Tons of changes, I guess?

lib/instance.nix

@@ -52,6 +52,11 @@ in {
       description = "List of users who should have access to the local host";
     };
 
+    local-networks = mkOption {
+      type = listOf str;
+      description = "Networks which are considered local to this host, site, or domain.";
+    };
+
     build-seed = mkOption {
       type = str;
       description = "Seed used to generate configuration.";
@@ -87,25 +92,23 @@ in {
       filterAttrs (host: hostOpts: hostOpts.site == local-site) config.fudo.hosts;
 
     local-networks =
-      host.local-networks //
-      config.fudo.domains.${local-domain}.local-networks //
+      host.local-networks ++
+      config.fudo.domains.${local-domain}.local-networks ++
       config.fudo.sites.${local-site}.local-networks;
 
     local-profile = host.profile;
 
-    build-seed = builtins.readFile config.fudo.secrets.files.build-seed;
-
   in {
     instance = {
       inherit
-        build-seed
         local-domain
         local-site
         local-users
         local-admins
         local-groups
         local-hosts
-        local-profile;
+        local-profile
+        local-networks;
     };
   };
 }