anchor.diff:  lib.checkListOfEnum "${pname}: tweaks" [ "nord" "black" "midblack" "rimless" "normal" ] tweaks
   lib.checkListOfEnum "${pname}: grub screens" [ "1080p" "2k" "4k" ] grubScreens
   
  -stdenvNoCC.mkDerivation {
  +stdenvNoCC.mkDerivation rec {
     inherit pname;
     version = "unstable-2022-02-04";
   
  
positive.code:     runHook postInstall
    '';
  
    meta = with lib; {
      description = "Flat Gtk+ theme based on Elegant Design";
      homepage = "https://github.com/vinceliuice/Graphite-gtk-theme";
  
negative.code: { lib
  , stdenvNoCC
  , fetchFromGitHub
  , gitUpdater
  , gnome-themes-extra
  , gtk-engine-murrine
  , jdupes
  