Add custom impermanence module

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

hosts/common/user/configs/gui/x11/default.nix

@@ -1,13 +1,11 @@
 {
-  username ? throw "username argument is required",
+  user ? throw "user argument is required",
+  home ? throw "home argument is required",
 }:
 { config, ... }:
-let
-  hmConfig = config.home-manager.users.${username};
-in
 {
-  home-manager.users.${username} = {
+  home-manager.users.${user} = {
     home.pointerCursor.x11.enable = true;
-    xresources.path = "${hmConfig.xdg.configHome}/X11/xresources";
+    xresources.path = "${home}/.config/X11/xresources";
   };
 }