{ fetchurl, buildPythonPackage, isPy33, lib, six, pythonAtLeast, pythonOlder }: buildPythonPackage rec { version = "3.2.5"; pname = "nltk"; src = fetchurl { url = "mirror://pypi/n/nltk/nltk-${version}.tar.gz"; sha256 = "2661f9971d983db314bbebd51ba770811a362c6597fd0f303bb1d3beadcb4834"; }; propagatedBuildInputs = [ six ]; disabled = pythonOlder "2.7" || pythonOlder "3.4" && (pythonAtLeast "3.0"); # 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; meta = { description = "Natural Language Processing ToolKit"; homepage = http://nltk.org/; license = lib.licenses.asl20; maintainers = with lib.maintainers; [ lheckemann ]; }; }