anchor.diff:  { lib
   , buildPythonPackage
   , fetchFromGitHub
  +, dacite
   , pysnmplib
   , pytest-asyncio
   , pytest-error-for-skips
  
positive.code: 
  buildPythonPackage rec {
    pname = "brother";
    version = "1.2.3";
    format = "setuptools";
  
    disabled = pythonOlder "3.8";
  
negative.code:     owner = "bieniu";
      repo = pname;
      rev = "refs/tags/${version}";
      hash = "sha256-pk9VBFha2NfQWI+fbWwGKcGFa93eKr5Cqh85r1CAXpI=";
    };
  
    propagatedBuildInputs = [
      dacite
      pysnmplib
    ];
  
  