old_contents: ##############################################################################
  # Copyright (c) 2013-2016, 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/llnl/spack
  # Please also see the LICENSE file 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 Nextflow(Package):
      """Data-driven computational pipelines"""
  
      homepage = "http://www.nextflow.io"
  
      version('0.20.1', '0e4e0e3eca1c2c97f9b4bffd944b923a',
              url='https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow',
              expand=False)
  
      depends_on('jdk')
  
      def unpack(self):
          pass
  
      def install(self, spec, prefix):
          mkdirp(prefix.bin)
          install("nextflow", join_path(prefix.bin, "nextflow"))
          set_executable(join_path(prefix.bin, "nextflow"))
  
new_contents: ##############################################################################
  # Copyright (c) 2013-2016, 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/llnl/spack
  # Please also see the LICENSE file 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 Nextflow(Package):
      """Data-driven computational pipelines"""
  
      homepage = "http://www.nextflow.io"
  
      version('0.20.1', '0e4e0e3eca1c2c97f9b4bffd944b923a',
              url='https://github.com/nextflow-io/nextflow/releases/download/v0.20.1/nextflow',
              expand=False)
  
      depends_on('jdk')
  
      def install(self, spec, prefix):
          mkdirp(prefix.bin)
          install("nextflow", join_path(prefix.bin, "nextflow"))
          set_executable(join_path(prefix.bin, "nextflow"))
  
subject: Remove useless `def unpack`