fix(overlays/qutebrowser): fix gsettings schema issue

overlays/default.nix

@@ -43,15 +43,26 @@ in {
       };
 
     qutebrowser = prev.qutebrowser.overrideAttrs (oldAttrs: {
-      # Force x11, as live-refreshing colorscheme based on portal is not working on wayland platform atm
-      # This is fixed by https://codereview.qt-project.org/c/qt/qtbase/+/547252
       preFixup =
         oldAttrs.preFixup
-        + ''
+        +
+        # Force x11, as live-refreshing colorscheme based on portal is not working on wayland platform atm
+        # This is fixed by https://codereview.qt-project.org/c/qt/qtbase/+/547252
+        ''
           makeWrapperArgs+=(
             --set QT_QPA_PLATFORM xcb
           )
-        '';
+        ''
+        +
+        # Fix for https://github.com/NixOS/nixpkgs/issues/168484
+        (let
+          schemaPath = package: "${package}/share/gsettings-schemas/${package.name}";
+        in ''
+          makeWrapperArgs+=(
+            --prefix XDG_DATA_DIRS : ${schemaPath final.gsettings-desktop-schemas}
+            --prefix XDG_DATA_DIRS : ${schemaPath final.gtk3}
+          )
+        '');
       patches =
         (oldAttrs.patches or [])
         ++ [