import sys


def main() -> int:
    try:
        from .ui.app import App
    except (ImportError, ValueError) as e:
        sys.stderr.write(
            f"Could not load GTK4/libadwaita via PyGObject ({e}).\n"
            "Install the system packages (e.g. python3-gobject, gtk4, libadwaita) — no pip needed.\n"
            "If you use a venv, create it with --system-site-packages.\n")
        return 1
    return App().run(sys.argv)


if __name__ == "__main__":
    sys.exit(main())