anchor.diff:    ];
   
     preFixup = ''
  -    rm "$out/share/ri/2.4.0/system/created.rid"
  +    rm "$out/share/ri/2.5.0/system/created.rid"
     '';
   
     meta = with stdenv.lib; {
  
positive.code: }:
  
  let
    major = "2.4";
    patch = "1";
    version = "${major}.${patch}";
  in
  
negative.code: 
    src = fetchurl {
      url = "https://cache.ruby-lang.org/pub/ruby/${major}/${name}.tar.xz";
      sha256 = "886ac5eed41e3b5fc699be837b0087a6a5a3d10f464087560d2d21b3e71b754d";
    };
  
    buildInputs = [
  