enabled dconf explicitly and added xfconf for compat

modules/system/theming/gtk.nix

@@ -34,7 +34,11 @@
         icon.enable = true;
       };
     };
-    programs.dconf.profiles.user.databases = [
+    programs = {
+      xfconf.enable = true;
+      dconf = {
+        enable = true;
+        profiles.user.databases = [
           {
             lockAll = false;
             settings = {
@@ -47,4 +51,6 @@
           }
         ];
       };
+    };
+  };
 }