anchor.diff:  , itemloaders
   , jmespath
   , lxml
  +, packaging
   , parsel
   , protego
   , pydispatcher
  
positive.code: 
  buildPythonPackage rec {
    pname = "scrapy";
    version = "2.6.3";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  
negative.code:     "FileFeedStoragePreFeedOptionsTest"  # https://github.com/scrapy/scrapy/issues/5157
      "test_timeout_download_from_spider_nodata_rcvd"
      "test_timeout_download_from_spider_server_hangs"
      # Depends on uvloop
      "test_asyncio_enabled_reactor_different_loop"
      "test_asyncio_enabled_reactor_same_loop"
      # Fails with AssertionError
      "test_peek_fifo"
      "test_peek_one_element"
  