Use cinny fork with calls

clients/quadraticserver/matrix/cinny.nix

@@ -1,6 +1,26 @@
 {pkgs, ...}: {
   services.caddy.virtualHosts."app.federated.nexus".extraConfig = ''
-    root ${pkgs.cinny}
+    root ${pkgs.cinny.override {
+      conf = {
+        defaultHomeserver = 0;
+        homeserverList = ["federated.nexus"];
+        allowCustomHomeservers = false;
+        elementCallUrl = "https://call.federated.nexus";
+      };
+      cinny-unwrapped = pkgs.cinny-unwrapped.overrideAttrs (old: rec {
+        src = pkgs.fetchFromGitHub {
+          owner = "GigiaJ";
+          repo = "cinny";
+          rev = "a299e9c4cb4df1a3b732fdfddb1297170251a10d";
+          hash = "sha256-EDsDVOlaYT0S30Cml+t71U7OOKkfcE4aJxwE8iTdV3s=";
+        };
+        npmDeps = pkgs.fetchNpmDeps {
+          inherit src;
+          name = "${old.pname}-${old.version}-npm-deps";
+          hash = "sha256-k8eCQO1uIpoKpLHO3E3EYWbQSjcAya2AxngA9mvSfns=";
+        };
+      });
+    }}
     file_server
   '';
 }