{ pkgs, ... }:

{
  programs.gamemode.enable = true;
  users.users.djai.extraGroups = [ "gamemode" ];

  # capSysNice would make glibc strip LD_PRELOAD from gamescope, breaking steam's overlay.
  # '--rt' works through the rtprio limit below instead (see the gamescope patch on tuxcomp).
  programs.gamescope = {
    enable = true;
    capSysNice = false;
  };

  security.pam.loginLimits = [
    {
      domain = "@users";
      type = "-";
      item = "rtprio";
      value = "99";
    }
    {
      domain = "@users";
      type = "-";
      item = "nice";
      value = "-19";
    }
  ];

  # Wine 10+ uses the kernel's ntsync when /dev/ntsync exists; far cheaper
  # than esync/fsync under thread contention.
  boot.kernelModules = [ "ntsync" ];

  users.users.djai.packages = with pkgs; [
    desmume
    eden
    libretro.citra
    steam
    steamguard-cli
    winetricks
    wineWow64Packages.stable
  ];

  services.flatpak.packages = [
    "org.vinegarhq.Sober"
  ];

  home-manager.users.djai.programs.prismlauncher = {
    enable = true;
    settings = {
      ApplicationTheme = "system";
      Env = ''{\"__GLX_VENDOR_LIBRARY_NAME\":\"nvidia\",\"__NV_PRIME_RENDER_OFFLOAD\":\"1\",\"__VK_LAYER_NV_optimus\":\"NVIDIA_only\"}'';
      IconTheme = "pe_colored";
      JavaPath = "java"; # TODO: check correct
      Language = "en_GB";
      MaxMemAlloc = 8192;
      MinMemAlloc = 512;
      ShowConsole = false;
      ShowConsoleOnError = true;
      ShowGameTime = true;
      ShowGameTimeWithoutDays = true;
      UseDiscreteGpu = true;
      UserAskedAboutAutomaticJavaDownload = true;
    };
  };
}