{
  pkgs,
  lib,
  hypr-contrib,
  nix-gaming,
  ...
}: let
  VARIABLES = import ./variables.nix;
in {
  imports = [
    ./modules
    ./containers/rar.nix
    ./containers/wine.nix
  ];

  # locale
  i18n.defaultLocale = "ja_JP.UTF-8";
  i18n.supportedLocales = ["ja_JP.UTF-8/UTF-8" "en_US.UTF-8/UTF-8" "fr_FR.UTF-8/UTF-8"];

  # nix
  nix.package = pkgs.nixFlakes;
  nix.settings.experimental-features = ["nix-command" "flakes" "repl-flake"];

  hardware.opengl.driSupport32Bit = true;

  boot.loader = {
    systemd-boot = {
      enable = true;
      editor = false;
      configurationLimit = 10;
    };

    timeout = 0;
    efi.canTouchEfiVariables = true;
  };

  boot.tmp.useTmpfs = true;

  programs.gamemode.enable = true;

  environment.systemPackages = with pkgs; [
    hypr-contrib.packages."${VARIABLES.system}".grimblast
    nix-gaming.packages."${VARIABLES.system}".osu-stable
    (pkgs.callPackage ./packages/waycorner {})
    (pkgs.callPackage ./packages/srb2 {})
    slade
    typespeed
    osu-lazer-bin
    mullvad-vpn

    # dev
    marksman
    lua-language-server
    clang-tools
    texlab

    # go
    go
    gopls

    # nix
    nil
    alejandra
    nixos-generators

    # node/yarn/deno
    nodejs
    yarn
    deno

    # rust
    gcc
    rustc
    rustfmt
    cargo
    rust-analyzer
    bacon
  ];

  nixpkgs.config.allowUnfreePredicate = pkg:
    builtins.elem (lib.getName pkg) [
      "osu-lazer-bin"
      "vmware-workstation"
    ];

  environment.sessionVariables = {
    EDITOR = "nvim";
    VISUAL = "nvim";
    GIT_DISCOVERY_ACROSS_FILESYSTEM = "1";
    FZF_DEFAULT_OPTS = "--height 40% --reverse --border --color=16";
    NODE_OPTIONS = "--max_old_space_size=16384";
  };

  environment.defaultPackages = [];
  system.stateVersion = "22.11";

  # home-manager
  home-manager = {
    useGlobalPkgs = true;
    useUserPackages = true;

    sharedModules = [
      {
        home.stateVersion = "22.11";

        editorconfig = {
          enable = true;

          settings = {
            "*" = {
              charset = "utf-8";
              end_of_line = "lf";
              insert_final_newline = true;
              indent_size = 2;
              indent_style = "space";
              trim_trailing_whitespace = true;
            };

            "*.md".indent_style = "tab";

            "Makefile" = {
              indent_style = "tab";
              indent_size = 4;
            };

            "*.html" = {
              indent_style = "tab";
              indent_size = 4;
            };

            "*.go" = {
              indent_style = "tab";
              indent_size = 4;
            };
          };
        };
      }
    ];
  };

  # systemd
  systemd.extraConfig = ''
    DefaultTimeoutStopSec=10s
  '';

  # logind
  services.logind.lidSwitch = "ignore";

  # timezone
  time.timeZone = "${VARIABLES.timezone}";

  # user
  users = {
    mutableUsers = false;

    users.user = {
      isNormalUser = true;
      uid = 1000;
      password = "user";
      extraGroups = ["wheel" "networkmanager"];
    };
  };

  home-manager.users.user = {
    home.username = "user";
    home.homeDirectory = "/home/user";
  };

  # dev
  programs.npm.enable = true;

  # networking
  networking = {
    hostName = VARIABLES.hostname;

    networkmanager = {
      enable = true;
      dns = "none";
      wifi.macAddress = "random";
      ethernet.macAddress = "random";

      unmanaged = ["interface-name:ve-*"];
    };

    useHostResolvConf = true;
  };

  services.resolved.llmnr = "false";

  systemd.services.NetworkManager-wait-online.enable = false;

  # virtualization
  virtualisation.vmVariant = {
    virtualisation = {
      memorySize = 8192;
      cores = 4;
      restrictNetwork = true;
    };

    virtualisation.qemu.options = ["-device virtio-vga-gl" "-display sdl,gl=on,show-cursor=off" "-full-screen"];

    environment.sessionVariables = {
      WLR_NO_HARDWARE_CURSORS = "1";
    };
  };

  # mullvad-vpn
  services.mullvad-vpn = {
    enable = true;
    enableExcludeWrapper = false;
  };

  networking.firewall.allowedTCPPorts = [11918];

  networking = {
    nat = {
      enable = true;
      internalInterfaces = ["ve-+"];
      externalInterface = "wg-mullvad";

      forwardPorts = [
        {
          destination = "192.168.100.11:80";
          sourcePort = 11918;
        }
      ];
    };
  };
}