{ config, lib, ... }: with import ; { fileSystems = { "/backups" = { device = "/dev/pool/backup"; fsType = "ext4"; }; }; users.users.backup = { useDefaultShell = true; home = "/backups"; createHome = true; openssh.authorizedKeys.keys = with config.krebs.hosts; [ mors.ssh.pubkey prism.ssh.pubkey blue.ssh.pubkey ]; }; }