anchor.diff:  
   buildPythonPackage rec {
     pname = "python-smarttub";
  -  version = "0.0.27";
  +  version = "0.0.28";
     format = "setuptools";
   
     disabled = pythonOlder "3.8";
  
positive.code:     pytestCheckHook
    ];
  
    postPatch = ''
      substituteInPlace setup.py \
        --replace "aiohttp~=3.7.3" "aiohttp>=3.7.4,<4"
    '';
  
    pythonImportsCheck = [
      "smarttub"
    ];
  
negative.code:     owner = "mdz";
      repo = pname;
      rev = "v${version}";
      sha256 = "sha256-dAwOi1hhjGhBGKEp5u3qW5WL1GLHBFac0drIc1Zk6ok=";
    };
  
    propagatedBuildInputs = [
  