{...}: {
  services.openssh = {
    enable = true;
    settings.PasswordAuthentication = false;
    hostKeys = [
      {
        # See the explanation for this in /system/impermanence/mods/openssh.nix
        # path = "/var/lib/sshd/ssh_host_ed25519_key";

        # FIXME: Remove this workaround
        path = "/srv/var/lib/sshd/ssh_host_ed25519_key";
        rounds = 1000;
        type = "ed25519";
      }
    ];
  };
}