anchor.diff:  , nodePackages
   , oauthlib
   , certipy
  +, jupyter-telemetry
   }:
   
   let
  
positive.code:   propagatedBuildInputs = [
      alembic ipython jinja2 pamela python-oauth2 requests sqlalchemy tornado
      traitlets prometheus_client async_generator notebook certipy oauthlib
    ];
  
    # Disable tests because they take an excessive amount of time to complete.
  
negative.code: 
  buildPythonPackage rec {
    pname = "jupyterhub";
    version = "1.1.0";
    disabled = pythonOlder "3.5";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "1mqknz0rxqzx4nc57vscvfh2d4znzlzpy83ancqxdaq3b8i70al5";
    };
  
    # Most of this only applies when building from source (e.g. js/css assets are
  