anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "webkitgtk";
  -  version = "2.36.7";
  -
  -  outputs = [ "out" "dev" ];
  +  version = "2.37.1";
  +
  +  outputs = [ "out" "dev" "devdoc" ];
   
     separateDebugInfo = stdenv.isLinux;
   
     src = fetchurl {
       url = "https://webkitgtk.org/releases/${pname}-${version}.tar.xz";
  -    sha256 = "sha256-DCYM8rMvBIHQF2cN/tG2HlVJZ80GcZVgbJ+etf5zF0M=";
  +    sha256 = "sha256-xTMmsXUfjG2j2y9L+pHBgBdViT4ofQ4fbAc0RYnUpqc=";
     };
   
     patches = lib.optionals stdenv.isLinux [
  
positive.code:     sed 43i'#include <CommonCrypto/CommonCryptor.h>' -i Source/WTF/wtf/RandomDevice.cpp
    '';
  
    requiredSystemFeatures = [ "big-parallel" ];
  
    meta = with lib; {
  
negative.code:     pkg-config
      python3
      ruby
      gi-docgen
      glib # for gdbus-codegen
    ] ++ lib.optionals stdenv.isLinux [
      wayland # for wayland-scanner
  