text: ##############################################################################
  # Copyright (c) 2013-2018, 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 *
  import glob
  import os
  
  
  class Kraken(Package):
      """Kraken is a system for assigning taxonomic labels to short DNA
         sequences, usually obtained through metagenomic studies."""
  
      homepage = "https://ccb.jhu.edu/software/kraken/"
      url      = "https://github.com/DerrickWood/kraken/archive/v1.0.tar.gz"
  
      version('1.0', 'e790d6b09662bbd810aa34517ef66586')
  
      depends_on('perl', type=('build', 'run'))
      # Does NOT support JELLYFISH 2.0. Ver 1.1.11 is the last version of
      # JELLYFISH 1.
      depends_on('jellyfish@1.1.11', when='@1.0')
  
      def install(self, spec, prefix):
          installer = Executable('./install_kraken.sh')
          installer(self.stage.source_path)
          mkdirp(prefix.bin)
          files = glob.iglob('*')
          for file in files:
              if os.path.isfile(file):
                  install(file, prefix.bin)
  