for lang_path in get_lang_paths():
        if lang_path.is_dir() and lang_path.name.startswith(incomplete):
            yield lang_path.name


@app.callback()
def callback() -> None:
    # For MacOS with Cairo
    os.environ["DYLD_FALLBACK_LIBRARY_PATH"] = "/opt/homebrew/lib"


@app.command()
def new_lang(lang: str = typer.Argument(..., callback=lang_callback)):
    """

* 📝 Remove mention of Celery in the project generators. PR [#12742](https://github.com/fastapi/fastapi/pull/12742) by [@david-caro](https://github.com/david-caro).
* 📝 Update includes in `docs/en/docs/tutorial/header-param-models.md`. PR [#12814](https://github.com/fastapi/fastapi/pull/12814) by [@zhaohan-dong](https://github.com/zhaohan-dong).