{ pkgs, privateFiles, lib, ... }:
{
  config = {
    services.backup.profiles.system = {
      rootDir = "/var/lib";
      excludeFile = lib.mkAfter ''
        + /var/lib/nixos
        + /var/lib/udev
        + /var/lib/udisks2
        + /var/lib/systemd
        + /var/lib/private/systemd
        - /var/lib
        '';
    };
    nixpkgs.overlays = builtins.attrValues (import ../../overlays);
    _module.args = {
      pkgsNext = import <nixpkgsNext> {};
      pkgsPrevious = import <nixpkgsPrevious> {};
      myconfig = {
        inherit privateFiles;
        env = import "${privateFiles}/environment.nix";
      };
    };

    services.journald.extraConfig = ''
      MaxLevelStore="warning"
      MaxRetentionSec="1year"
      '';

    users.users.root.packages = [
      pkgs.telnet
      pkgs.htop
      pkgs.iftop
    ];

    environment.systemPackages = [
      pkgs.vim
    ];

  };
}