python3Packages.nltk: run tests

  joblib,

  regex,

  tqdm,

  # preInstallCheck

  nltk,

  # nativeCheckInputs

  matplotlib,

  numpy,

  pyparsing,

  pytestCheckHook,

  pytest-mock,

}:

buildPythonPackage rec {

    tqdm

  ];

  # Tests require some data, the downloading of which is impure. It would

  # probably make sense to make the data another derivation, but then feeding

  # that into the tests (given that we need nltk itself to download the data,

  # unless there's an easy way to download it without nltk's downloader) might

  # be complicated. For now let's just disable the tests and hope for the

  # best.

  doCheck = false;

  # Use new passthru function to pass dependencies required for testing

  preInstallCheck = ''

    export NLTK_DATA=${

      nltk.dataDir (

        d: with d; [

          averaged-perceptron-tagger-eng

          averaged-perceptron-tagger-rus

          brown

          cess-cat

          cess-esp

          conll2007

          floresta

          gutenberg

          inaugural

          indian

          large-grammars

          nombank-1-0

          omw-1-4

          pl196x

          porter-test

          ptb

          punkt-tab

          rte

          sinica-treebank

          stopwords

          tagsets-json

          treebank

          twitter-samples

          udhr

          universal-tagset

          wmt15-eval

          wordnet

          wordnet-ic

          words

        ]

      )

    }

  '';

  nativeCheckInputs = [

    pytestCheckHook

    matplotlib

    numpy

    pyparsing

    pytest-mock

    pkgs.which

  ];

  disabledTestPaths = [

    "nltk/test/unit/test_downloader.py" # Touches network

  ];

  pythonImportsCheck = [ "nltk" ];