anchor.diff:      rev = version;
       sha256 = "1zab55lsw419gg0jfrl69ap6128vbi3wdmg5z7qin65ijpjdhasc";
     };
  -
  -  postPatch = ''
  -    substituteInPlace setup.py \
  -      --replace "version=version_from_git()" "version='${version}'"
  -  '';
   
     propagatedBuildInputs = [
       async-timeout
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , async-timeout
  , docopt
  , pyserial
  
negative.code: buildPythonPackage rec {
    pname = "rflink";
    version = "0.0.58";
    format = "setuptools";
  
    src = fetchFromGitHub {
      owner = "aequitas";
  