From e259afe847f83ae26645d95bb73ec38279414c92 Mon Sep 17 00:00:00 2001
From: Arun Agrawal <arunagw@gmail.com>
Date: Thu, 7 Nov 2013 10:55:24 +0100
Subject: [PATCH] Added platform dependent gems

See #12475

If people are on rbx they will get the desired gem
---
 railties/lib/rails/generators/app_base.rb      | 9 +++++++++
 railties/test/generators/app_generator_test.rb | 7 +++++++
 2 files changed, 16 insertions(+)

diff --git a/railties/lib/rails/generators/app_base.rb b/railties/lib/rails/generators/app_base.rb
index 40145a7a50e96..962cb5eb1b327 100644
--- a/railties/lib/rails/generators/app_base.rb
+++ b/railties/lib/rails/generators/app_base.rb
@@ -110,6 +110,7 @@ def gemfile_entries
           javascript_gemfile_entry,
           jbuilder_gemfile_entry,
           sdoc_gemfile_entry,
+          platform_dependent_gemfile_entry,
           @extra_entries].flatten.find_all(&@gem_filter)
       end
 
@@ -316,6 +317,14 @@ def assets_gemfile_entry
         gems
       end
 
+      def platform_dependent_gemfile_entry
+        gems = []
+        if RUBY_ENGINE == 'rbx'
+          gems << GemfileEntry.version('rubysl', nil)
+        end
+        gems
+      end
+
       def jbuilder_gemfile_entry
         comment = 'Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder'
         GemfileEntry.version('jbuilder', '~> 1.2', comment)
diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 43a985615f7b7..e6cda07ae5068 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -305,6 +305,13 @@ def test_inclusion_of_javascript_runtime
     end
   end
 
+  def test_inclusion_of_plateform_dependent_gems
+    run_generator([destination_root])
+    if RUBY_ENGINE == 'rbx'
+      assert_gem 'rubysl'
+    end
+  end
+
   def test_creation_of_a_test_directory
     run_generator
     assert_file 'test'