Refactor DMS configuration and introduce home-manager integration

- Simplified `default.nix` by removing legacy home-manager settings and delegating them to a new `_private/hm.nix` module for better organization.
- Added a new script `dms-restart-once.sh` to handle service restarts and cache management for DMS plugins.
- Updated the DMS configuration to streamline the integration of third-party plugins and improve overall modularity.

flake.nix

@@ -207,7 +207,7 @@
       lib = inputs.nixpkgs.lib;
       # import-tree default: only .nix, skip paths with /_/ (see
       # https://import-tree.oeiuwq.com/guides/filtering/ ). filterNot composes AND with that.
-      # Skip /package/, /packages/, and dms/home-manager/ (callPackage + DMS HM colocation).
+      # Skip /package/ and /packages/ (callPackage colocation).
       # Avoid a global "/home-manager/" filter — it would drop modules/ssh/home-manager/.
       modulesTree =
         lib.pipe inputs.import-tree [
@@ -217,7 +217,6 @@
               p:
               lib.hasInfix "/package/" p
               || lib.hasInfix "/packages/" p
-              || lib.hasInfix "dms/home-manager/" p
             ))
           (it: it ./modules)
         ];

modules/desktop/shells/dms/_private/hm.nix

@@ -1,3 +1,4 @@
+# Home Manager wiring for DMS (imported by default.nix; lives under _private/ for import-tree).
 {
   inputs,
   config,
@@ -5,10 +6,17 @@
   lib,
   osConfig ? { },
   ...
-}: let
+}:
+let
   home = config.home.homeDirectory;
   dmsEnabled = lib.attrByPath [ "chiasson" "desktop" "shell" ] null osConfig == "dms";
   dmsOs = lib.attrByPath [ "chiasson" "desktop" "shells" "dms" ] { } osConfig;
+  hostName = lib.attrByPath [ "networking" "hostName" ] "nixos" osConfig;
+  rebuildCommand =
+    if (dmsOs.rebuildCommand or null) != null then
+      dmsOs.rebuildCommand
+    else
+      [ "sudo" "nixos-rebuild" "switch" "--flake" ".#${hostName}" ];
   gpuTempEnabled = dmsOs.enableGpuTemp or true;
   hyprlandEnabled = lib.attrByPath [ "chiasson" "desktop" "hyprland" "enable" ] false osConfig;
   discordEnabled = lib.attrByPath [ "chiasson" "home" "apps" "discord" "enable" ] false config;
@@ -57,12 +65,12 @@
         "${pkgs.util-linux}/bin/flock"
         "${pkgs.systemd}/bin/systemctl"
       ]
-      (builtins.readFile ./scripts/dms-restart-once.sh)
+      (builtins.readFile ../scripts/dms-restart-once.sh)
   );
 
   jsonFormat = pkgs.formats.json { };
   dmsConfigDir = "${config.xdg.configHome}/DankMaterialShell";
-  defaultSeedDir = lib.attrByPath [ "chiasson" "desktop" "shells" "dms" "defaultSeedDir" ] null osConfig;
+  defaultSeedDir = dmsOs.defaultSeedDir or null;
 
   dmsSeedSources =
     if defaultSeedDir != null then
@@ -75,7 +83,7 @@
     else
       {
         "settings.json" = jsonFormat.generate "dms-settings-seed.json" (
-          import ../_private/default-settings.nix {
+          import ./default-settings.nix {
             inherit lib gpuTempEnabled;
             extraRightBarWidgets = dmsOs.extraRightBarWidgets or [ ];
           }
@@ -105,7 +113,7 @@
     ${dmsSeedBody}
   '';
 
-  matugenConfigText = import ../_private/matugen-config.nix {
+  matugenConfigText = import ./matugen-config.nix {
     inherit
       lib
       home
@@ -116,7 +124,6 @@
       ;
   };
 
-  # Directory name must match each plugin's `id` in plugin.json.
   thirdPartyPlugins = {
     dankVault = inputs.dms-plugin-dank-vault;
     calculator = inputs.dms-plugin-calculator;
@@ -138,14 +145,14 @@
     rbwLockToggle = inputs.dms-plugin-rbw-lock-toggle;
   };
 
-  shipThirdPartyPlugin =
+  shipPlugin =
-    id: src:
+    _id: src:
     {
       source = src;
       onChange = "${dmsRestartOnceScript}";
     };
-
+in
-in {
+{
   imports = [
     inputs.dms.homeModules.dank-material-shell
     inputs.nix-monitor.homeManagerModules.default
@@ -153,15 +160,12 @@ in {
 
   config = lib.mkIf dmsEnabled (lib.mkMerge [
     (lib.mkIf (dmsOs.bundleThirdPartyPlugins or true) {
-      xdg.configFile =
+      xdg.configFile = lib.mapAttrs (_id: src: shipPlugin _id src) thirdPartyPlugins;
-        lib.mapAttrs (id: src: shipThirdPartyPlugin id src) thirdPartyPlugins;
     })
     {
-
-  # Nix rebuild widget used by DankMaterialShell (via nix-monitor).
-  # Per-host `rebuildCommand` is set in `modules/hosts/<host>/configuration.nix` (`chiasson.desktop.shells.dms`).
       programs.nix-monitor = {
         enable = true;
+        inherit rebuildCommand;
         generationsCommand = [
           "bash"
           "-c"
@@ -174,60 +178,41 @@ in {
         kdePackages.kirigami.unwrapped
         kdePackages.qtmultimedia
         kdePackages.sonnet
-    # ocrScanner DMS plugin — eng/fra/vie and 120+ langs ship in nixpkgs tessdata.
         tesseract
-    # ambientSound DMS plugin — mpv playback + socat IPC to mpv socket.
         mpv
         socat
-    # dankVault / emojiLauncher / ephemera — Wayland clipboard.
         wl-clipboard
-    # nixPackageRunner DMS plugin.
         jq
-    # cavaVisualizer DMS plugin.
         cava
-    # ephemera DMS plugin — API requests + optional keyring storage.
         curl
         libsecret
       ];
+
       programs.dank-material-shell = {
         enable = true;
-
-    # homeAssistantMonitor plugin (QtWebSockets) needs QML on DMS's import path, not just home.packages.
         package = inputs.dms.packages.${pkgs.stdenv.hostPlatform.system}.dms-shell.override {
           extraQtPackages = with pkgs.kdePackages; [ qtwebsockets ];
         };
-
         systemd = {
-      enable = true; # Systemd service for auto-start
+          enable = true;
-      restartIfChanged = true; # Auto-restart dms.service when dankMaterialShell changes
+          restartIfChanged = true;
         };
-
+        enableSystemMonitoring = true;
-    # Core features
-    enableSystemMonitoring = true; # System monitoring widgets (dgop)
         dgop.package = inputs.dgop.packages.${pkgs.stdenv.hostPlatform.system}.default;
-    enableVPN = true; # VPN management widget
+        enableVPN = true;
-    enableDynamicTheming = true; # Wallpaper-based theming (matugen)
+        enableDynamicTheming = true;
-    enableAudioWavelength = true; # Audio visualizer (cava)
+        enableAudioWavelength = true;
-    enableCalendarEvents = false; # Disable calendar integration (khal/ikhal)
+        enableCalendarEvents = false;
-
-    # Leave `session` at {} — non-empty makes HM rewrite session.json every switch and nukes wallpaper/session state.
-    # Leave `settings` at {} — UI-owned settings.json is seeded once on first run (see home.activation below).
         settings = { };
         session = { };
       };
 
-  # Detach store symlinks so UI edits survive rebuilds; seed defaults only on a fresh profile.
       home.activation.dmsSeedConfig = lib.hm.dag.entryAfter [ "writeBoundary" ] "${dmsSeedConfigScript}";
 
-  # matugen won't create missing output_path parents; run before DMS theme generation.
       systemd.user.services.dms.serviceConfig.ExecStartPre =
         lib.mkOrder 100 "${ensureMatugenOutputDirsScript}";
 
-  # DMS / matugen custom templates.
-  #
-  # DMS docs (custom templates): https://danklinux.com/docs/dankmaterialshell/application-themes#custom-matugen-templates
       xdg.configFile."matugen/config.toml".text = matugenConfigText;
-
       xdg.configFile."matugen/templates/dank-discord.css".source = ../templates/dank-discord.css;
       xdg.configFile."matugen/templates/hyprland-colors.conf".source = ../templates/hyprland-colors.conf;
       xdg.configFile."matugen/templates/ohmyposh-theme.omp.json".source = ../templates/ohmyposh-theme.omp.json;
@@ -235,7 +220,6 @@ in {
         ../templates/obsidian-minimal-matugen-colors.css;
     }
     (lib.mkIf ohMyPoshEnabled {
-    # Same path as matugen `[templates.ohmyposh]`; seeded as a real file by `ensureMatugenOutputDirsScript`.
       programs.oh-my-posh = {
         useTheme = lib.mkForce null;
         configFile = lib.mkForce "${config.xdg.configHome}/oh-my-posh/theme.omp.json";

modules/desktop/shells/dms/default.nix

@@ -1,4 +1,4 @@
-{ inputs, ... }: {
+{ ... }: {
   flake.nixosModules.desktopShellDmsOptions = { lib, ... }: {
     options.chiasson.desktop.shells.dms = {
       enableGpuTemp = lib.mkOption {
@@ -45,29 +45,5 @@
     };
   };
 
-  flake.homeManagerModules.desktopShellDms = {
+  flake.homeManagerModules.desktopShellDms = import ./_private/hm.nix;
-    lib,
-    osConfig ? { },
-    ...
-  }:
-  let
-    cfg = lib.attrByPath [ "chiasson" "desktop" "shells" "dms" ] { } osConfig;
-    selectedShell = lib.attrByPath [ "chiasson" "desktop" "shell" ] null osConfig;
-    dmsEnabled = selectedShell == "dms";
-    hostName = lib.attrByPath [ "networking" "hostName" ] "nixos" osConfig;
-    rebuildCommand =
-      if (cfg.rebuildCommand or null) != null then
-        cfg.rebuildCommand
-      else
-        [ "sudo" "nixos-rebuild" "switch" "--flake" ".#${hostName}" ];
-  in
-  {
-    imports = [
-      ./home-manager/default.nix
-    ];
-
-    config = lib.mkIf dmsEnabled {
-      programs.nix-monitor.rebuildCommand = rebuildCommand;
-    };
-  };
 }