anchor.diff:  , gdk-pixbuf
   , gobject-introspection
   , fribidi
  +, harfbuzz
   , xorg
   , epoxy
  -, json-glib
   , libxkbcommon
   , libxml2
  -, librest
  -, libsoup
  -, ffmpeg
  -, gmp
   , gnome
   , gsettings-desktop-schemas
   , gst_all_1
  
positive.code: , x11Support ? stdenv.isLinux
  , waylandSupport ? stdenv.isLinux
  , libGL
  , vulkan-loader
  , vulkan-headers
  , wayland
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gtk4";
    version = "4.4.0";
  
    outputs = [ "out" "dev" ] ++ lib.optionals x11Support [ "devdoc" ];
    outputBin = "dev";
  