anchor.diff:      "test_read_boundary_with_incomplete_chunk"
       "test_read_incomplete_chunk"
       "test_request_tracing_exception"
  +  ] ++ lib.optionals stdenv.isDarwin [
  +    "test_close"
     ];
   
     # aiohttp in current folder shadows installed version
  
positive.code: , pytestrunner
  , pytestCheckHook
  , gunicorn
  , pytest-timeout
  , async_generator
  , pytest_xdist
  , pytestcov
  
negative.code: , buildPythonPackage
  , fetchPypi
  , pythonOlder
  , attrs
  , chardet
  , multidict
  