anchor.diff:      email_validator
       freezegun
       pytest
  -    random2
       ukpostcodeparser
       validators
     ]
  
positive.code: 
  buildPythonPackage rec {
    pname = "Faker";
    version = "4.17.1";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "d4183b8f57316de3be27cd6c3b40e9f9343d27c95c96179f027316c58c2c239e";
    };
  
    nativeBuildInputs = [ pytestrunner ];
  
negative.code:   , more-itertools
    , pytest
    , pytestrunner
    , ukpostcodeparser
    , validators
  }:
  