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 Byacc(AutotoolsPackage):
      """Berkeley Yacc is an LALR(1) parser generator.  Berkeley Yacc has
      been made as compatible as possible with AT&T Yacc.  Berkeley Yacc
      can accept any input specification that conforms to the AT&T Yacc
      documentation. Specifications that take advantage of undocumented
      features of AT&T Yacc will probably be rejected."""
  
      homepage = "https://github.com/grandseiken/byacc"
      git      = "https://github.com/grandseiken/byacc.git"
  
      version('master', branch='master')
  
      provides('yacc')
  
      depends_on('m4',       type='build')
      depends_on('autoconf', type='build')
      depends_on('automake', type='build')
      depends_on('libtool',  type='build')
  
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 *
  
  
  class Byacc(AutotoolsPackage):
      """Berkeley Yacc is an LALR(1) parser generator.  Berkeley Yacc has
      been made as compatible as possible with AT&T Yacc.  Berkeley Yacc
      can accept any input specification that conforms to the AT&T Yacc
      documentation. Specifications that take advantage of undocumented
      features of AT&T Yacc will probably be rejected."""
  
      homepage = "https://invisible-island.net/byacc/byacc.html"
      url      = "ftp://ftp.invisible-island.net/pub/byacc/byacc-20210808.tgz"
  
      # Check FTP directory ftp://ftp.invisible-island.net/byacc/ to find the latest version
      version('20210808', sha256='f158529be9d0594263c7f11a87616a49ea23e55ac63691252a2304fbbc7d3a83')
  
      provides('yacc')
  
      depends_on('m4',       type='build')
      depends_on('autoconf', type='build')
      depends_on('automake', type='build')
      depends_on('libtool',  type='build')
  
subject: Update byacc (#25837)