From 954d73df5312f4829c96a76f1929e45597e85680 Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Mon, 28 Mar 2011 13:22:13 -0500
Subject: Add use_sprockets flag

---
 railties/lib/rails/application/configuration.rb | 4 +---
 railties/lib/rails/engine.rb                    | 4 +++-
 railties/lib/rails/engine/configuration.rb      | 5 ++++-
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index 6901748d04..c74bcbedf2 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -9,8 +9,7 @@ module Rails
                     :filter_parameters, :helpers_paths, :logger,
                     :preload_frameworks, :reload_plugins,
                     :secret_token, :serve_static_assets, :session_options,
-                    :time_zone, :whiny_nils,
-                    :compile_assets
+                    :time_zone, :whiny_nils
 
       attr_writer :log_level
 
@@ -29,7 +28,6 @@ module Rails
         @log_level                   = nil
         @middleware                  = app_middleware
         @generators                  = app_generators
-        @compile_assets              = []
       end
 
       def compiled_asset_path
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 23177df11f..1c4e5dadc7 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -434,7 +434,7 @@ module Rails
 
     def routes
       @routes ||= ActionDispatch::Routing::RouteSet.new
-      @routes.add_route(assets, {}, {}, {}, nil, false)
+      @routes.add_route(assets, {}, {}, {}, nil, false) if config.use_sprockets
       @routes.append(&Proc.new) if block_given?
       @routes
     end
@@ -458,6 +458,8 @@ module Rails
     end
 
     def build_asset_environment
+      return nil if !use_sprockets
+
       require 'sprockets'
 
       env = Sprockets::Environment.new(root.to_s)
diff --git a/railties/lib/rails/engine/configuration.rb b/railties/lib/rails/engine/configuration.rb
index 4f458b0aee..1b4a712c75 100644
--- a/railties/lib/rails/engine/configuration.rb
+++ b/railties/lib/rails/engine/configuration.rb
@@ -5,12 +5,15 @@ module Rails
     class Configuration < ::Rails::Railtie::Configuration
       attr_reader :root
       attr_writer :middleware, :eager_load_paths, :autoload_once_paths, :autoload_paths
-      attr_accessor :plugins, :asset_path
+      attr_accessor :plugins, :asset_path, :use_sprockets, :compile_assets
 
       def initialize(root=nil)
         super()
         @root = root
         @generators = app_generators.dup
+
+        @use_sprockets  = false
+        @compile_assets = []
       end
 
       # Returns the middleware stack for the engine.
-- 
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