utils: fix #129

* wrappers: fix missing variable

* bufferline: fix type error if indicator is null

plugins/bufferlines/bufferline.nix

@@ -263,7 +263,11 @@ in
           middle_mouse_command = cfg.middleMouseCommand;
           # deprecated, but might still work
           indicator_icon = cfg.indicatorIcon;
-          indicator = cfg.indicator;
+          indicator =
+            if cfg.indicator != null then with cfg.indicator; {
+              icon = icon;
+              style = style;
+            } else null;
           buffer_close_icon = cfg.bufferCloseIcon;
           modified_icon = cfg.modifiedIcon;
           close_icon = cfg.closeIcon;

wrappers/_shared.nix

@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ lib, pkgs, ... }:
 
 let
   inherit (lib) mkEnableOption mkOption mkOptionType mkForce mkMerge mkIf types;