{ config, lib, pkgs, ... }:
{
  networking.networkmanager.enable = lib.mkDefault true;
  time.timeZone = "Asia/Tokyo";

  i18n = {
    defaultLocale = "en_US.UTF-8";
    defaultCharset = "UTF-8";
    extraLocales = [
      "ja_JP.UTF-8/UTF-8"
      "ja_JP.EUC-JP/EUC-JP"
    ];
  };

  services.pipewire = {
    enable = true;
    pulse.enable = true;
  };

  services.openssh = {
    enable = true;
  };

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

  hardware.gpgSmartcards.enable = true;

  users.users.bitbang = {
    isNormalUser = true;
    extraGroups = [ "wheel" "video" "audio" "nix" "dialout" "networkmanager" ];
  };

  programs.zoxide = {
    enable = true;
    enableBashIntegration = false;
    enableZshIntegration = true;
  };

  programs.tmux = {
    enable = true;
    clock24 = true;
    baseIndex = 1;
    keyMode = "vi";
    customPaneNavigationAndResize = true;
    newSession = true;
    historyLimit = 10000;
    terminal = "tmux-direct";
  };

  programs.bat = {
    enable = true;
  };

  programs.nix-ld = {
    enable = true;
    libraries = with pkgs; [
      zlib
      zstd
      stdenv.cc.cc
      curl
      openssl
      attr
      libssh
      bzip2
      libxml2
      acl
      libsodium
      util-linux
      xz
      systemd
      ffmpeg
    ];
  };

  nix.gc = {
    automatic = true;
    dates = "monthly";
    persistent = true;
  };

  nix.settings = {
    cores = 4;
    sandbox = true;
    allowed-users = [ "@wheel" ];
    trusted-users = [ "@wheel" ];
    log-lines = 50;
    auto-optimise-store = true;
    experimental-features = [ "nix-command" "flakes" ];
    substituters = [
      "https://cache.nixos.org"
    ];
    accept-flake-config = true;
  };

  environment.systemPackages = with pkgs; [
    micro
    wget
    git
    btop
    fastfetch
    stow
  ];
}