{ inputs, config, lib, pkgs, modulesPath, desktop, hostname, username, system, ... }: {
  imports = [ 
    ./disks.nix
    ../../common/modules/secureboot.nix
    ../../common/modules/ssh-luks.nix
    ../../common/services/openrazer.nix
    ../../common/services/podman.nix
    ../../common/services/tailscale-autoconnect.nix
  ];
  # steam, nvidia-x11, etc
  nixpkgs.config.allowUnfree = true;

  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "thunderbolt" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
  boot.initrd.kernelModules = [ ];
  boot.kernelModules = [ "kvm-intel" "acpi_call" ];
  boot.extraModulePackages = with config.boot.kernelPackages; [ acpi_call ];

  networking.useDHCP = lib.mkDefault true;
  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  hardware.keyboard.zsa.enable = true;

  # Set your time zone.
  time.timeZone = "Asia/Tokyo";

  # Set the networking hostname:
  networking.hostName = "nixos-desktop";

  programs.gamemode = {
    enable = true;
    enableRenice = true;
    settings = {
      general = {
        renice = 10;
      };
      # Warning: GPU optimisations have the potential to damage hardware
      gpu = {
        # apply_gpu_optimisations = "accept-responsibility";
        gpu_device = 0;
        amd_performance_level = "high";
      };
      custom = {
        start = "${pkgs.libnotify}/bin/notify-send 'GameMode started'";
        end = "${pkgs.libnotify}/bin/notify-send 'GameMode ended'";
      };
    };
  };

  hardware = {
    opengl = {
      enable = true;
      driSupport32Bit = true;
      driSupport = true;
    };

    nvidia = {
      open = false;
      nvidiaSettings = true;
      modesetting.enable = true;
      package = config.boot.kernelPackages.nvidiaPackages.production;  # (installs 535)
      };
    };

  environment.systemPackages = [ 
    # deployments and development environments
    inputs.deploy-rs.packages.${system}.deploy-rs
    pkgs.distrobox

    # nVidia gpu options
    pkgs.gwe
    pkgs.nvtop-nvidia
    # WINE
    # support 32-bit only
    pkgs.wine
    # support 64-bit only
    (pkgs.wine.override { wineBuild = "wine64"; })
    pkgs.wineWowPackages.staging
    pkgs.winetricks
    pkgs.wineWowPackages.waylandFull

    # RGB stuff
    pkgs.openrgb-with-all-plugins

    # Other
    pkgs.android-udev-rules
  ];

}