anchor.diff:  { lib
   , buildPythonPackage
   , fetchPypi
  +, isPy37
   , docutils
   , nose
  -, stdenv
  -, flake8
  -, pyyaml
   , testtools
   }:
   
  
positive.code:     homepage = https://github.com/twolfson/restructuredtext-lint;
      license = lib.licenses.unlicense;
    };
  }
negative.code:   pname = "restructuredtext_lint";
    version = "1.2.2";
  
    # https://github.com/twolfson/restructuredtext-lint/pull/47
    disabled = isPy37;
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "82880a8de8a41bfc84f533744091b1ead8e2ab9ad6c0a3f60f4750ef6c802350";
    };
  
    checkInputs = [ nose testtools ];
    propagatedBuildInputs = [ docutils ];
  
    checkPhase = ''
      nosetests --nocapture
    '';
  
    meta = {
  