Add home-assistant module

modules/nixos/services/home-assistant/mqtt.nix

@@ -0,0 +1,93 @@
+{
+  config,
+  lib,
+  pkgs,
+  self,
+  ...
+}:
+
+let
+  cfg = config.modules.services.home-assistant;
+in
+{
+  config = lib.mkIf cfg.enable {
+    services.mosquitto = {
+      enable = true;
+      listeners = [
+        {
+          acl = [ "pattern readwrite #" ];
+          omitPasswordAuth = true;
+          port = 1883;
+          settings = {
+            allow_anonymous = true;
+          };
+        }
+      ];
+    };
+
+    age.secrets."files/services/zigbee2mqtt/secret.yaml" = {
+      file = "${self.inputs.secrets}/files/services/zigbee2mqtt/secret.yaml.age";
+      path = "${config.services.zigbee2mqtt.dataDir}/secret.yaml";
+      owner = "zigbee2mqtt";
+      group = "zigbee2mqtt";
+    };
+
+    services.zigbee2mqtt = {
+      package = pkgs.unstable.zigbee2mqtt;
+      enable = true;
+      dataDir = "/var/lib/zigbee2mqtt";
+      settings = {
+        homeassistant = lib.optionalAttrs config.services.home-assistant.enable {
+          discovery_topic = "homeassistant";
+          status_topic = "hass/status";
+          legacy_entity_attributes = true;
+          legacy_triggers = true;
+        };
+        availability = true;
+        frontend = true;
+        device_options = {
+          retain = true;
+        };
+        serial = {
+          port = "/dev/serial/by-id/usb-Silicon_Labs_Sonoff_Zigbee_3.0_USB_Dongle_Plus_0001-if00-port0";
+        };
+        advanced = {
+          channel = 20;
+          network_key = "!secret.yaml network_key";
+          pan_id = 13001;
+          ext_pan_id = [
+            79
+            1
+            73
+            47
+            250
+            136
+            124
+            222
+          ];
+          transmit_power = 20;
+        };
+        mqtt = {
+          version = 5;
+          server = "mqtt://localhost:1883";
+        };
+      };
+    };
+
+    modules.services.borgmatic.directories = [
+      config.services.mosquitto.dataDir
+      config.services.zigbee2mqtt.dataDir
+    ];
+
+    services.home-assistant = {
+      config.mqtt = { };
+      extraComponents = [
+        "mqtt"
+        "mqtt_eventstream"
+        "mqtt_json"
+        "mqtt_room"
+        "mqtt_statestream"
+      ];
+    };
+  };
+}