anchor.diff:  , fetchurl
   
   , gdbm
  -, libffi
  +, gmp
   , openssl
   , readline
   , zlib
   }:
   
   let
  -  major = "2.5";
  +  major = "2.6";
     patch = "1";
     version = "${major}.${patch}";
   in
  
positive.code:     "--enable-shared"
    ];
  
    preFixup = ''
      rm "$out/share/ri/2.5.0/system/created.rid"
    '';
  
    meta = with stdenv.lib; {
      maintainers = with maintainers; [
        wkennington
  
negative.code: 
    src = fetchurl {
      url = "https://cache.ruby-lang.org/pub/ruby/${major}/${name}.tar.xz";
      sha256 = "47b629808e9fd44ce1f760cdf3ed14875fc9b19d4f334e82e2cf25cb2898f2f2";
    };
  
    buildInputs = [
      gdbm
      gmp
      openssl
      readline
      zlib
  