from __future__ import annotations


def require_module(module_name: str, install_hint: str):
    try:
        return __import__(module_name)
    except ModuleNotFoundError as exc:
        if exc.name == module_name:
            raise RuntimeError(
                f"Missing dependency '{module_name}'. Install it with: {install_hint}"
            ) from exc
        raise


def require_cv2():
    return require_module("cv2", "pip install opencv-python")