{ lib, config, ... }:
{
  _class = "nixos";

  # Use the same default hostID as the NixOS install ISO and nixos-anywhere.
  # This allows us to import zfs pool without using a force import.
  # ZFS has this as a safety mechanism for networked block storage (ISCSI), but
  # in practice we found it causes more breakages like unbootable machines,
  # while people using ZFS on ISCSI is quite rare.
  networking.hostId = lib.mkDefault "8425e349";

  services.zfs = lib.mkIf (config.boot.zfs.enabled) {
    autoSnapshot.enable = true;
    # defaults to 12, which is a bit much given how much data is written
    autoSnapshot.monthly = lib.mkDefault 1;
    autoScrub.enable = true;
  };
}