Add mosquitto and zigbee2mqtt

services/home-assistant/default.nix

@@ -1,5 +1,6 @@
 { pkgs, ... }:
 {
+  # Enable the Home Assistant service
   services.home-assistant = {
     enable = true;
     configWritable = true;
@@ -10,4 +11,22 @@
     customComponents = with pkgs.home-assistant-custom-components; [
     ];
   };
+
+  # Enable the mosquitto MQTT broker
+  services.mosquitto = {
+    enable = true;
+    config = {
+      allow_anonymous = true;
+      persistence = true;
+    };
+  };
+
+  # Enable the zigbee2mqtt service
+  services.zigbee2mqtt = {
+    enable = true;
+    settings = {
+      permit_join = true;
+      serial.port = "/dev/ttyUSB0";
+    };
+  };
 }