nixos/godns: init module

Initial implementation of the GoDNS service module. This module allows users to enable and configure the GoDNS service on their NixOS system. It includes options for specifying the GoDNS package and the path to the configuration file.

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -181,6 +181,8 @@
 
 - [Fedimint](https://github.com/fedimint/fedimint), a module based system for building federated applications (Federated E-Cash Mint). Available as [services.fedimintd](#opt-services.fedimintd).
 
+- [GoDNS](https://github.com/TimothyYe/godns), a dynamic DNS client written in Go, which supports multiple DNS providers. Available as [services.godns](#opt-services.godns.enable).
+
 ## Backward Incompatibilities {#sec-release-24.11-incompatibilities}
 
 - The `sound` options have been removed or renamed, as they had a lot of unintended side effects. See [below](#sec-release-24.11-migration-sound) for details.

nixos/modules/module-list.nix

@@ -1053,6 +1053,7 @@
   ./services/networking/go-neb.nix
   ./services/networking/go-shadowsocks2.nix
   ./services/networking/gobgpd.nix
+  ./services/networking/godns.nix
   ./services/networking/gvpe.nix
   ./services/networking/hans.nix
   ./services/networking/harmonia.nix

nixos/modules/services/networking/godns.nix

@@ -0,0 +1,47 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.services.godns;
+
+  inherit (lib)
+    mkEnableOption
+    mkIf
+    mkOption
+    mkPackageOption
+    types
+    ;
+in
+{
+
+  options.services.godns = {
+    enable = mkEnableOption "GoDNS Service";
+
+    package = mkPackageOption pkgs "godns" { };
+
+    configPath = mkOption {
+      type = types.path;
+      description = "Path to the configuration file for godns.";
+      example = "/etc/godns/config.json";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.godns = {
+      description = "GoDNS Service";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+      serviceConfig = {
+        ExecStart = "${lib.getExe cfg.package} -c ${cfg.configPath}";
+        Restart = "always";
+        KillMode = "process";
+        RestartSec = "2s";
+      };
+    };
+  };
+
+  meta.maintainers = [ lib.maintainers.michaelvanstraten ];
+}