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