anchor.diff:        sha256 = "047w4zwdsnlzmsc5f3rapzbzd2frlvz9nnp8v4b48fjmqmxassh3";
       };
   
  -    propagatedBuildInputs = with self ; [ pytest pytestflakes pytestpep8 tox ];
  +    buildInputs = with self; [ pytest ];
  +    propagatedBuildInputs = with self; [ pytestflakes pytestpep8 tox ];
   
       meta = {
         license = licenses.asl20;
  
positive.code:        sha256 = "003vdkxpx37n0kjqpwgj3314hwk2jfz3nz58db7xh68bf8xy75lk";
       };
  
       propagatedBuildInputs = with self ; [ pytest pep257 ];
  
       meta = {
         homepage = https://github.com/anderslime/pytest-pep257;
  
negative.code:       sha256 = "9c2271654294020e134624020a2144cb93b7334809d70fb3f470cd31ec788a3a";
      };
  
      buildInputs = with self; [ pytestpep8 pytest ];
      propagatedBuildInputs = with self; [ pyflakes pytestcache ];
  
      checkPhase = ''
        py.test test_flakes.py
      '';
  
      meta = {
        license = licenses.mit;
  