dunst: add option to specify configuration file path

Author: ctem

modules/services/dunst.nix

@@ -71,6 +71,13 @@ in {
         description = "Command line options given to dunst.";
       };
 
+      configPath = mkOption {
+        type = types.str;
+        default = "${config.xdg.configHome}/dunst/dunstrc";
+        defaultText = "$XDG_CONFIG_HOME/dunst/dunstrc";
+        description = "Path to dunst configuration file.";
+      };
+
       iconTheme = mkOption {
         type = themeType;
         default = hicolorTheme;
@@ -169,7 +176,7 @@ in {
     }
 
     (mkIf (cfg.settings != { }) {
-      xdg.configFile."dunst/dunstrc" = {
+      home.file."${cfg.configPath}" = {
         text = toDunstIni cfg.settings;
         onChange = ''
           pkillVerbose=""