anchor.diff:      owner = "ikalchev";
       repo = pname;
       rev = "v${version}";
  -    sha256 = "sha256-oDTyFIhf7oogYyh9LpmVtagi1kDXLCc/7c2UH1dL2Sg=";
  +    sha256 = "0mkrs3fwiyp4am9fx1dnhd9h7rphfwymr46khw40xavrfb5jmsa7";
     };
   
     propagatedBuildInputs = [
  +    base36
       cryptography
       curve25519-donna
       ecdsa
       ed25519
       h11
  +    pyqrcode
       zeroconf
     ];
   
  
positive.code: 
  buildPythonPackage rec {
    pname = "HAP-python";
    version = "3.3.2";
    disabled = pythonOlder "3.5";
  
    # pypi package does not include tests
  
negative.code: { lib
  , buildPythonPackage
  , base36
  , cryptography
  , curve25519-donna
  , ecdsa
  , ed25519
  , fetchFromGitHub
  , h11
  , pyqrcode
  , pytest-asyncio
  , pytest-timeout
  , pytestCheckHook
  