[module/7-days-to-die] Experiment with game server

flake.nix

@@ -352,7 +352,7 @@
             writeScriptBin "option" ''
               host=$1
               option=$2
-              nix eval .#nixosConfigurations.$host.config.$option 2>/dev/null
+              nix eval .#nixosConfigurations.$host.config.$option
             '')
           (with pkgs;
             writeScriptBin "hm-option" ''

modules/7-days-to-die.nix

@@ -0,0 +1,67 @@
+{ pkgs, lib, config, ... }:
+
+let
+  ports = {
+    tcp = [ 26900 ];
+    udp = [ 26900 26901 26902 ];
+  };
+  uid = 459;
+  gid = 459;
+  cfg = config.services."7-days-to-die";
+
+  portsTcp =
+    map (port: let portStr = builtins.toString port; in "${portStr}:${portStr}/tcp");
+  portsUdp =
+    map (port: let portStr = builtins.toString port; in "${portStr}:${portStr}/udp");
+
+in {
+  options.services."7-days-to-die" = with lib; {
+    enable = mkEnableOption "7 Days to die game server service";
+    rootDir = mkOption {
+      type = types.str;
+      description = "Path to use for storage";
+    };
+    openFirewall = mkOption {
+      type = types.bool;
+      default = false;
+      description =
+        "Whether to open the firewall for ports ${builtins.toString ports}";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Create the necessary user and group
+    users = {
+      groups.sdtd.gid = gid;
+      users.sdtd = {
+        inherit uid;
+        group = config.users.groups.sdtd.name;
+        isSystemUser = true;
+      };
+    };
+
+    # Open the port in the firewall if requested
+    networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewall ports.tcp;
+    networking.firewall.allowedUDPPorts = lib.mkIf cfg.openFirewall ports.udp;
+
+    virtualisation.oci-containers.containers."7-days-to-die" = {
+      image = "vinanrra/7dtd-server:latest";
+      ports = (portsTcp ports.tcp) ++ (portsUdp ports.udp);
+      environment = {
+        START_MODE = "1";
+        PUID = builtins.toString uid;
+        PGID = builtins.toString gid;
+        TimeZone = config.time.timeZone;
+        BACKUP = "NO";
+      };
+      volumes = [
+        "${cfg.rootDir}/saves:/home/sdtdserver/.local/share/7DaysToDie/"
+        "${cfg.rootDir}/config:/home/sdtdserver/serverfiles/"
+        "${cfg.rootDir}/logs:/home/sdtdserver/log/"
+        "${cfg.rootDir}/backups:/home/sdtdserver/lgsm/backup/"
+        "${cfg.rootDir}/lgsm-config:/home/sdtdserver/lgsm/lgsm-config/sdtdserver/"
+      ];
+    };
+  };
+}
+

modules/base-system.nix

@@ -4,7 +4,7 @@
 { pkgs, config, ... }:
 
 {
-  imports = [ ./photoprism.nix ];
+  imports = [ ./photoprism.nix ./7-days-to-die.nix ];
 
   config = {
     # Allow joypixels' license and unfree licenses in general