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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_user_config_dir():
 """ Create the user s-tui config directory if it doesn't exist """

    config_path = get_user_config_dir()

    if not user_config_dir_exists():
        try:
            os.mkdir(config_path)
            os.mkdir(os.path.join(config_path, 'hooks.d'))
        except OSError:
            return None

    return config_path