Fix GNOME extensions app not launching 🐛

Fixes #88.

modules/gnome/hm.nix

@@ -1,4 +1,4 @@
-{ pkgs, config, lib, ... }:
+{ pkgs, config, lib, ... }@args:
 
 with lib;
 
@@ -28,7 +28,7 @@ with lib;
 
     xdg.dataFile."themes/Stylix/gnome-shell/gnome-shell.css" = {
       source =
-        let theme = import ./theme.nix { inherit pkgs config; };
+        let theme = import ./theme.nix args;
         in "${theme}/share/gnome-shell/gnome-shell.css";
       onChange = ''
         if [ -x "$(command -v gnome-extensions)" ]; then

modules/gnome/nixos.nix

@@ -1,9 +1,12 @@
-{ pkgs, config, ... }:
+{ pkgs, config, ... }@args:
 
 let 
   # We use this imported lib instead of the one from the module arguments
   # to avoid infinite loops if the lib in arguments depends on nixpkgs.overlays
   lib = (builtins.getFlake "github:nix-community/nixpkgs.lib/c9d4f2476046c6a7a2ce3c2118c48455bf0272ea").lib;
+
+  theme = import ./theme.nix args;
+
 in {
   options.stylix.targets.gnome.enable =
     lib.mkOption {
@@ -24,12 +27,10 @@ in {
     nixpkgs.overlays = [(self: super: {
       gnome = super.gnome.overrideScope' (gnomeSelf: gnomeSuper: {
         gnome-shell = gnomeSuper.gnome-shell.overrideAttrs (oldAttrs: {
-          postFixup =
-            let theme = import ./theme.nix { inherit config; pkgs = super; };
-            in ''
-              cp ${theme}/share/gnome-shell/gnome-shell-theme.gresource \
-                $out/share/gnome-shell/gnome-shell-theme.gresource
-            '';
+          postFixup = (oldAttrs.postFixup or "") + ''
+            cp ${theme}/share/gnome-shell/gnome-shell-theme.gresource \
+              $out/share/gnome-shell/gnome-shell-theme.gresource
+          '';
           patches = (oldAttrs.patches or []) ++ [
             ./shell_remove_dark_mode.patch
           ];

modules/gnome/theme.nix

@@ -1,4 +1,4 @@
-{ pkgs,  config }:
+{ pkgs, config, ... }:
 
 let
   colors = config.lib.stylix.colors {