anchor.diff:  
     nativeBuildInputs = [ installShellFiles pbr ];
   
  -  # TODO: Add missing check inputs (2019-11-22):
  -  # - stestr
  -  doCheck = false;
  -  checkInputs = [ flake8 mock pycodestyle pylint tox ];
  +  checkInputs = [ flake8 mock pycodestyle pylint stestr tox ];
   
     postInstall = ''
         installShellCompletion --bash --name git-machete completion/git-machete.completion.bash
  
positive.code:     description = "Git repository organizer and rebase/merge workflow automation tool";
      license = licenses.mit;
      platforms = platforms.all;
      maintainers = [ maintainers.blitz ];
    };
  }
  
negative.code: { lib, buildPythonApplication, fetchPypi
  , installShellFiles, pbr
  , flake8, mock, pycodestyle, pylint, stestr, tox
  , nix-update-script
  , testVersion, git-machete
  }:
  