Expand xdg config

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

users/configs/rofi/default.nix

@@ -1,10 +1,13 @@
-{ 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}" = {
     home = {
       packages = with pkgs; [ rofi-wayland ];
-      persistence."/cache${user.home}".directories = [ ".cache/rofi" ];
+      persistence."/cache${user.home}".directories = [ "${hmConfig.xdg.relativeCacheHome}/rofi" ];
     };
   };
 }