src/transformers/commands/env.py/EnvironmentCommand/register_subcommand
class EnvironmentCommand:    def register_subcommand(parser: ArgumentParser):
        download_parser = parser.add_parser("env")
        download_parser.set_defaults(func=info_command_factory)
        download_parser.add_argument(
            "--accelerate-config_file",
            default=None,
            help="The accelerate config file to use for the default values in the launching script.",
        )
        download_parser.set_defaults(func=download_command_factory)