add home assistant

modules/services/home-assistant.nix

@@ -0,0 +1,20 @@
+{ config, lib, ... }:
+let
+  cfg = config.services.home-assistant;
+  fqdn = "${cfg.subdomain}.${config.networking.domain}";
+in
+{
+  options.services.home-assistant = {
+    subdomain = lib.mkOption {
+      type = lib.types.str;
+      description = "The subdomain to use for Home Assistant";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.webserver = {
+      enable = lib.mkDefault true;
+      vHosts.${fqdn}.locations."/".proxyPort = cfg.config.http.server_port;
+    };
+  };
+}