };

configs/nixos/registry/shell-shortcut.nix

@@ -1,21 +1,20 @@
 { lib, ... }:
-let
-  entryType = lib.types.submodule {
-    options = {
-      command = lib.mkOption {
-        type = lib.types.str;
-        example = "nvim";
-        description = "Command expanded by this shell shortcut.";
-      };
-
-      abbreviation = lib.mkOption {
-        type = lib.types.bool;
-        default = true;
-        description = "Whether fish realizes this shell shortcut as an abbreviation instead of an alias.";
-      };
-    };
-  };
-in
 {
-  type = lib.types.coercedTo lib.types.str (command: { inherit command; }) entryType;
+  type = lib.types.coercedTo lib.types.str (command: { inherit command; }) (
+    lib.types.submodule {
+      options = {
+        command = lib.mkOption {
+          type = lib.types.str;
+          example = "nvim";
+          description = "Sets the command expanded by this shortcut.";
+        };
+
+        abbreviation = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          description = "Uses a Fish abbreviation instead of an alias.";
+        };
+      };
+    }
+  );
 }

configs/nixos/registry/stable-uid.nix

@@ -2,9 +2,9 @@
 let
   duplicateUids =
     entries:
-    lib.filterAttrs (_uid: serviceNames: builtins.length serviceNames > 1) (serviceNamesByUid entries);
+    lib.filterAttrs (_uid: entryNames: builtins.length entryNames > 1) (entryNamesByUid entries);
 
-  serviceNamesByUid =
+  entryNamesByUid =
     entries:
     lib.mapAttrs (_uid: uidEntries: lib.unique (map (entry: entry.entry) uidEntries)) (
       lib.groupBy (entry: toString entry.value) entries
@@ -12,15 +12,14 @@ let
 
 in
 {
-  # Next stable UID: 20005
+  # Next stable UID: 20007
-  replicate = true;
 
   type = lib.types.ints.positive;
 
   checks = [
     {
       assertion = entries: duplicateUids entries == { };
-      message = "Stable UID allocations must be unique.";
+      message = "Multiple entries use the same stable UID.";
     }
   ];
 }

configs/nixos/registry/waybar.nix

@@ -0,0 +1,29 @@
+{ lib, ... }:
+{
+  type = lib.types.submodule {
+    options = {
+      position = lib.mkOption {
+        type = lib.types.enum [
+          "left"
+          "center"
+          "right"
+        ];
+        default = "right";
+        description = "Selects the Waybar section that shows the module.";
+      };
+
+      order = lib.mkOption {
+        type = lib.types.int;
+        default = 100;
+        example = 50;
+        description = "Sorts the module within its Waybar section.";
+      };
+
+      settings = lib.mkOption {
+        type = lib.types.attrsOf lib.types.anything;
+        default = { };
+        description = "Sets the Waybar module configuration.";
+      };
+    };
+  };
+}

configs/nixos/registry/window-icon.nix

@@ -0,0 +1,19 @@
+{ lib, ... }:
+{
+
+  type = lib.types.submodule {
+    options = {
+      class = lib.mkOption {
+        description = "Matches the window class reported by the compositor.";
+        type = lib.types.str;
+        example = ".*[Ff]irefox.*";
+      };
+
+      icon = lib.mkOption {
+        description = "Sets the icon shown for matching windows.";
+        type = lib.types.str;
+        example = "";
+      };
+    };
+  };
+}

configs/nixos/secrets/pikachu.yaml

@@ -6,6 +6,17 @@ services:
         lastfm:
             api-key: ENC[AES256_GCM,data:Zb0I5TpdEqOxLAD6ed2XywFGZp7dfY69vcGiWOUJkJQ=,iv:pO53pHr09jWfzJyTsQbTHtzTmiQ9+RQkDwZJmInIiX8=,tag:io9jkSN7TF2I8+qlSymaYw==,type:str]
             secret: ENC[AES256_GCM,data:rKhd9i0/tbJlXhc9Wf81IDydjpD8khSdwJEEMK260E4=,iv:btBXWBKJp9br5a3yZsRVegN8Ytzc45Qbk2iNlPbENkQ=,tag:LUbu+6gxfqQvVpddZto7Tg==,type:str]
+    romm:
+        igdb:
+            client-id: ENC[AES256_GCM,data:tme7NzzbOlCmkMwVObWz793mOsCyVIzSjGoFvxpe,iv:5aOMvsDi8Z9aBymbqhbK79X4kJsqaET1y2Py6YUZZ/U=,tag:ih3GghlxiLsVyeTJoqU9/Q==,type:str]
+            client-secret: ENC[AES256_GCM,data:AqF7B9VaxM/X3sRqY6C5JVWPWqgRIoqy09P9ZUFj,iv:D+vDPUuGGdzKYnTVTRkI9TV/EOJgVECIeNDt9g8NGl0=,tag:MRaTT7TdEZSd+98xthVw1A==,type:str]
+        retroachievements:
+            api-key: ENC[AES256_GCM,data:LMzETQCMi9Ib783W0BZDe2PaSUSTVM5a61502RtZLg8=,iv:Hf5nBoVtZdJszQuc2n0LVNMtJCCpJrh40y4g+l+az70=,tag:esfKLpI1W8BG3Pfsg3xxKQ==,type:str]
+        steamgriddb:
+            api-key: ENC[AES256_GCM,data:+kBRieIB/dHbvQLbH2gQTQh2j6DQhybVWEGkSCRZrZY=,iv:3h6dhfiV7HfaZhMv93x8+7F3utzYG6fIbTDScA14PVI=,tag:Wo24YnvsIxe7iMRLyxrj2w==,type:str]
+        screenscraper:
+            user: ENC[AES256_GCM,data:7hGcFF4xqg==,iv:SFOdYej94Thfn+Te0kXsC9Kq568A1dsnaR+JB90MgBQ=,tag:inIWuFY7f5Tvv8EyV71dYA==,type:str]
+            password: ENC[AES256_GCM,data:eUWwDDQUSytm/6QZlG5XjbSi41nsBQbm4w==,iv:82S2a3rAVjaF0CXcjXUXErNHMY7MEkjpDL7EVX9cIHw=,tag:uGuVJCv8ThsaNnA0C0WR2Q==,type:str]
 sops:
     age:
         - enc: |
@@ -26,7 +37,7 @@ sops:
             dyjzy0/9Ui1IIXH36AImO5hiEZcrGePV2qPLLQc7ZLngC1jlJuEKJA==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1wf5s0n0tgt6ld2ysgu9dc67mj8ylwecgl4utzg7hqwy3kut9zyms7aglmh
-    lastmodified: "2026-09-12T22:54:25Z"
+    lastmodified: "2026-10-20T01:27:06Z"
-    mac: ENC[AES256_GCM,data:4R3a0ytf4i8aM8iBQ9vRC/q+hvtjLrCTNgbpCB5DbqBMBYmhtGsBmO/0i1yT0N4tydyLaGOMkNfuuuVi3ASLEOKnViy9w3uD9IN0F79W4f2vguWUVIp/T8skvN9wbV9o9xd0LkJzmeVVgzb1H6HKw+rTGjbquleoIHEBDcDDM+k=,iv:0NlckMXlS+idY6UGBF+F0KFLt+pzD7Q/YEQOdXraAYg=,tag:JBBQduV8uhnKz9gPf6HfAQ==,type:str]
+    mac: ENC[AES256_GCM,data:NCt6e/ctZwaBADfrhu1RXtILlClbHEqOAnIu8rE/zMPSwMIPB/kTtfd/ujf+1iRszoHaX4Se1xc0wz1th6NVToFVNarxBBgTk4JMUU8gdMweOjmwlh3GXU3ZcYY/xAXxWF1hxyXSEW78j3S2844H9XXENAq/Bf3mjdCYQ/qr/d4=,iv:4nFyBSmRvF4zSAwvL+xccMwtWrVbHtFKNoTb7f3rSH4=,tag:eCV/7P0TjyMZXKcWBUPXQA==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.13.3

docs/.obsidian/app.json

@@ -5,7 +5,7 @@
   "livePreview": false,
   "readableLineLength": false,
   "strictLineBreaks": true,
-  "propertiesInDocument": "hidden",
+  "propertiesInDocument": "visible",
   "showLineNumber": true,
   "autoPairMarkdown": false,
   "useTab": false,

docs/.obsidian/community-plugins.json

@@ -5,5 +5,6 @@
   "obsidian-style-settings",
   "custom-font-loader",
   "obsidian-icon-folder",
-  "table-editor-obsidian"
+  "table-editor-obsidian",
+  "obsidian-linter"
 ]

docs/.obsidian/graph.json

@@ -28,6 +28,20 @@
         "rgb": 5366249
       }
     },
+    {
+      "query": "path:\"03 wrk/tasks\"[\"status\":open]",
+      "color": {
+        "a": 1,
+        "rgb": 14725458
+      }
+    },
+    {
+      "query": "path:\"03 wrk/tasks\" [\"status\":closed]",
+      "color": {
+        "a": 1,
+        "rgb": 11657298
+      }
+    },
     {
       "query": "path:\"03 wrk\"  ",
       "color": {
@@ -60,6 +74,6 @@
   "repelStrength": 20,
   "linkStrength": 1,
   "linkDistance": 250,
-  "scale": 0.3645607001522557,
+  "scale": 0.16202697784544698,
   "close": false
 }

docs/.obsidian/plugins/obsidian-linter/data.json

@@ -0,0 +1,326 @@
+{
+  "ruleConfigs": {
+    "add-blank-line-after-yaml": {
+      "enabled": true
+    },
+    "dedupe-yaml-array-values": {
+      "enabled": true,
+      "dedupe-alias-key": true,
+      "dedupe-tag-key": true,
+      "dedupe-array-keys": true,
+      "ignore-keys": []
+    },
+    "escape-yaml-special-characters": {
+      "enabled": true,
+      "try-to-escape-single-line-arrays": true
+    },
+    "force-yaml-escape": {
+      "enabled": true,
+      "force-yaml-escape-keys": []
+    },
+    "format-tags-in-yaml": {
+      "enabled": true
+    },
+    "format-yaml-array": {
+      "enabled": true,
+      "alias-key": true,
+      "tag-key": true,
+      "default-array-keys": true,
+      "force-single-line-array-style": [],
+      "force-multi-line-array-style": []
+    },
+    "insert-yaml-attributes": {
+      "enabled": true,
+      "text-to-insert": []
+    },
+    "move-inline-fields-to-yaml": {
+      "enabled": true,
+      "how-to-handle-full-line-fields": "Move and remove",
+      "how-to-handle-bracketed-fields": "Leave in place",
+      "how-to-handle-existing-keys": "Skip",
+      "inline-keys-to-ignore": []
+    },
+    "move-tags-to-yaml": {
+      "enabled": true,
+      "how-to-handle-existing-tags": "Nothing",
+      "tags-to-ignore": []
+    },
+    "remove-yaml-keys": {
+      "enabled": true,
+      "yaml-keys-to-remove": []
+    },
+    "sort-yaml-array-values": {
+      "enabled": true,
+      "sort-alias-key": true,
+      "sort-tag-key": true,
+      "sort-array-keys": true,
+      "ignore-keys": [],
+      "sort-order": "Ascending Alphabetical"
+    },
+    "yaml-key-sort": {
+      "enabled": true,
+      "yaml-key-priority-sort-order": [
+        "aliases",
+        "date-created",
+        "date-modified"
+      ],
+      "priority-keys-at-start-of-yaml": true,
+      "yaml-sort-order-for-other-keys": "None"
+    },
+    "yaml-timestamp": {
+      "enabled": true,
+      "date-created": true,
+      "date-created-key": "date-created",
+      "date-created-source-of-truth": "file system",
+      "date-modified": true,
+      "date-modified-key": "date-modified",
+      "date-modified-source-of-truth": "file system",
+      "format": "YYYY-MM-DD HH:mm",
+      "convert-to-utc": false,
+      "update-on-file-contents-updated": "after 5 seconds"
+    },
+    "yaml-title": {
+      "enabled": false,
+      "title-key": "title",
+      "mode": "first-h1-or-filename-if-h1-missing"
+    },
+    "yaml-title-alias": {
+      "enabled": true,
+      "preserve-existing-alias-section-style": true,
+      "keep-alias-that-matches-the-filename": false,
+      "use-yaml-key-to-keep-track-of-old-filename-or-heading": false,
+      "alias-helper-key": "linter-yaml-title-alias",
+      "remove-alias-if-empty": true
+    },
+    "capitalize-headings": {
+      "enabled": true,
+      "style": "Title Case",
+      "ignore-case-words": [],
+      "lowercase-words": [],
+      "starting-word-ignore-characters": "'\"(‘“-",
+      "ending-word-ignore-characters": ".?!,:;'\")”’0123456789-",
+      "ignore-words": []
+    },
+    "file-name-heading": {
+      "enabled": true
+    },
+    "header-increment": {
+      "enabled": true,
+      "start-at-h2": false
+    },
+    "headings-start-line": {
+      "enabled": true
+    },
+    "remove-trailing-punctuation-in-heading": {
+      "enabled": true,
+      "punctuation-to-remove": ".,;:!。，；：！"
+    },
+    "footnote-after-punctuation": {
+      "enabled": true
+    },
+    "move-footnotes-to-the-bottom": {
+      "enabled": true,
+      "include-blank-line-between-footnotes": false
+    },
+    "re-index-footnotes": {
+      "enabled": true
+    },
+    "auto-correct-common-misspellings": {
+      "enabled": true,
+      "ignore-words": [],
+      "skip-words-with-multiple-capitals": true,
+      "extra-auto-correct-files": []
+    },
+    "blockquote-style": {
+      "enabled": true,
+      "style": "space"
+    },
+    "convert-bullet-list-markers": {
+      "enabled": true
+    },
+    "default-language-for-code-fences": {
+      "enabled": true,
+      "default-language": ""
+    },
+    "emphasis-style": {
+      "enabled": true,
+      "style": "consistent"
+    },
+    "no-bare-urls": {
+      "enabled": true,
+      "no-bare-uris": true
+    },
+    "ordered-list-style": {
+      "enabled": true,
+      "number-style": "ascending",
+      "list-end-style": ".",
+      "preserve-start": false
+    },
+    "proper-ellipsis": {
+      "enabled": true
+    },
+    "quote-style": {
+      "enabled": true,
+      "single-quote-enabled": true,
+      "single-quote-style": "''",
+      "double-quote-enabled": true,
+      "double-quote-style": "\"\""
+    },
+    "remove-consecutive-list-markers": {
+      "enabled": true
+    },
+    "remove-empty-list-markers": {
+      "enabled": true
+    },
+    "remove-hyphenated-line-breaks": {
+      "enabled": true
+    },
+    "remove-multiple-spaces": {
+      "enabled": true
+    },
+    "strong-style": {
+      "enabled": true,
+      "style": "consistent"
+    },
+    "two-spaces-between-lines-with-content": {
+      "enabled": false,
+      "line-break-indicator": "  "
+    },
+    "unordered-list-style": {
+      "enabled": true,
+      "list-style": "consistent"
+    },
+    "align-table-columns": {
+      "enabled": true
+    },
+    "compact-yaml": {
+      "enabled": true,
+      "inner-new-lines": false
+    },
+    "consecutive-blank-lines": {
+      "enabled": true
+    },
+    "convert-spaces-to-tabs": {
+      "enabled": true,
+      "tabsize": 4
+    },
+    "empty-line-around-blockquotes": {
+      "enabled": true
+    },
+    "empty-line-around-code-fences": {
+      "enabled": true
+    },
+    "empty-line-around-horizontal-rules": {
+      "enabled": true
+    },
+    "empty-line-around-math-blocks": {
+      "enabled": true
+    },
+    "empty-line-around-tables": {
+      "enabled": true
+    },
+    "heading-blank-lines": {
+      "enabled": true,
+      "bottom": true,
+      "empty-line-after-yaml": true
+    },
+    "line-break-at-document-end": {
+      "enabled": true
+    },
+    "move-math-block-indicators-to-their-own-line": {
+      "enabled": true
+    },
+    "paragraph-blank-lines": {
+      "enabled": true
+    },
+    "remove-empty-lines-between-list-markers-and-checklists": {
+      "enabled": true
+    },
+    "remove-link-spacing": {
+      "enabled": true
+    },
+    "remove-space-around-characters": {
+      "enabled": true,
+      "include-fullwidth-forms": true,
+      "include-cjk-symbols-and-punctuation": true,
+      "include-dashes": true,
+      "other-symbols": ""
+    },
+    "remove-space-before-or-after-characters": {
+      "enabled": true,
+      "characters-to-remove-space-before": ",!?;:).’”]",
+      "characters-to-remove-space-after": "¿¡‘“(["
+    },
+    "space-after-list-markers": {
+      "enabled": true
+    },
+    "space-between-chinese-japanese-or-korean-and-english-or-numbers": {
+      "enabled": true,
+      "english-symbols-punctuation-before": "-+;:'\"°%$)]",
+      "english-symbols-punctuation-after": "-+'\"([¥$"
+    },
+    "trailing-spaces": {
+      "enabled": true,
+      "two-space-line-break": false
+    },
+    "add-blockquote-indentation-on-paste": {
+      "enabled": true
+    },
+    "prevent-double-checklist-indicator-on-paste": {
+      "enabled": true
+    },
+    "prevent-double-list-item-indicator-on-paste": {
+      "enabled": true
+    },
+    "proper-ellipsis-on-paste": {
+      "enabled": true
+    },
+    "remove-hyphens-on-paste": {
+      "enabled": true
+    },
+    "remove-leading-or-trailing-whitespace-on-paste": {
+      "enabled": true
+    },
+    "remove-leftover-footnotes-from-quote-on-paste": {
+      "enabled": true
+    },
+    "remove-multiple-blank-lines-on-paste": {
+      "enabled": true
+    }
+  },
+  "lintOnSave": true,
+  "recordLintOnSaveLogs": false,
+  "displayChanged": true,
+  "suppressMessageWhenNoChange": true,
+  "enableDiffPreviewView": true,
+  "suppressLintAllFilesConfirmationModal": false,
+  "suppressLintAllFilesInFolderConfirmationModal": false,
+  "lintOnFileChange": false,
+  "displayLintOnFileChangeNotice": false,
+  "settingsConvertedToConfigKeyValues": true,
+  "textAreaSettingsConvertedToListItemSettings": true,
+  "defaultArrayStyleMovedToCommonStyles": true,
+  "additionalFileExtensions": [],
+  "foldersToIgnore": [
+    "99 meta/templates"
+  ],
+  "filesToIgnore": [
+    {
+      "label": "todo",
+      "match": "TODO.md",
+      "flags": "i"
+    }
+  ],
+  "linterLocale": "system-default",
+  "logLevel": "ERROR",
+  "lintCommands": [],
+  "customRegexes": [],
+  "commonStyles": {
+    "aliasArrayStyle": "multi-line",
+    "tagArrayStyle": "single-line",
+    "defaultArrayStyle": "multi-line",
+    "minimumNumberOfDollarSignsToBeAMathBlock": 2,
+    "escapeCharacter": "\"",
+    "removeUnnecessaryEscapeCharsForMultiLineArrays": true
+  }
+}