anchor.diff:  { lib
   , buildPythonPackage
   , fetchPypi
  -, fetchpatch
   , setuptools-scm
   , aiohttp
   , pytest
  
positive.code: 
    meta = with lib; {
      homepage = "https://github.com/aio-libs/pytest-aiohttp/";
      description = "Pytest plugin for aiohttp support";
      license = licenses.asl20;
      maintainers = with maintainers; [ dotlambda ];
  
negative.code: 
  buildPythonPackage rec {
    pname = "pytest-aiohttp";
    version = "1.0.4";
  
    format = "setuptools";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "39ff3a0d15484c01d1436cbedad575c6eafbf0f57cdf76fb94994c97b5b8c5a4";
    };
  
    nativeBuildInputs = [
      setuptools-scm
    ];
  
    SETUPTOOLS_SCM_PRETEND_VERSION = version;
  
    buildInputs = [
      pytest
    ];
  
    propagatedBuildInputs = [
      aiohttp
      pytest-asyncio
    ];
  
  