I installed a CH from debian repos (just copied from docs) and installation process asking me for a password, I typed my testing password ended by "();" witouth quotes.

After install I can access without any password.

users.xml show like "<password></password>" for default user.

¯\\\_(ツ)\_/¯

{
    po::options_description desc;
    desc.add_options()
        ("help,h", "produce help message")
        ("binary-path", po::value<std::string>()->default_value("/usr/bin"), "directory with binary")
        ("config-path", po::value<std::string>()->default_value("/etc/clickhouse-server"), "directory with configs")
        ("pid-path", po::value<std::string>()->default_value("/var/run/clickhouse-server"), "directory for pid file")