b596fa33d6b03bb858cf6599c1d37cb4a182af33,homeassistant/__main__.py,,main,#,207

Before Change

    else:
        config_file = ensure_config_file(config_dir)
        print("Config directory:", config_dir)
        hass = bootstrap.from_config_file(
            config_file, daemon=args.daemon, verbose=args.verbose,
            skip_pip=args.skip_pip, log_rotate_days=args.log_rotate_days)

    if args.open_ui:
        def open_browser(event):
             Open the webinterface in a browser. 
            if hass.config.api is not None:
                import webbrowser
                webbrowser.open(hass.config.api.base_url)

        hass.bus.listen_once(EVENT_HOMEASSISTANT_START, open_browser)

    hass.start()
    hass.block_till_stopped()

if __name__ == "__main__":
    main()

After Change

    // Run hass is child process. Restart if necessary.
    keep_running = True
    while keep_running:
        hass_proc = Process(target=setup_and_run_hass, args=(config_dir, args))
        keep_running = run_hass_process(hass_proc)


if __name__ == "__main__":
    main()

Instances