anchor.diff:        url = "mirror://pypi/p/${pname}/${name}.tar.gz";
         sha256 = "093f5fa479ee6201e48db367c307531dc8b800609b0c3ddca9c01e0fd466a669";
       };
  -    buildInputs = with self; [ pytestcov mock cmdline ];
  -    propagatedBuildInputs = with self; [ pytest-fixture-config pytest-shutil pytest ];
  +    buildInputs = with self; [ pytest pytestcov mock cmdline ];
  +    propagatedBuildInputs = with self; [ pytest-fixture-config pytest-shutil ];
       checkPhase = '' py.test tests/unit '';
       meta = {
         description = "Create a Python virtual environment in your test that cleans up on teardown. The fixture has utility methods to install packages and list what’s installed.";
  
positive.code:       sha256 = "1x9ixika7wqjj52x8wnsh1vk7jadkdqpx01plj7mlh8slwyq4s41";
      };
  
      propagatedBuildInputs = with self; [ pytest ];
      buildInputs = with self; [ mock ];
  
      # waiting for feedback https://github.com/box/flaky/issues/97
      doCheck = false;
  
negative.code:         sed 's/==/>=/' -i setup.py
      '';
  
      buildInputs = with self; [ pytest ];
      propagatedBuildInputs = with self; [ six clint pyyaml docopt requests2 jsonpatch args ];
  
      meta = with stdenv.lib; {
        description = "A python wrapper for the various Internet Archive APIs";
  