anchor.diff:  , buildPythonPackage
   , fetchFromGitHub
   , isPy3
  -, pythonPackages
  +, lib
   
   , acme
   , ConfigArgParse
  
positive.code: , zope-interface
  }:
  
  buildPythonPackage rec {
    name = "certbot-${version}";
    version = "0.8.1";
  
    src = fetchFromGitHub {
      version = 1;
  
negative.code:   disabled = isPy3;
    doCheck = true;
  
    meta = with lib; {
      description = "EFF's tool to obtain certs from Let's Encrypt";
      homepage = https://github.com/certbot/certbot;
      license = licenses.asl20;
  