new_contents: ##############################################################################
  # 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 RRprojroot(RPackage):
      """Robust, reliable and flexible paths to files below a project root.
      The 'root' of a project is defined as a directory that matches a
      certain criterion, e.g., it contains a certain regular file."""
  
      homepage = "https://cran.r-project.org/package=rprojroot"
      url      = "https://cran.rstudio.com/src/contrib/rprojroot_1.2.tar.gz"
      list_url = "https://cran.rstudio.com/src/contrib/Archive/rprojroot"
  
      version('1.2', 'c1a0574aaac2a43a72f804abbaea19c3')
  
      depends_on('r-backports', type=('build', 'run'))
      depends_on('r@3.0.0:')
  
subject: Create new package. (#6505)