Fix a regression with Chef 10 in Ruby

Author: sethvargo

recipes/ruby.rb

@@ -5,7 +5,7 @@
 # Author:: Jesse Howarth (<[email protected]>)
 # Author:: Jamie Winsor (<[email protected]>)
 #
-# Copyright 2008-2012, Opscode, Inc.
+# Copyright 2008-2013, Opscode, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -24,7 +24,13 @@
 include_recipe 'build-essential::default'
 include_recipe 'mysql::client'
 
-if run_context.loaded_recipes.include?('mysql::percona_repo')
+loaded_recipes = if run_context.respond_to?(:loaded_recipes)
+                   run_context.loaded_recipes
+                 else
+                   run_context.run_state[:seen_recipes]
+                 end
+
+if loaded_recipes.include?('mysql::percona_repo')
   case node['platform_family']
   when 'debian'
     resources('apt_repository[percona]').run_action(:add)