def setup_environment():
    """Perform environment setup work. The default setup is a no-op, but this
    function allows the user to specify a Python source file or a module in
    the $DETECTRON2_ENV_MODULE environment variable, that performs
    custom setup work that may be necessary to their computing environment.
    """
    global _ENV_SETUP_DONE
    if _ENV_SETUP_DONE:
        return
    _ENV_SETUP_DONE = True

    _configure_libraries()

    custom_module_path = os.environ.get("DETECTRON2_ENV_MODULE")

    if custom_module_path:
        setup_custom_environment(custom_module_path)
    else:
        # The default setup is a no-op
        pass
Perform environment setup work. The default setup is a no-op, but this
    function allows the user to specify a Python source file or a module in
    the $DETECTRON2_ENV_MODULE environment variable, that performs
    custom setup work that may be necessary to their computing environment.
    
video_chat_text/video_chat_with_StableLM/models/grit_src/third_party/CenterNet2/detectron2/utils/env.py