anchor.diff:  , fetchFromGitHub
   
   , bzip2
  -, db
   , expat
  +, lmdb
   , mcpp
   , openssl
   }:
  
positive.code: 
    buildInputs = [
      bzip2
      db
      expat
      mcpp
      openssl
    ];
  
negative.code:     makeFlagsArray+=("prefix=$out")
    '';
  
    buildFlags = [
      "srcs"
    ];
  
    meta = with stdenv.lib; {
      description = "The internet communications engine";
      homepage = "http://www.zeroc.com/ice.html";
  