{
  inputs,
  hostname,
  users,
  stateVersion,
}: {pkgs, ...}: {
  # TODO: implement better system, to remove duplicate and add structure
  imports =
    [
      ./hardware-configuration.nix
      ../../system

      # inputs.disko.nixosModules.disko
      ./nvidia.nix
      # ./disko.nix
      (import ./docker.nix {inherit users;})
    ]
    ++ map (username: (import ../../user/${username} {
      inherit username;
      inherit inputs;
      inherit stateVersion;
    }))
    users;

  stylix.enable = true;

  # TODO: organize
  programs.steam = {
    enable = true;
    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
    dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
    localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
  };
  environment.systemPackages = with pkgs; [
    ani-cli
    osu-lazer-bin
  ];

  # Bootloader.
  boot.loader.grub = {
    enable = true;
    device = "/dev/sda";
    useOSProber = true;
    efiSupport = true;
    # efiInstallAsRemovable = true;
  };
  # boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  # TODO: remove duplicate
  networking.hostName = hostname; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Enable networking
  networking.networkmanager.enable = true;

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound with pipewire.
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;

    # use the example session manager (no others are packaged yet so this is enabled by default,
    # no need to redefine it in your config for now)
    #media-session.enable = true;
  };

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  # Install firefox.
  programs.firefox.enable = true;

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  # services.openssh.enable = true;

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;
  # TODO: remove duplicate
  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. Itâ€˜s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = stateVersion; # Did you read the comment?
}
