Working system flake builds, attempt to integrate into nixops

lib/fudo/backplane/jabber.nix

@@ -1,30 +1,31 @@
 { config, lib, pkgs, ... }:
 
 with lib;
-let
-  cfg = config.fudo.backplane;
-
-  backplane-server = cfg.backplane-host;
-
-  generate-auth-file = name: files: let
-    make-entry = name: passwd-file:
-      ''("${name}" . "${readFile passwd-file}")'';
-    entries = mapAttrsToList make-entry files;
-    content = concatStringsSep "\n" entries;
-  in pkgs.writeText "${name}-backplane-auth.scm" "'(${content})";
-
-  host-auth-file = generate-auth-file "host"
-    (mapAttrs (hostname: hostOpts: hostOpts.password-file)
-      cfg.client-hosts);
-
-  service-auth-file = generate-auth-file "service"
-    (mapAttrs (service: serviceOpts: serviceOpts.password-file)
-      cfg.services);
-
-in {
+{
   config = mkIf config.fudo.jabber.enable {
+    fudo = let
+      cfg = config.fudo.backplane;
 
-    fudo = {
+      hostname = config.instance.hostname;
+
+      backplane-server = cfg.backplane-host;
+
+      generate-auth-file = name: files: let
+        make-entry = name: passwd-file:
+          ''("${name}" . "${readFile passwd-file}")'';
+        entries = mapAttrsToList make-entry files;
+        content = concatStringsSep "\n" entries;
+      in pkgs.writeText "${name}-backplane-auth.scm" "'(${content})";
+
+      host-auth-file = generate-auth-file "host"
+        (mapAttrs (hostname: hostOpts: hostOpts.password-file)
+          cfg.client-hosts);
+
+      service-auth-file = generate-auth-file "service"
+        (mapAttrs (service: serviceOpts: serviceOpts.password-file)
+          cfg.services);
+
+    in {
       secrets.host-secrets.${hostname} = {
         backplane-host-auth = {
           source-file = host-auth-file;