with import <nixpkgs> {};

buildPythonPackage rec {
  name = "nltk-${version}";
  version = "3.2.1";

  src = fetchurl {
    url = "mirror://pypi/n/nltk/${name}.tar.gz";
    sha256 = "0skxbhnymwlspjkzga0f7x1hg3y50fwpfghs8g8k7fh6f4nknlym";
  };

  propagatedBuildInputs = [ pythonPackages.sqlite3 ];

  meta = with stdenv.lib; {
    homepage = http://www.nltk.org/;
    description = "Natural Language Toolkit is a platform for building Python programs to work with human language data";
    platforms = platforms.all;
    license = licenses.asl20;
  };
}