moving along wiht the refactoring

modules/options/usrEnv/services/default.nix

@@ -0,0 +1,14 @@
+{lib, ...}: let
+  inherit (lib.options) mkOption mkEnableOption;
+  inherit (lib) types;
+in {
+  options.modules.usrEnv.services.media = {
+    mpd = {
+      enable = mkEnableOption "mpd service";
+      musicDirectory = mkOption {
+        description = "music directory for mpd";
+        type = types.str;
+      };
+    };
+  };
+}