old_contents: # Copyright 2013-2019 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 PerlPerlioGzip(PerlPackage):
      """Perl extension to provide a PerlIO layer to gzip/gunzip"""
  
      homepage = "http://search.cpan.org/~nwclark/PerlIO-gzip/gzip.pm"
      url      = "http://search.cpan.org/CPAN/authors/id/N/NW/NWCLARK/PerlIO-gzip-0.19.tar.gz"
  
      version('0.20', '0393eae5d0b23df6cf40ed44af7d711c')
      version('0.19', 'dbcfc1450f6b593b65048b8ced061c98')
  
new_contents: # Copyright 2013-2019 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 PerlPerlioGzip(PerlPackage):
      """Perl extension to provide a PerlIO layer to gzip/gunzip"""
  
      homepage = "http://search.cpan.org/~nwclark/PerlIO-gzip/gzip.pm"
      url      = "http://search.cpan.org/CPAN/authors/id/N/NW/NWCLARK/PerlIO-gzip-0.19.tar.gz"
  
      version('0.20', '0393eae5d0b23df6cf40ed44af7d711c')
      version('0.19', 'dbcfc1450f6b593b65048b8ced061c98')
  
      depends_on('zlib', type='link')
  
      def configure_args(self):
          p = self.spec['zlib'].prefix.include
          return ['INC=-I{0}'.format(p)]
  
subject: add zlib dependency. (#13060)