anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "webkitgtk";
  -  version = "2.28.4";
  +  version = "2.30.0";
   
     outputs = [ "out" "dev" ];
   
     src = fetchurl {
       url = "https://webkitgtk.org/releases/${pname}-${version}.tar.xz";
  -    sha256 = "0r4lkk21pny2g4mmsw0ds14m5hhjys1l47gvy59dfgihr7l546c2";
  +    sha256 = "04axfmzsb9gnyqaz5v7ljapiycxnzwpiya1l9rhp4c1qsbrdpwya";
     };
   
     patches = optionals stdenv.isLinux [
  
positive.code: , woff2
  , bubblewrap
  , libseccomp
  , xdg-dbus-proxy
  , substituteAll
  , glib
  
negative.code:   ] ++ optionals stdenv.isLinux [
      bubblewrap
      libseccomp
      systemd
      wayland
      xdg-dbus-proxy
    ] ++ optional enableGeoLocation geoclue2
  