anchor.diff:  
     src = fetchurl {
       url = "https://cache.ruby-lang.org/pub/ruby/${major}/${name}.tar.xz";
  -    sha256 = "4fc8a9992de3e90191de369270ea4b6c1b171b7941743614cc50822ddc1fe654";
  +    sha256 = "886ac5eed41e3b5fc699be837b0087a6a5a3d10f464087560d2d21b3e71b754d";
     };
   
     buildInputs = [
  
positive.code: }:
  
  let
    major = "2.4";
    patch = "1";
    version = "${major}.${patch}";
  in
  
negative.code:   ];
  
    preFixup = ''
      rm "$out/share/ri/2.5.0/system/created.rid"
    '';
  
    meta = with stdenv.lib; {
  