anchor.diff:      owner = "ndokter";
       repo = "dsmr_parser";
       rev = "v${version}";
  -    sha256 = "sha256-Phx8Yqx6beTzkQv0fU8Pfs2btPgKVARdO+nMcne1S+w=";
  +    sha256 = "sha256-GO+lSgTmFgi/ljt99mteoot+p5BJnGb6ZFky5I3I6Io=";
     };
   
     propagatedBuildInputs = [
  +    dlms-cosem
       pyserial
       pyserial-asyncio
       pytz
  
positive.code: 
  buildPythonPackage rec {
    pname = "dsmr-parser";
    version = "0.33";
    format = "setuptools";
  
    disabled = pythonOlder "3.8";
  
negative.code: { lib
  , buildPythonPackage
  , dlms-cosem
  , fetchFromGitHub
  , pyserial
  , pyserial-asyncio
  