backing up the working dir

hosts/lithium/services/palworld/default.nix

@@ -0,0 +1,51 @@
+{ config, pkgs, lib, ... }:
+let
+  palworldSettings = builtins.readFile ./PalWorldSettings.ini;
+in
+{
+  # NOTE: Partly inspired by: https://github.com/pocketpairjp/palworld-dedicated-server-docker
+  networking.firewall.allowedUDPPorts = [ 8211 ];
+
+  users.users.palworld = {
+    isSystemUser = true;
+    createHome = true;
+    home = "/home/palworld";
+    homeMode = "750";
+    group = "palworld";
+    extraGroups = [ "steamcmd" ];
+  };
+  users.groups.palworld = {};
+
+  systemd.services.palworld = {
+    enable = true;
+    description = "PalWorld Dedicated Server";
+    #after = [ "network.target" ];
+    wantedBy = [ "multi-user.target" ];
+
+    serviceConfig = {
+      ExecStartPre = ''
+        ${pkgs.steamcmd}/bin/steamcmd +login anonymous \
+        +app_update 2394010 validate +quit
+      '';
+      ExecStart = ''
+        ${pkgs.steam-run}/bin/steam-run \
+        .steam/steam/Steamapps/common/PalServer/PalServer.sh -publiclobby \
+        -useperfthreads -NoAsyncLoadingThread -UseMultithreadForDS
+      '';
+      WorkingDirectory = "/home/palworld";
+      Restart = "always";
+      RuntimeMaxSec = "1d";
+      User = "palworld";
+    };
+  };
+
+  # NOTE: Config is stashed at the following directory.
+  # /home/palworld/.steam/steam/Steamapps/common/PalServer/Pal/Saved/Config/LinuxServer/PalWorldSettings.ini
+  environment.etc."palworld/PalWorldSettings.ini" = {
+    target = "/home/palworld/.steam/steam/Steamapps/common/PalServer/Pal/Saved/Config/LinuxServer/PalWorldSettings.ini";
+    text = palworldSettings;
+    mode = "0644";
+    user = "palworld";
+    group = "palworld";
+  };
+}