anchor.diff:  buildPythonPackage rec {
     pname = "itemloaders";
     version = "1.0.4";
  -
  -  disabled = isPy27;
  +  disabled = pythonOlder "3.6";
   
     # Tests not included in PyPI tarball
     src = fetchFromGitHub {
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , isPy27
  , w3lib
  , parsel
  , jmespath
  
negative.code: 
    checkInputs = [ pytestCheckHook ];
  
    disabledTests = [
      # Test are failing (AssertionError: Lists differ: ...)
      "test_nested_css"
      "test_nested_xpath"
    ];
  
    pythonImportsCheck = [ "itemloaders" ];
  
    meta = with lib; {
      description = "Base library for scrapy's ItemLoader";
      homepage = "https://github.com/scrapy/itemloaders";
  