diff --git a/deployment/default.nix b/deployment/default.nix
index ad98f15a..3f8e550a 100644
--- a/deployment/default.nix
+++ b/deployment/default.nix
@@ -33,11 +33,25 @@
 ## information coming from the FediPanel.
 ##
 ## FIXME: lock step the interface with the definitions in the FediPanel
-panelConfig:
+panelConfigNullable:
 
 let
   inherit (lib) mkIf;
 
+  nonNull = x: v: if x == null then v else x;
+
+  panelConfig = {
+    domain = nonNull panelConfigNullable.domain "fediversity.net";
+    initialUser = nonNull panelConfigNullable.initialUser {
+      displayName = "Testy McTestface";
+      username = "test";
+      password = "testtest";
+      email = "test@test.com";
+    };
+    mastodon = nonNull panelConfigNullable.mastodon { enable = false; };
+    peertube = nonNull panelConfigNullable.peertube { enable = false; };
+    pixelfed = nonNull panelConfigNullable.pixelfed { enable = false; };
+  };
 in
 
 ## Regular arguments of a NixOps4 deployment module.
@@ -122,7 +136,7 @@ in
           { pkgs, ... }:
           mkIf (cfg.mastodon.enable || cfg.peertube.enable || cfg.pixelfed.enable) {
             fediversity = {
-              inherit (panelConfig) domain;
+              inherit (cfg) domain;
               garage.enable = true;
               pixelfed = pixelfedS3KeyConfig { inherit pkgs; };
               mastodon = mastodonS3KeyConfig { inherit pkgs; };