anchor.diff:  
   buildPythonPackage rec {
     pname = "omnikinverter";
  -  version = "0.7.0";
  +  version = "0.8.1";
     format = "pyproject";
   
     disabled = pythonOlder "3.9";
  
positive.code: { lib
  , aiohttp
  , aresponses
  , buildPythonPackage
  , fetchFromGitHub
  , poetry-core
  
negative.code: 
    checkInputs = [
      aresponses
      asynctest
      pytest-asyncio
      pytestCheckHook
    ];
  