{ config, lib, pkgs, ... }:

{
  imports = [];
  boot.supportedFilesystems = [ "zfs" ];
  boot.loader = {

    /*
    efi = {
      canTouchEfiVariables = true;
      efiSysMountPoint = "/boot/efi";
      efiInstallAsRemovable = false;
    };
    */

    grub = {
      enable = true;
      version = 2;
      copyKernels = true;
      # efiSupport = true;
      devices = [
        "/dev/disk/by-id/ata-Samsung_SSD_840_EVO_250GB_S1DBNSAF340110R"
      ];
      /*
      mirroredBoots = [
        $(bootnum=""
        for disk_id in "${zfs_pool_disks[@]}"
        do
        echo ""
        ((bootnum++))
        done)
        { devices = [ "${disk_id}" ];
          path    = "/boot${bootnum}";
        }
      ];
      */
    };
  };

  # The 32-bit host id of the machine, formatted as 8 hexadecimal characters.
  # You should try to make this id unique among your machines.
  # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
  networking.hostId = "69c40b03";

  # noop, the recommended elevator with zfs.
  # shell_on_fail allows to force import manually in the case of zfs import failure.
  boot.kernelParams = [
    "elevator=noop"
    "boot.shell_on_fail"
  ];

  # FIXME: Uncomment [on a working system] to ensure extra safeguards are active that zfs uses to protect zfs pools:
  #boot.zfs.forceImportAll = false;
  #boot.zfs.forceImportRoot = false;

  boot.zfs.enableUnstable = true;
  boot.zfs.requestEncryptionCredentials = true;

  # Enables periodic scrubbing of ZFS pools.
  services.zfs.autoScrub.enable = true;

  /*
  # Enable the (OpenSolaris-compatible) ZFS auto-snapshotting service.
  services.zfs.autoSnapshot = {
    enable   = true;
    frequent = ;
    hourly   = ;
    daily    = ;
    weekly   = ;
    monthly  = ;
  };
  */


/*
etc/systemd/system/zfs-import-bpool.service
[Unit]
DefaultDependencies=no
Before=zfs-import-scan.service
Before=zfs-import-cache.service

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/sbin/zpool import -N -o cachefile=none bpool

[Install]
WantedBy=zfs-import.target

systemctl enable zfs-import-bpool.service
*/

}