anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "webkitgtk";
  -  version = "2.37.1";
  +  version = "2.37.90";
   
     outputs = [ "out" "dev" "devdoc" ];
   
  
positive.code: , pkg-config
  , gettext
  , gobject-introspection
  , libnotify
  , gnutls
  , libgcrypt
  , libgpg-error
  
negative.code:     libidn
      libintl
      lcms2
      libpthreadstubs
      libtasn1
      libwebp
  