anchor.diff:      libidn
       libintl
       lcms2
  -    libnotify
       libpthreadstubs
       libtasn1
       libwebp
  
positive.code: 
    src = fetchurl {
      url = "https://webkitgtk.org/releases/${pname}-${version}.tar.xz";
      sha256 = "sha256-xTMmsXUfjG2j2y9L+pHBgBdViT4ofQ4fbAc0RYnUpqc=";
    };
  
    patches = lib.optionals stdenv.isLinux [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "webkitgtk";
    version = "2.37.90";
  
    outputs = [ "out" "dev" "devdoc" ];
  
  