new_contents: # Copyright 2013-2021 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 import *
  
  
  class Mpl(CMakePackage):
      """A C++17 message passing library based on MPI."""
  
      homepage    = "https://rabauke.github.io/mpl/html/"
      git         = "https://github.com/rabauke/mpl.git"
      url         = "https://github.com/rabauke/mpl/archive/refs/tags/v0.1.tar.gz"
      maintainers = ['rabauke']
  
      version('develop', branch='master')
      version('0.1', tag='v0.1')
  
      depends_on('mpi')
  
subject: add new package (#26522)