anchor.diff:  
     postPatch = ''
       # Use latest idna
  -    substituteInPlace setup.py --replace ",<3" ""
  +    substituteInPlace setup.py \
  +      --replace ",<3" ""
     '';
   
     propagatedBuildInputs = [
  
positive.code:   ];
  
    checkInputs = [
      pytest-mock
      pytest-xdist
      pytestCheckHook
  
negative.code: , charset-normalizer
  , fetchPypi
  , idna
  , isPy27
  , isPy3k
  , pysocks
  , pytest-mock
  , pytest-xdist
  , pytestCheckHook
  , trustme
  , urllib3
  }:
  
  buildPythonPackage rec {
    pname = "requests";
    version = "2.27.0";
  
    src = fetchPypi {
      inherit pname version;
      hash = "sha256-jlZDkFvyCjCOJeTB3TeRF8CQAL+KguvMxGLPsbNKFrU=";
    };
  
    patches = [
  