text: # 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 os
  
  
  class Madgraph5amc(Package):
      """MadGraph5_aMC@NLO is a framework that aims at providing
         all the elements necessary for SM and BSM phenomenology,
         such as the computations of cross sections, the generation
         of hard events and their matching with event generators,
         and the use of a variety of tools relevant to
         event manipulation and analysis. """
  
      homepage = "https://launchpad.net/mg5amcnlo"
      url      = "https://launchpad.net/mg5amcnlo/2.0/2.7.x/+download/MG5_aMC_v2.7.3.tar.gz"
  
      tags = ['hep']
  
      version('2.8.1', sha256='acda34414beba201e529b8c03f87f4893fb3f99ed2956a131d60a387e76c5b8c',
              url="https://launchpad.net/mg5amcnlo/2.0/2.8.x/+download/MG5_aMC_v2.8.1.tar.gz")
      version('2.8.0', sha256='e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855',
              url="https://launchpad.net/mg5amcnlo/2.0/2.8.x/+download/MG5_aMC_v2.8.0.tar.gz")
      version('2.7.3.py3', sha256='400c26f9b15b07baaad9bd62091ceea785c2d3a59618fdc27cad213816bc7225')
      version('2.7.3.py2', sha256='0b665356f4d9359e6e382e0f408dc11db594734567c6b2f0ec0e0697f2dbe099',
              url="https://launchpad.net/mg5amcnlo/2.0/2.7.x/+download/MG5_aMC_v2.7.3.tar.gz")
  
      variant('atlas', default=False, description='Apply changes requested by ' +
              "the ATLAS experimenent on LHC")
      variant('ninja', default=False, description='Use external installation' +
              " of Ninja")
      variant('collier', default=False, description='Use external installation' +
              ' of Collier')
  
      conflicts('%gcc@10:', when='@2.7.3')
  
      depends_on('syscalc')
      depends_on('gosam-contrib', when='+ninja')
      depends_on('collier', when='+collier')
      depends_on('lhapdf')
      depends_on('fastjet')
      depends_on('py-six', when='@2.7.3.py3,2.8.0:', type=('build', 'run'))
  
      depends_on('python@2.7.0:2.8.0', when='@2.7.3.py2', type=('build', 'run'))
      depends_on('python@3.7:', when='@2.7.3.py3', type=('build', 'run'))
      depends_on('python@2.7.0:2.8.0,3.7:', when='@2.8.0:', type=('build', 'run'))
  
      patch('madgraph5amc.patch', level=0)
      patch('madgraph5amc-2.7.3.atlas.patch', level=0, when='@2.7.3.py2+atlas')
      patch('madgraph5amc-2.7.3.atlas.patch', level=0, when='@2.7.3.py3+atlas')
      patch('madgraph5amc-2.8.0.atlas.patch', level=0, when='@2.8.0+atlas')
      patch('madgraph5amc-2.8.0.atlas.patch', level=0, when='@2.8.1+atlas')
  
      phases = ['edit', 'build', 'install']
  
      def edit(self, spec, prefix):
          def set_parameter(name, value):
              config_files.filter('^#?[ ]*' + name + '[ ]*=.*$',
                                  name + ' = ' + value,
                                  ignore_absent=True)
  
          config_files = FileFilter(join_path("input",
                                              ".mg5_configuration_default.txt"),
                                    join_path("input", "mg5_configuration.txt"))
  
          set_parameter('syscalc_path', spec['syscalc'].prefix.bin)
  
          if '+ninja' in spec:
              set_parameter('ninja', spec['gosam-contrib'].prefix)
  
          if '+collier' in spec:
              set_parameter('collier', spec['collier'].prefix.lib)
  
          set_parameter('output_dependencies', 'internal')
          set_parameter('lhapdf', join_path(spec['lhapdf'].prefix.bin,
                        'lhapdf-config'))
          set_parameter('fastjet', join_path(spec['fastjet'].prefix.bin,
                                             'fastjet-config'))
  
          set_parameter('automatic_html_opening', 'False')
  
      def build(self, spec, prefix):
          with working_dir(join_path('vendor', 'CutTools')):
              make(parallel=False)
  
          with working_dir(join_path('vendor', 'StdHEP')):
              make(parallel=False)
  
          if '+atlas' in spec:
              if os.path.exists(join_path('bin', 'compile.py')):
                  compile_py = Executable(join_path('bin', 'compile.py'))
              else:
                  compile_py = Executable(join_path('bin', '.compile.py'))
  
              compile_py()
  
      def install(self, spec, prefix):
          def installdir(dirname):
              install_tree(dirname, join_path(prefix, dirname))
  
          def installfile(filename):
              install(filename, join_path(prefix, filename))
  
          for p in os.listdir(self.stage.source_path):
              if os.path.isdir(p):
                  installdir(p)
              else:
                  if p != 'doc.tgz':
                      installfile(p)
                  else:
                      mkdirp(prefix.share)
                      install(p, join_path(prefix.share, p))
  
          install(join_path('Template', 'LO', 'Source', '.make_opts'),
                  join_path(prefix, 'Template', 'LO',
                            'Source', 'make_opts'))
  