anchor.diff:  , cyrus-sasl
   , gperftools
   , icu
  -, libbson
   , libpcap
   , mongo-c-driver
   , openssl
  
positive.code:     cyrus-sasl
      gperftools
      #icu
      libbson
      libpcap
      mongo-c-driver
      openssl
  
negative.code: 
    src = fetchurl {
      url = "https://downloads.mongodb.org/src/mongodb-src-r${version}.tar.gz";
      sha256 = "b99535800925b5c5a9a103fdad37559b6cde13e7cdce72310f32ff105ec615df";
    };
  
    nativeBuildInputs = [
  