{ ... }:
{
  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      extra-substituters = [ "https://vicinae.cachix.org" ];
      extra-trusted-public-keys = [ "vicinae.cachix.org-1:1kDrfienkGHPYbkpNj1mWTr7Fm1+zcenzgTizIcI3oc=" ];
    };
  };


  # Localization settings
  time.timeZone = "Asia/Tokyo";
  i18n.defaultLocale = "ja_JP.UTF-8";
  i18n.extraLocaleSettings = {
    LC_ADDRESS = "ja_JP.UTF-8";
    LC_IDENTIFICATION = "ja_JP.UTF-8";
    LC_MEASUREMENT = "ja_JP.UTF-8";
    LC_MONETARY = "ja_JP.UTF-8";
    LC_NAME = "ja_JP.UTF-8";
    LC_NUMERIC = "ja_JP.UTF-8";
    LC_PAPER = "ja_JP.UTF-8";
    LC_TELEPHONE = "ja_JP.UTF-8";
    LC_TIME = "ja_JP.UTF-8";
  };

  environment.variables = {
    NIXOS_OZONE_WL = "1";
  };

  console.keyMap = "jp106";
  stdenv.hostPlatform.system.stateVersion = "25.05";
}