anchor.diff:  stdenv.mkDerivation rec {
     name = "erlang-" + version + "${optionalString odbcSupport "-odbc"}"
     + "${optionalString javacSupport "-javac"}";
  -  version = "19.1.6";
  +  version = "19.2";
   
     # Minor OTP releases are not always released as tarbals at
     # http://erlang.org/download/ So we have to download from
  
positive.code:     owner = "erlang";
      repo = "otp";
      rev = "OTP-${version}";
      sha256 = "120dqi8h2fwqfmh9g2nmkf153zlglzw9kkddz57xqvqq5arcs72y";
    };
  
    buildInputs =
  
negative.code:       ++ stdenv.lib.optionals stdenv.isDarwin [ Carbon Cocoa ];
  
    debugInfo = enableDebugInfo;
  
    prePatch = ''
      substituteInPlace configure.in \
        --replace '`sw_vers -productVersion`' '10.10'
    '';
  
    preConfigure = ''
      ./otp_build autoconf
  