{
  config, 
  pkgs,
  ...
}: {
  imports = [
    ./ssh.nix
    ./lxc.nix
    # ./disko-config.nix
  ];

  # Set your time zone.
  time.timeZone = "America/New_York";
  # time.timeZone = "Asia/Seoul";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_US.UTF-8";
    LC_IDENTIFICATION = "en_US.UTF-8";
    LC_MEASUREMENT = "en_US.UTF-8";
    LC_MONETARY = "en_US.UTF-8";
    LC_NAME = "en_US.UTF-8";
    LC_NUMERIC = "en_US.UTF-8";
    LC_PAPER = "en_US.UTF-8";
    LC_TELEPHONE = "en_US.UTF-8";
    LC_TIME = "en_US.UTF-8";
  };

  nixpkgs.config.allowUnfree = true; # unfreeeeee

  nix = {
    nixPath = [
      "nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos"
      "nixos-config=/home/synchronous/nix-cfg/configuration.nix"
      "/nix/var/nix/profiles/per-user/root/channels"
    ];

    settings = {
      experimental-features = ["nix-command" "flakes"];
      substituters = [
        "https://nix-community.cachix.org"
      ];
      trusted-public-keys = [
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
      ];
    };
  };

  services.xserver.enable = true;
  networking.networkmanager.enable = true;
  services.xserver.displayManager.lightdm.enable = true;
  services.xserver.desktopManager.xfce.enable = true;

  system.stateVersion = "25.11";

  environment.systemPackages = with pkgs; [
    vim
    # neovim
    linux-manual
    man-pages
    man-pages-posix
    fontconfig
    python3
    tree
    yq
  ];

  fonts = {
    enableDefaultPackages = true;
    packages = with pkgs; [
      corefonts
      fira-code
      fira-code-symbols
      # font-awesome_4
      # font-awesome_5
      # inconsolata
      # ipaexfont
      # jetbrains-mono
      # noto-fonts-cjk-sans
      # noto-fonts-cjk-serif
      # siji
      # ubuntu_font_family
      # noto-fonts-cjk-sans
      # b612
      # nerd-fonts.noto
      # nerd-fonts.mplus
      nerd-fonts.jetbrains-mono
      noto-fonts-color-emoji
    ];

    # fontDir.enable = true;

    fontconfig = {
      enable = true;
      defaultFonts = {
        monospace = ["Fira Code"];
      };
    };
  };
}