couple fixes

modules/nixos/services/nextcloud/default.nix

@@ -104,6 +104,18 @@ let
       users.users.nextcloud.isNormalUser = lib.mkForce false;
       users.groups.nextcloud = { };
 
+      # Ensure nextcloud services start after PostgreSQL is ready.
+      # The upstream NixOS module only adds this ordering when services.postgresql.enable
+      # is true in the same config, but here PostgreSQL is managed separately.
+      systemd.services.nextcloud-setup = {
+        after = [ "postgresql.service" ];
+        requires = [ "postgresql.service" ];
+      };
+      systemd.services.nextcloud-update-db = {
+        after = [ "postgresql.service" ];
+        requires = [ "postgresql.service" ];
+      };
+
       # Configure web server
       services.nginx = {
         enable = true;