rabbitmq: nixpkgs-fmt

nixos/modules/services/amqp/rabbitmq.nix

@@ -7,12 +7,13 @@ let
 
   inherit (builtins) concatStringsSep;
 
-  config_file_content = lib.generators.toKeyValue {} cfg.configItems;
+  config_file_content = lib.generators.toKeyValue { } cfg.configItems;
   config_file = pkgs.writeText "rabbitmq.conf" config_file_content;
 
   advanced_config_file = pkgs.writeText "advanced.config" cfg.config;
 
-in {
+in
+{
   ###### interface
   options = {
     services.rabbitmq = {
@@ -79,7 +80,7 @@ in {
       };
 
       configItems = mkOption {
-        default = {};
+        default = { };
         type = types.attrsOf types.str;
         example = literalExample ''
           {
@@ -123,13 +124,13 @@ in {
       };
 
       plugins = mkOption {
-        default = [];
+        default = [ ];
         type = types.listOf types.str;
         description = "The names of plugins to enable";
       };
 
       pluginDirs = mkOption {
-        default = [];
+        default = [ ];
         type = types.listOf types.path;
         description = "The list of directories containing external plugins";
       };