only require sprockets when ENV[SPROCKETS] == 'true'

Author: joker-777

Gemfile

@@ -15,4 +15,6 @@ gemspec
 gem "activeadmin"
 gem "mimemagic", github: "mimemagicrb/mimemagic", ref: "01f92d86d15d85cfd0f20dabd025dcbd36a8a60f"
 
+gem "sassc", require: ENV["SPROCKETS"] == "true"
+gem "sassc-rails", require: ENV["SPROCKETS"] == "true"
 gem "webpacker", "~> 5.0", require: ENV["SPROCKETS"] != "true"

lib/activeadmin_addons/engine.rb

@@ -1,6 +1,10 @@
 module ActiveAdminAddons
   module Rails
     class Engine < ::Rails::Engine
+      if ENV["SPROCKETS"] == "true"
+        require 'sassc'
+        require 'sassc-rails'
+      end
       require "xdan-datetimepicker-rails"
       require "require_all"
       require "active_material"
@@ -9,7 +13,7 @@ class Engine < ::Rails::Engine
         require_rel "support"
         require_rel "addons"
         require_rel "active_admin_config"
-        app.config.assets.precompile += %w(fileicons/*.png switches/switch_*.png
+        app.config.assets.precompile += %w(select.scss fileicons/*.png switches/switch_*.png
                                            material/icons *.svg)
       end
     end