fixes and docs

systems/aarch64-linux/pi5/default.nix

@@ -3,6 +3,7 @@
 # https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
 
 {
+  lib,
   namespace,
   ...
 }:
@@ -103,9 +104,13 @@
     # ###################################################
 
     services = {
-      nebula-lighthouse = {
+      nebula = {
         enable = true;
+        isLighthouse = true;
         port = 4242;
+        secretsPrefix = "pi5/nebula";
+        secretsFile = lib.snowfall.fs.get-file "secrets/pi5-secrets.yaml";
+        hostSecretName = "lighthouse";
       };
     };