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nixpkgs/pkgs/development/python-modules/nltk/default.nix

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{ fetchurl, buildPythonPackage, lib, six, pythonAtLeast, pythonOlder }:
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buildPythonPackage rec {
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version = "3.2.5";
pname = "nltk";
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src = fetchurl {
url = "mirror://pypi/n/nltk/nltk-${version}.tar.gz";
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sha256 = "2661f9971d983db314bbebd51ba770811a362c6597fd0f303bb1d3beadcb4834";
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};
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 ];
};
}