#[error("no parent directory for socket path")]
    NoSocketPathParent,
    #[error("can not create socket parent directory: {0}")]
    CreateSocketPathParent(std::io::Error),

        let socket_path_parent = socket_path.parent().ok_or(Error::NoSocketPathParent)?;
        std::fs::create_dir_all(socket_path_parent).map_err(Error::CreateSocketPathParent)?;