from __future__ import annotations

import sys
from typing import Optional


def main(argv: Optional[list[str]] = None) -> None:
    del argv
    sys.exit(
        "ELMpythonator no longer runs standalone. "
        "Use `pymulator --elm327` (ELM327/STN2xxx TCP service) instead."
    )


if __name__ == "__main__":
    main()
