# Copyright 2013-2023 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 ManyVirtualConsumer(Package): """PAckage that depends on many virtual packages""" url = "http://www.example.com/" url = "http://www.example.com/2.0.tar.gz" version("1.0", md5="abcdef1234567890abcdef1234567890") depends_on("mpi") depends_on("lapack") # This directive is an example of imposing a constraint on a # dependency is that dependency is in the DAG. This pattern # is mainly used with virtual providers. depends_on("low-priority-provider@1.0", when="^[virtuals=mpi,lapack] low-priority-provider")