nixos/maubot: fix eval with default config

nixos/modules/services/matrix/maubot.nix

@@ -42,7 +42,7 @@ let
       database = lib.last (lib.splitString "/" noSchema);
     };
 
-  postgresDBs = [
+  postgresDBs = builtins.filter isPostgresql [
     cfg.settings.database
     cfg.settings.crypto_database
     cfg.settings.plugin_databases.postgres

pkgs/tools/networking/maubot/wrapper.nix

@@ -39,7 +39,7 @@ let wrapper = { pythonPackages ? (_: [ ]), plugins ? (_: [ ]), baseConfig ? null
             if builtins.isNull (baseConfig.server.override_resource_path or null)
             then "${unwrapped}/${python3.sitePackages}/maubot/management/frontend/build"
             else baseConfig.server.override_resource_path;
-        })})} $out/${python3.sitePackages}/maubot/example-config.yaml
+        })} $out/${python3.sitePackages}/maubot/example-config.yaml
         rm -rf $out/bin
       ''}
       mkdir -p $out/bin