code: def setup_parser_common(parser):
      
      from rez.build_process_ import get_build_process_types
      from rez.build_system import get_valid_build_systems
  
      process_types = get_build_process_types()
      parser.add_argument(
          "--process", type=str, choices=process_types, default="local",
          help="the build process to use (default: %(default)s).")
  
      # add build system choices valid for this package
      package = get_current_developer_package()
      clss = get_valid_build_systems(os.getcwd(), package=package)
  
      if clss:
          if len(clss) == 1:
              cls_ = clss[0]
              title = "%s build system arguments" % cls_.name()
              group = parser.add_argument_group(title)
              cls_.bind_cli(parser, group)
  
          types = [x.name() for x in clss]
      else:
          types = None
  
      parser.add_argument(
          "-b", "--build-system", dest="buildsys", choices=types,
          help="the build system to use. If not specified, it is detected. Set "
          "'build_system' or 'build_command' to specify the build system in the "
          "package itself.")
  
      parser.add_argument(
          "--variants", nargs='+', type=int, metavar="INDEX",
          help="select variants to build (zero-indexed).")
      parser.add_argument(
          "--ba", "--build-args", dest="build_args", metavar="ARGS",
          help="arguments to pass to the build system. Alternatively, list these "
          "after a '--'.")
      parser.add_argument(
          "--cba", "--child-build-args", dest="child_build_args", metavar="ARGS",
          help="arguments to pass to the child build system, if any. "
          "Alternatively, list these after a second '--'.")
docs: Parser setup common to both rez-build and rez-release.