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{
  me,
  lib,
  pkgs,
  auxiliaryPkgs,
  ...
}:

let
  inherit (lib)
    substring
    toUpper
    getExe
    ;

  # todo: move this to a utils package
  capitalize = str: toUpper (substring 0 1 str) + substring 1 (-1) str;

  user = "mel";
in
{
  services.sunshine = {
    enable = true;
    autoStart = true;
    capSysAdmin = true;
    openFirewall = true;

    settings = {
      sunshine_name = capitalize me.name;

      # note: these are the settings for wolfram and it's intel arc b570 gpu
      # in particular, should be adjusted for different setups when used!
      adapter_name = "/dev/dri/renderD128"; # primary card should be located here
      encoder = "vaapi"; # or "qsv" is quicksync is better supported
      av1_mode = 2;

      # no need for encryption since we are going through a secure network anyway
      lan_encryption_mode = 0;
      wan_encryption_mode = 0;
      origin_web_ui_allowed = "wan"; # allow access everywhere
    };

    applications = {
      env = {
        # give sunshine access to binaries (we can install stuff into .local/bin if we want)
        PATH = "$(PATH):/run/current-system/sw/bin:/etc/profiles/per-user/${user}/bin:$(HOME)/.local/bin";
      };

      apps =
        let
          command =
            name: cmd:
            getExe (
              pkgs.writeShellApplication {
                inherit name;
                runtimeInputs = with pkgs; [
                  steam
                  util-linux
                ];
                text = "sudo -u ${user} ${cmd}";
              }
            );
        in
        [
          # moondeck will call this app when connecting via moonlight, automatically
          {
            name = "MoonDeckStream";
            cmd = "${auxiliaryPkgs.moondeck-buddy}/bin/MoonDeckStream";
            image-path = "${auxiliaryPkgs.moondeck-buddy}/share/icons/hicolor/256x256/apps/moondeckbuddy.png";
            exclude-global-prep-cmd = "false";
            elevated = "false";
          }

          # other applications, called manually
          {
            name = "Desktop";
            image-path = "desktop.png";
            # empty commands will always simply open desktop
          }
          {
            name = "Steam";
            image-path = "steam.png";
            detached = [ (command "sunshine-open-steam-bp" "steam steam://open/bigpicture") ];
            prep-cmd = [
              {
                do = "";
                undo = command "sunshine-close-steam-bp" "steam steam://close/bigpicture"; # close up steam
              }
            ];
            # sunshine can't track the steam startup properly, so don't.
            auto-detach = "true";
            wait-all = "true";
            exit-timeout = "5";
          }
        ];
    };
  };

  # run the buddy app for the moondeck for a nicer integration of sunshine/moonlight
  # when using a steam deck!
  systemd.user.services.moondeck-buddy = {
    description = "MoonDeck Buddy";

    wantedBy = [ "graphical-session.target" ];
    partOf = [ "graphical-session.target" ];
    after = [
      "graphical-session.target"
      "network-online.target"
    ];

    serviceConfig = {
      ExecStart = "${getExe auxiliaryPkgs.moondeck-buddy}";

      # try to stay alive even if something moondeck-buddy depends on,
      # like steam, crashes.
      Restart = "on-failure";
      RestartSec = "5s";

      Environment = "QT_QPA_PLATFORM=wayland";
    };
  };

  networking.firewall.allowedTCPPorts = [ 59999 ]; # port for moondeck-buddy
}