anchor.diff:    pname = "sigtools";
     version = "4.0.1";
     format = "pyproject";
  +
  +  disabled = pythonOlder "3.4";
   
     src = fetchPypi {
       inherit pname version;
  
positive.code:     attrs
    ];
  
    patchPhase = ''sed -i s/test_suite="'"sigtools.tests"'"/test_suite="'"unittest2.collector"'"/ setup.py'';
  
    # repeated_test no longer exists in nixpkgs
    # Also see: https://github.com/epsy/sigtools/issues/26
    doCheck = false;
    checkInputs = [ sphinx mock coverage unittest2 ];
  
    meta = with lib; {
      description = "Utilities for working with 3.3's inspect.Signature objects.";
  
negative.code: { lib
  , buildPythonPackage
  , fetchPypi
  , pythonOlder
  , sphinx
  , mock
  , repeated-test
  , unittestCheckHook
  , attrs
  , setuptools-scm
  }:
  
  