# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack.package import *


class ConditionalVirtualDependency(Package):
    """Brings in a virtual dependency if certain conditions are met."""
    homepage = "https://dev.null"

    version('1.0')

    variant('stuff', default=True, description='nope')
    variant('mpi', default=False, description='nope')

    depends_on('stuff', when='+stuff')
    depends_on('mpi', when='+mpi')