diff --git a/systems/zaatar/home-assistant.nix b/systems/zaatar/home-assistant.nix
index efe9202..1d94721 100644
--- a/systems/zaatar/home-assistant.nix
+++ b/systems/zaatar/home-assistant.nix
@@ -1,11 +1,131 @@
-let
+{config, ...}: let
   port = 8123;
 in {
   networking.firewall.allowedTCPPorts = [port];
 
   services.nginx.virtualHosts."home.kmein.r" = {
     locations."/" = {
-      proxyPass = "http://127.0.0.1:${toString port}";
+      proxyPass = "http://127.0.0.1:${toString config.services.home-assistant.http.server_port}";
+    };
+  };
+
+  services.home-assistant = {
+    enable = true;
+    config = {
+      frontend = {};
+      sun = {};
+      # TODO calendar = { platform = "caldav"; url = "TODO"; username = "TODO"; password = "TODO"; }
+      config = {};
+      mobile_app = {};
+      network = {};
+      homeassistant = {
+        name = "Home";
+        latitude = "";
+      };
+      auth.users = [
+        {
+          id = "aa6284a151da4a9c91b4a18d86a5788b";
+          group_ids = ["system-admin"];
+          is_owner = true;
+          is_active = true;
+          name = "kmein";
+        }
+      ];
+      "core.area_registry".areas = [
+        {
+          id = "living_room";
+          name = "Saal";
+        }
+        {
+          id = "kitchen";
+          name = "Küche";
+        }
+        {
+          id = "bedroom";
+          name = "Zimmer";
+        }
+        {
+          id = "corridor";
+          name = "Korridor";
+        }
+      ];
+      default_config = {};
+      http.server_port = 8124;
+      automation = [
+        {
+          id = "1647008057816";
+          alias = "Abend";
+          description = "";
+          trigger = [
+            {
+              platform = "sun";
+              event = "sunset";
+              offset = 15;
+            }
+          ];
+          condition = [];
+          mode = "single";
+          action = [
+            {
+              service = "scene.turn_on";
+              target.entity_id = "scene.abend";
+              metadata = {};
+            }
+          ];
+        }
+        {
+          id = "1647205852858";
+          alias = "Come home";
+          description = "";
+          trigger = [
+            {
+              platform = "device";
+              device_id = "7279f87d95574352ff7e9cc69c325a63";
+              domain = "device_tracker";
+              entity_id = "device_tracker.moto_g_7_power";
+              type = "enters";
+              zone = "zone.home";
+            }
+          ];
+          condition = [
+            {
+              condition = "sun";
+              after = "sunset";
+              after_offset = 15;
+            }
+          ];
+          mode = "single";
+          action = [
+            {
+              type = "turn_on";
+              device_id = "4cf6a7217da6633d4a9c74fdf82ff30f";
+              entity_id = "light.corridor_ceiling";
+              domain = "light";
+            }
+          ];
+        }
+      ];
+      tradfri = {};
+      openweathermap = {};
+      weather = {};
+      scene = [
+        {
+          id = "1647007926507";
+          name = "Abend";
+          entities = {
+            "switch.kette".state = "on";
+            "switch.tradfri_outlet_2".state = "on"; # Kette 2
+            "light.arod" = {
+              min_mireds = 250;
+              max_mireds = 454;
+              color_mode = "hs";
+              brightness = 76;
+              hs_color = [29.021 74.588];
+              state = "on";
+            };
+          };
+        }
+      ];
     };
   };