Make Controller and Helper patches autoloadable

app/decorators/controllers/alchemy/solidus/alchemy_base_controller_decorator.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Solidus
+    module AlchemyBaseControllerDecorator
+      def self.prepended(base)
+        base.include Spree::Core::ControllerHelpers::Auth
+        base.include Spree::Core::ControllerHelpers::Common
+        base.include Spree::Core::ControllerHelpers::Order
+        base.include Spree::Core::ControllerHelpers::PaymentParameters
+        base.include Spree::Core::ControllerHelpers::Pricing
+        base.include Spree::Core::ControllerHelpers::Search
+        base.include Spree::Core::ControllerHelpers::Store
+        base.include Spree::Core::ControllerHelpers::StrongParameters
+      end
+
+      if defined?(::Alchemy::BaseController)
+        ::Alchemy::BaseController.prepend self
+      end
+    end
+  end
+end

app/decorators/helpers/alchemy/solidus/alchemy_base_helper_decorator.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Solidus
+    module AlchemyBaseHelperDecorator
+      def self.prepended(base)
+        base.include Spree::BaseHelper
+        base.include Spree::CheckoutHelper
+        base.include Spree::ProductsHelper
+        base.include Spree::StoreHelper
+        base.include Spree::TaxonsHelper
+      end
+
+      if defined?(::Alchemy::BaseHelper)
+        ::Alchemy::BaseHelper.prepend self
+      end
+    end
+  end
+end

lib/alchemy/solidus/engine.rb

@@ -36,9 +36,6 @@ class Engine < ::Rails::Engine
           # See https://github.com/AlchemyCMS/alchemy_cms/issues/1626
           ActionView::Base.prefix_partial_path_with_controller_namespace = false
         end
-
-        # Allows to use Solidus helpers within Alchemys controller views
-        require_dependency "alchemy/solidus/use_solidus_layout"
       end
     end
   end