{ config, pkgs, modulesPath, ... }: {
  fileSystems = {
    "/boot" = {
      device = "/dev/disk/by-label/nixos-boot";
      fsType = "vfat";
      options = [ "nofail" "noauto" ];
    };
    "/" = {
      device = "/dev/disk/by-label/nixos-root";
      fsType = "ext4";
    };
  };

  boot.loader.grub.enable = false;

  system.build.rootFileSystem = pkgs.callPackage (modulesPath + "/../lib/make-ext4-fs.nix") {
    storePaths = with pkgs; [
      config.system.build.toplevel
      busybox
    ];
    volumeLabel = "nixos-root";
  };

  # system.build.usbImage = pkgs.callPackage ({ stdenvNoCC }: stdenvNoCC.mkDerivation {
  #   name = "nixos-ps4-usbimage";

  #   nativeBuildInputs = with pkgs; [ mtools ];

  #   buildCommand = ''
  #     mkdir $out
  #     dd if=/dev/zero of=$out/nixos.img bs=1M count=2
  #     mformat -F -i $out/nixos.img ::
  #     mcopy -i $out/nixos.img ${config.system.build.system.kernel}/bzImage
  #   '';
  # }) {};

  boot.initrd.preFailCommands = ''
    export allowShell=1
  '';

  users.users.nixos = {
    isNormalUser = true;
    password = "nixos";
    extraGroups = [ "wheel" ];
  };

  users.defaultUserShell = pkgs.fish;
  programs.fish.enable = true;

  services.getty.autologinUser = "nixos";
}