home/mpd: move update-database path unit to separate module

flake.nix

@@ -129,6 +129,7 @@
       nix-index-auto-update-database = ./home/modules/programs/nix-index/auto-update-database.nix;
       direnv-auto-prune = ./home/modules/programs/direnv/auto-prune.nix;
       newsboat = ./home/modules/programs/newsboat;
+      mpd-auto-updater = ./home/modules/services/mpd.nix;
     };
 
     homeConfigurations = {

home/home.nix

@@ -54,6 +54,7 @@ in {
     ./modules/programs/nix-index/auto-update-database.nix
     ./modules/programs/direnv/auto-prune.nix
     ./modules/programs/newsboat
+    ./modules/services/mpd.nix
   ] ++ (optionals graphics [
     ./config/gtk.nix
 

home/modules/services/mpd.nix

@@ -0,0 +1,54 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.mpd;
+in
+{
+  options.services.mpd.autoUpdateDatabase = lib.mkEnableOption "watchdog that updates the mpd database upon file changes";
+
+  config = lib.mkIf cfg.autoUpdateDatabase {
+    systemd.user.paths.mpd-update-database = {
+      Install.WantedBy = [ "paths.target" ];
+      Unit = {
+        Description = "Watchdog that updates the mpd database upon file changes";
+        Documentation = [
+          "man:mpd(1)"
+          "man:mpd.conf(5)"
+        ];
+      };
+      Path = {
+        PathChanged = [
+          cfg.musicDirectory
+          cfg.playlistDirectory
+        ];
+        Unit = "mpd-update-database.service";
+        TriggerLimitIntervalSec = "1s";
+        TriggerLimitBurst = "1";
+      };
+    };
+
+    systemd.user.services.mpd-update-database = {
+      Unit = {
+        Description = "Watchdog that updates the mpd library whenever the files are modified";
+        Documentation = [
+          "man:mpd(1)"
+          "man:mpd.conf(5)"
+        ];
+      };
+      Service = {
+        Type = "oneshot";
+        ExecStart = "${lib.getExe pkgs.mpc-cli} update --wait";
+
+        PrivateUsers = true;
+        ProtectSystem = true;
+        NoNewPrivileges = true;
+        ProtectKernelTunables = true;
+        ProtectControlGroups = true;
+        RestrictAddressFamilies = [
+          "AF_INET"
+          "AF_UNIX"
+        ];
+        RestrictNamespaces = true;
+      };
+    };
+  };
+}

home/services/mpd.nix

@@ -9,6 +9,8 @@ in
     playlistDirectory = "${cfg.musicDirectory}/playlists/MPD";
     network.startWhenNeeded = true;
 
+    autoUpdateDatabase = true;
+
     extraConfig = ''
       pid_file "/run/user/${toString config.home.uid}/mpd/pid"
 
@@ -95,47 +97,5 @@ in
       RestrictNamespaces = true;
     };
   };
-
-  systemd.user.paths.mpd-update-library = {
-    Unit = {
-      Description = "Watchdog that updates the mpd library whenever the files are modified";
-      Documentation = [
-        "man:mpd(1)"
-        "man:mpd.conf(5)"
-      ];
-      WantedBy = [ "paths.target" ];
-    };
-    Path = {
-      PathChanged = cfg.musicDirectory;
-      Unit = "mpd-update-library.service";
-      TriggerLimitIntervalSec = "1s";
-      TriggerLimitBurst = "1";
-    };
-  };
-
-  systemd.user.services.mpd-update-library = {
-    Unit = {
-      Description = "Watchdog that updates the mpd library whenever the files are modified";
-      Documentation = [
-        "man:mpd(1)"
-        "man:mpd.conf(5)"
-      ];
-    };
-    Service = {
-      Type = "oneshot";
-      ExecStart = "${lib.getExe pkgs.mpc-cli} update --wait";
-
-      PrivateUsers = true;
-      ProtectSystem = true;
-      NoNewPrivileges = true;
-      ProtectKernelTunables = true;
-      ProtectControlGroups = true;
-      RestrictAddressFamilies = [
-        "AF_INET"
-        "AF_UNIX"
-      ];
-      RestrictNamespaces = true;
-    };
-  };
 }