Expand xdg config

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

users/configs/theme/default.nix

@@ -1,8 +1,11 @@
-{ user ? throw "user argument is required" }: { pkgs, ... }:
+{ user ? throw "user argument is required" }: { config, pkgs, ... }:
 
+let
+  hmConfig = config.home-manager.users."${user.name}";
+in
 {
   home-manager.users."${user.name}" = {
     theme.enable = true;
-    home.persistence."/persist${user.home}".directories = [ ".config/theme" ];
+    home.persistence."/persist${user.home}".directories = [ "${hmConfig.xdg.relativeConfigHome}/theme" ];
   };
 }