anchor.diff:  { lib
   , buildPythonPackage
   , fetchFromGitHub
  +, fetchpatch
   , pytestCheckHook
   , nose
   , pythonOlder
  
positive.code:     owner = "angr";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-D1YssHa14q2jxn4HtOYZlTdwGPkiiMhWuOh08fj87ic=";
    };
  
    checkInputs = [
      nose
      pytestCheckHook
    ];
  
    pythonImportsCheck = [
  
negative.code: 
  buildPythonPackage rec {
    pname = "archinfo";
    version = "9.1.12332";
    format = "setuptools";
  
    disabled = pythonOlder "3.6";
  