A few changes

clients/quadraticserver/call.nix

@@ -0,0 +1,47 @@
+{
+  pkgs,
+  config,
+  ...
+}: {
+  services = let
+    domain = "call.federated.nexus";
+  in {
+    livekit = {
+      enable = true;
+      keyFile = config.age.secrets."livekitKeys.age".path;
+    };
+
+    lk-jwt-service = {
+      enable = true;
+      livekitUrl = "wss://${domain}/livekit/sfu";
+      keyFile = config.services.livekit.keyFile;
+    };
+
+    caddy.virtualHosts."${domain}".extraConfig = ''
+      root * ${pkgs.element-call}
+      route {
+      	respond /config.json `${builtins.toJSON {
+        default_server_config = {
+          "m.homeserver" = {
+            "base_url" = config.services.grapevine.settings.server_discovery.client.base_url;
+            "server_name" = config.services.grapevine.settings.server_name;
+          };
+        };
+        livekit.livekit_service_url = "https://${domain}/livekit";
+      }}` 200
+
+      	handle /livekit/sfu/get {
+      	  uri strip_prefix /livekit
+      	  reverse_proxy 127.0.0.1:8080
+      	}
+
+      	handle_path /livekit/sfu* {
+      	  reverse_proxy 127.0.0.1:7880
+      	}
+
+      	try_files {path} {path}/ /index.html
+      	file_server
+      }
+    '';
+  };
+}