old_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 Groff(AutotoolsPackage, GNUMirrorPackage):
      """Groff (GNU troff) is a typesetting system that reads
      plain text mixed with formatting commands and produces
      formatted output. Output may be PostScript or PDF, html, or
      ASCII/UTF8 for display at the terminal."""
  
      homepage = "https://www.gnu.org/software/groff/"
      gnu_mirror_path = "groff/groff-1.22.3.tar.gz"
  
      # TODO: add html variant, spack doesn't have netpbm and its too
      # complicated for me to find out at this point in time.
      # See brew scripts for groff for guidance:
      # https://github.com/Homebrew/homebrew-core/blob/master/Formula/groff.rb
      # Seems troublesome...netpbm requires groff?
      variant('pdf', default=True, description='Build the `gropdf` executable.')
  
      depends_on('gawk',  type='build')
      depends_on('gmake', type='build')
      depends_on('sed',   type='build')
      depends_on('ghostscript', when='+pdf')
  
      version('1.22.3', sha256='3a48a9d6c97750bfbd535feeb5be0111db6406ddb7bb79fc680809cda6d828a5')
  
      # https://savannah.gnu.org/bugs/index.php?43581
      # TODO: figure out why this patch does not actually work for parallel
      # builds reliably.
      # patch('gropdf.patch')
      parallel = False
  
      # The perl interpreter line in scripts might be too long as it has
      # not been transformed yet. Call scripts with spack perl explicitly.
      patch('BuildFoundries.patch')
      patch('pdfmom.patch')
  
      def configure_args(self):
          args = [
              "--without-x"
          ]
          return args
  
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 *
  import re
  
  
  class Groff(AutotoolsPackage, GNUMirrorPackage):
      """Groff (GNU troff) is a typesetting system that reads
      plain text mixed with formatting commands and produces
      formatted output. Output may be PostScript or PDF, html, or
      ASCII/UTF8 for display at the terminal."""
  
      homepage = "https://www.gnu.org/software/groff/"
      gnu_mirror_path = "groff/groff-1.22.3.tar.gz"
  
      # TODO: add html variant, spack doesn't have netpbm and its too
      # complicated for me to find out at this point in time.
      # See brew scripts for groff for guidance:
      # https://github.com/Homebrew/homebrew-core/blob/master/Formula/groff.rb
      # Seems troublesome...netpbm requires groff?
      variant('pdf', default=True, description='Build the `gropdf` executable.')
  
      depends_on('gawk',  type='build')
      depends_on('gmake', type='build')
      depends_on('sed',   type='build')
      depends_on('ghostscript', when='+pdf')
  
      version('1.22.3', sha256='3a48a9d6c97750bfbd535feeb5be0111db6406ddb7bb79fc680809cda6d828a5')
  
      # https://savannah.gnu.org/bugs/index.php?43581
      # TODO: figure out why this patch does not actually work for parallel
      # builds reliably.
      # patch('gropdf.patch')
      parallel = False
  
      # The perl interpreter line in scripts might be too long as it has
      # not been transformed yet. Call scripts with spack perl explicitly.
      patch('BuildFoundries.patch')
      patch('pdfmom.patch')
  
      executables = ['^groff$']
  
      @classmethod
      def determine_version(cls, exe):
          output = Executable(exe)('--version', output=str, error=str)
          match = re.search(r'GNU groff version\s+(\S+)', output)
          return match.group(1) if match else None
  
      def configure_args(self):
          args = [
              "--without-x"
          ]
          return args
  
subject: add support for external detection (#21646)