anchor.diff:      ${python.interpreter} -m unittest
     '';
   
  -  # no tests on PyPI, no tags on GitHub
  -  doCheck = false;
  -
     pythonImportsCheck = [ "pysyncthru" ];
   
     meta = with lib; {
  
positive.code: 
    disabled = isPy27;
  
    src = fetchPypi {
      pname = "PySyncThru";
      inherit version;
      sha256 = "13564018a7de4fe013e195e19d7bae92aa224e0f3a32373576682722d3dbee52";
    };
  
    propagatedBuildInputs = [
  
negative.code: { lib
  , isPy27
  , buildPythonPackage
  , fetchFromGitHub
  , aiohttp
  , demjson
  , python
  