nix/module: init

flake.nix

@@ -48,6 +48,8 @@
       };
     };
 
+    nixosModules.default = ./nix/module.nix;
+
     packages = forAllSystems (system: pkgs: _:
       let
       cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);

nix/module.nix

@@ -0,0 +1,48 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.roowho2;
+  format = pkgs.formats.toml { };
+in {
+  options.services.roowho2 = {
+    enable = lib.mkEnableOption "the roowho2 daemon, replacement for multiple linux netkit services";
+    package = lib.mkPackageOption pkgs "roowho2" { };
+
+    settings = lib.mkOption {
+      type = lib.types.submodule {
+        freeformType = format.type;
+        options = {
+          rwhod = {
+            enable = lib.mkEnableOption "the rwhod service";
+
+            # TODO: allow configuring socket config
+          };
+        };
+      };
+      default = { };
+      description = "Configuration settings for Roowho2.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    systemd.sockets.roowhoo2-rwhod = lib.mkIf cfg.settings.rwhod.enable {
+      description = "Roowho2 Rwhod Socket";
+      listenDatagrams = [ 513 ];
+      socketConfig = {
+        Service = "roowho2.service";
+        FileDescriptorName = "rwhod_socket";
+        Broadcast = true;
+      };
+    };
+
+    systemd.services.roowho2 = {
+      serviceConfig = {
+        ExecStart = "${lib.getExe' cfg.package "roowho2d"} --config ${format.toFile cfg.settings}";
+        Restart = "on-failure";
+        DynamicUser = true;
+
+        # TODO: hardening
+      };
+    };
+  };
+}