anchor.diff:  
     postPatch = ''
       files=(
  -      build-aux/meson/post-install.py
         build-aux/meson/gen-demo-header.py
         demos/gtk-demo/geninclude.py
         gdk/broadway/gen-c-array.py
  
positive.code: 
    src = fetchurl {
      url = "mirror://gnome/sources/gtk/${lib.versions.majorMinor version}/gtk-${version}.tar.xz";
      sha256 = "XOjY3piiO9DI7KGmEJThwAm18AncvWC0XpkKjbG3Qv0=";
    };
  
    depsBuildBuild = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gtk4";
    version = "4.8.2";
  
    outputs = [ "out" "dev" ] ++ lib.optionals x11Support [ "devdoc" ];
    outputBin = "dev";
  