spectacle: add wrapGAppsHook

Fixes no Gsettings error when clicking saveAs.
Following method mentioned in https://github.com/NixOS/nixpkgs/issues/16285

pkgs/applications/kde/spectacle.nix

@@ -5,11 +5,12 @@
 , knotifications, kscreen, kwidgetsaddons, kwindowsystem, kxmlgui, libkipi
 , qtx11extras, knewstuff, kwayland, qttools, kcolorpicker, kimageannotator
 , qcoro, qtquickcontrols2, wayland, plasma-wayland-protocols, kpurpose, kpipewire
+, wrapGAppsHook
 }:
 
 mkDerivation {
   pname = "spectacle";
-  nativeBuildInputs = [ extra-cmake-modules kdoctools ];
+  nativeBuildInputs = [ extra-cmake-modules kdoctools wrapGAppsHook ];
   buildInputs = [
     kconfig kcoreaddons kdbusaddons kdeclarative ki18n kio knotifications
     kscreen kwidgetsaddons kwindowsystem kxmlgui libkipi qtx11extras xcb-util-cursor
@@ -20,6 +21,13 @@ mkDerivation {
     substituteInPlace desktop/org.kde.spectacle.desktop.cmake \
       --replace "Exec=@QtBinariesDir@/qdbus" "Exec=${lib.getBin qttools}/bin/qdbus"
   '';
+
+  dontWrapGApps = true;
+
+  preFixup = ''
+    qtWrapperArgs+=("''${gappsWrapperArgs[@]}")
+  '';
+
   propagatedUserEnvPkgs = [ kipi-plugins libkipi ];
   meta = with lib; {
     homepage = "https://apps.kde.org/spectacle/";