##############################################################################
# Copyright (c) 2013-2017, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/spack/spack
# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
from spack import *


class PyTyping(PythonPackage):
    """This is a backport of the standard library typing module to Python
    versions older than 3.6."""

    homepage = "https://docs.python.org/3/library/typing.html"
    url      = "https://pypi.io/packages/source/t/typing/typing-3.6.1.tar.gz"

    import_modules = ['typing']

    version('3.6.1', '3fec97415bae6f742fb3c3013dedeb89')

    # You need Python 2.7 or 3.3+ to install the typing package
    depends_on('python@2.7:2.8,3.3:', type=('build', 'run'))