fix ugaif.forUser

hosts/boot.nix

@@ -78,7 +78,14 @@
     };
   };
 
-  config = {
+  config = lib.mkMerge [
+    # Enable forUser if specified
+    (lib.mkIf (config.ugaif.forUser != null) {
+      ugaif.users.${config.ugaif.forUser}.enable = true;
+    })
+
+    # Main configuration
+    {
       # ========== Disk Partitioning (Disko) ==========
       disko.enableConfig = lib.mkDefault true;
 
@@ -177,5 +184,6 @@
       '';
 
       system.stateVersion = "25.11"; # Did you read the comment?
-  };
+    }
+  ];
 }

hosts/user-config.nix

@@ -107,11 +107,6 @@ in
   };
 
   config = {
-    # Enable forUser if specified
-    ugaif.users = lib.mkIf (config.ugaif.forUser != null) {
-      ${config.ugaif.forUser}.enable = true;
-    };
-
     # Generate NixOS users
     users.users =
       let