{ config, lib, pkgs, ... }:
{
  imports =
    [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
    ];

  boot.initrd.availableKernelModules = [ "ehci_pci" "ahci" "usb_storage" "sd_mod" "sdhci_pci" ];
  boot.initrd.kernelModules = [ "dm-snapshot" ];
  boot.kernelModules = [ "kvm-intel" ];
  boot.extraModulePackages = [ ];

  # grub configuration
  # ------------------
  boot.loader.grub = {
    device  = "/dev/sda";
    enable  = true;
    version = 2;
  };

  # lvm volume group
  # ----------------
  boot.initrd.luks.devices = [
    {
      name   = "vg";
      device = "/dev/sda2";
      preLVM = true;
    }
  ];

  # NTFS support
  # ------------
  environment.systemPackages = [
    pkgs.ntfs3g
  ];

  # root
  # ----
  fileSystems."/" = {
    options = [ "noatime" "nodiratime" "discard" ];
    device  = "/dev/vg/root";
    fsType  = "ext4";
  };

  # boot
  # ----
  fileSystems."/boot" = {
    device = "/dev/sda1";
    fsType = "ext4";
  };

  # automount
  # ---------
  fileSystems."/media" = {
    device = "/dev/disk/by-uuid/162c2f9e-8baa-4433-99fd-bb7e7b69472f";
    fsType = "ext4";
    options = [
      "nofail"
      "noauto"
      #"x-systemd.device-timeout=1ms"
    ];
  };
  systemd.mounts = [
    {
      enable = true;
      options = "nofail,noauto";
      type = "ext4";
      wantedBy = ["multi-user.target"];
      what = "/dev/disk/by-uuid/162c2f9e-8baa-4433-99fd-bb7e7b69472f";
      where = "/media";
    }
  ];

  swapDevices = [ ];

  nix.maxJobs = lib.mkDefault 4;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
}