anchor.diff:  
     configureFlags = with stdenv.lib; [
       "--disable-geolocation"
  +    "--disable-jit"
       (optionalString enableIntrospection "--enable-introspection")
     ] ++ optional withGtk2 [
       "--with-gtk=2.0"
  
positive.code: with stdenv.lib;
  stdenv.mkDerivation rec {
    name = "webkitgtk-${version}";
    version = "2.4.9";
  
    meta = with stdenv.lib; {
      description = "Web content rendering engine, GTK+ port";
  
negative.code: 
    src = fetchurl {
      url = "http://webkitgtk.org/releases/${name}.tar.xz";
      sha256 = "1xsvnvyvlywwyf6m9ainpsg87jkxjmd37q6zgz9cxb7v3c2ym2jq";
    };
  
    CC = "cc";
  