{ pkgs, ... }:
{
  imports = [ ./hardware-configuration.nix ];

  # Use flakes.
  nix.settings.experimental-features = "nix-command flakes";

  # Automatic updating.
  system.autoUpgrade.enable = true;
  system.autoUpgrade.dates = "weekly";

  # Automatic cleanup.
  nix.gc.automatic = true;
  nix.gc.dates = "daily";
  nix.gc.options = "--delete-older-than 10d";
  nix.settings.auto-optimise-store = true;

  # Bootloader.
  boot.loader = {
    systemd-boot.enable = true;
    efi.canTouchEfiVariables = true;
  };
  boot.kernelPackages = pkgs.linuxPackages_latest;
  boot.initrd.luks.devices."luks-374c6259-18c4-462b-9f30-9c9648de00ae".device =
    "/dev/disk/by-uuid/374c6259-18c4-462b-9f30-9c9648de00ae";

  networking = {
    hostName = "nixos";
    networkmanager.enable = true;
  };

  # Set your time zone.
  time.timeZone = "Europe/Paris";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_GB.UTF-8";
  i18n.extraLocaleSettings = {
    LC_ADDRESS = "fr_FR.UTF-8";
    LC_IDENTIFICATION = "fr_FR.UTF-8";
    LC_MEASUREMENT = "fr_FR.UTF-8";
    LC_MONETARY = "fr_FR.UTF-8";
    LC_NAME = "fr_FR.UTF-8";
    LC_NUMERIC = "fr_FR.UTF-8";
    LC_PAPER = "fr_FR.UTF-8";
    LC_TELEPHONE = "fr_FR.UTF-8";
    LC_TIME = "fr_FR.UTF-8";
  };

  services.xserver = {
    # Use X11.
    enable = true;
    # Set keyboard layout in X11.
    xkb.layout = "fr";
    xkb.variant = "ergol";
  };
  # Use GNOME.
  services.displayManager.gdm.enable = true;
  services.desktopManager.gnome.enable = true;

  services.gnome.gnome-browser-connector.enable = true;
  # Use CUPS for printing.
  services.printing.enable = true;
  # Use pipewire for audio.
  services.pulseaudio.enable = false;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };
  services.openssh.enable = true;

  # Configure console keymap.
  console.keyMap = "fr";

  # Define a user account.
  users.users.hms = {
    isNormalUser = true;
    description = "hms";
    extraGroups = [
      "networkmanager"
      "wheel"
    ];
    packages = [ ];
  };

  nixpkgs = {
    overlays = [ ];
    config.allowUnfree = true;
  };

  environment.systemPackages = with pkgs; [
    helix
    wget
    gnumake
    clang
  ];

  programs.gnupg.agent = {
    enable = true;
    enableSSHSupport = true;
  };

  system.stateVersion = "25.11";
}