home: Re‐enable music support

home/config/nil/home.nix

@@ -23,6 +23,7 @@ in {
     ./sioyek.nix
     ./texlive.nix
     ./mpv.nix
+    ./music.nix
   ];
 
   home.stateVersion = "24.11";

home/config/nil/music.nix

@@ -0,0 +1,64 @@
+{ ... }: { config, lib, pkgs, ... }@args:
+let
+  osConfig = args.osConfig or { };
+
+  systemctl = osConfig.systemd.package + /bin/systemctl;
+in lib.mkIf (osConfig.hardware.graphics.enable or false) {
+    programs.beets = {
+    enable = true;
+    settings = {
+      directory = "~/msc";
+      import.reflink = "auto";
+
+      plugins = [
+        "chroma"
+        "spotify"
+        "fromfilename"
+
+        "fetchart"
+        "lyrics"
+        "replaygain"
+
+        "duplicates"
+        "hook"
+      ];
+
+      hook.hooks = [
+        {
+          event = "import";
+          command = "${systemctl} --user start mopidy-scan.service";
+        }
+      ];
+    };
+  };
+
+  services.mopidy = {
+    enable = true;
+    extensionPackages = with pkgs; [
+      mopidy-iris
+      mopidy-local
+      mopidy-mpd
+      mopidy-mpris
+    ];
+
+    settings = {
+      core = {
+        cache_dir = "$XDG_CACHE_DIR/mopidy";
+        config_dir = "$XDG_CONFIG_DIR/mopidy";
+        data_dir = "$XDG_DATA_DIR/mopidy";
+      };
+
+      audio.mixer = "none";
+      file.media_dirs = [ "$XDG_MUSIC_DIR" ];
+      local.media_dir = "$XDG_MUSIC_DIR";
+
+      mpd.hostname = "localhost";
+
+      http = {
+        hostname = "localhost";
+        port = 6680;
+        default_app = "iris";
+      };
+    };
+  };
+}