Follow my own advice and use the correct API to get the class to use.

lib/poise_languages/system/resource.rb

@@ -133,18 +133,19 @@ def package_resources(action)
         end
 
         Chef::Log.debug("[#{new_resource.parent}] Building package resource using #{packages.inspect}.")
+        package_resource_class = Chef::Resource.resource_for_node(:package, node)
         @package_resource ||= if node.platform_family?('rhel', 'fedora', 'amazon', 'mac_os_x')
           # @todo Can't use multi-package mode with yum pending https://github.com/chef/chef/issues/3476.
           packages.map do |name, version|
-            Chef::Resource::Package.new(name, run_context).tap do |r|
+            package_resource_class.new(name, run_context).tap do |r|
               r.version(version)
               r.action(action)
               r.declared_type = :package
               r.retries(5)
             end
           end
         else
-          [Chef::Resource::Package.new(packages.keys, run_context).tap do |r|
+          [package_resource_class.new(packages.keys, run_context).tap do |r|
             r.version(packages.values)
             r.action(action)
             r.declared_type = :package