ENVIRONMENT_DIR = None


def install_environment(repo_cmd_runner):
    """Installation for system type is a noop."""


def run_hook(repo_cmd_runner, hook, file_args):
    return repo_cmd_runner.run(
        ['xargs', hook['entry']] + hook['args'],
        # TODO: this is duplicated in pre_commit/languages/helpers.py
        stdin='\n'.join(list(file_args) + ['']),
        retcode=None,
    )