anchor.diff:  , buildPythonPackage
   , fetchPyPi
   , isPy27
  +, lib
   
   , botocore
   , futures
  
positive.code:   inherit (stdenv.lib)
      optionals;
  
    version = "0.1.9";
  in
  buildPythonPackage rec {
    name = "s3transfer-${version}";
  
negative.code:   src = fetchPyPi {
      package = "s3transfer";
      inherit version;
      sha256 = "ba1a9104939b7c0331dc4dd234d79afeed8b66edce77bbeeecd4f56de74a0fc1";
    };
  
    propagatedBuildInputs = [
  