synapse_port_db

    if postgres_config["name"] != "psycopg2":
        sys.stderr.write("Database must use the 'psycopg2' connector.\n")
        sys.exit(3)

    config = HomeServerConfig()
    config.parse_config_dict(hs_config, "", "")

    def start(stdscr=None):
        if stdscr:
            progress = CursesProgress(stdscr)
        else:
            progress = TerminalProgress()

        porter = Porter(
            sqlite_config=sqlite_config,
            progress=progress,
            batch_size=args.batch_size,
            hs_config=config,
        )

        reactor.callWhenRunning(porter.run)

        reactor.run()

    if args.curses:
        curses.wrapper(start)
    else:
        start()

    if end_error_exec_info:
        exc_type, exc_value, exc_traceback = end_error_exec_info
        traceback.print_exception(exc_type, exc_value, exc_traceback)
        sys.exit(5)