anchor.diff:      dash-html-components
       dash-table
     ];
  +
  +  passthru.optional-dependencies = {
  +    celery = [
  +      celery
  +      redis
  +    ];
  +    diskcache = [
  +      diskcache
  +      multiprocess
  +      psutil
  +    ];
  +  };
   
     checkInputs = [
       pytestCheckHook
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , plotly
  , flask
  , flask-compress
  , dash-core-components
  , dash-html-components
  , dash-table
  , pytest-mock
  , mock
  , pyyaml
  , pytestCheckHook
  , pythonOlder
  }:
  
  buildPythonPackage rec {
  
negative.code:     "tests/integration"
    ];
  
    pythonImportsCheck = [
      "dash"
    ];
  
    meta = with lib; {
      description = "Python framework for building analytical web applications";
      homepage = "https://dash.plot.ly/";
      license = licenses.mit;
      maintainers = with maintainers; [ antoinerg ];
    };
  }
  