{ pkgs, ... }:

{
  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.systemd-boot.configurationLimit = 5;
  boot.loader.efi.canTouchEfiVariables = true;

  # System-Tuning für JetBrains Tools
  boot.kernel.sysctl = {
    "fs.inotify.max_user_watches" = 1048576;
  };

  # Network
  networking.hostName = "cesium"; # Define your hostname.
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "Europe/Berlin";
  i18n.defaultLocale = "de_DE.UTF-8";
  i18n.extraLocaleSettings = {
    LC_ADDRESS = "de_DE.UTF-8";
    LC_IDENTIFICATION = "de_DE.UTF-8";
    LC_MEASUREMENT = "de_DE.UTF-8";
    LC_MONETARY = "de_DE.UTF-8";
    LC_NAME = "de_DE.UTF-8";
    LC_NUMERIC = "de_DE.UTF-8";
    LC_PAPER = "de_DE.UTF-8";
    LC_TELEPHONE = "de_DE.UTF-8";
    LC_TIME = "de_DE.UTF-8";
  };

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

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "de";
    variant = "";
  };


  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim
    git
    wget
    curl
    htop
    cifs-utils
  ];

  # Shell-Programme
  programs.zsh.enable = true;
  programs.git.enable = true;

  # Flatpak Support
  services.flatpak.enable = true;

  # Sound
  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };

  # 32-bit Support für Steam
  hardware.graphics.enable32Bit = true;
  services.pulseaudio.support32Bit = true;

  # Desktop Environment / Window Manager
  services.xserver.enable = true;
  services.displayManager.gdm.enable = true;
  services.desktopManager.gnome.enable = true;

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

  system.autoUpgrade = {
    enable = true;
    allowReboot = true;
    channel = "https://channels.nixos.org/nixos-25.11";
  };

  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 14d";
  };
  nix.settings.auto-optimise-store = true;
}