sstephenson/sprockets — pull request #302 by petebrowne (2012-03-03 16:03:38+00:00)
Title: Only set a :cache_store for Sass::Engine if there's a cache

If a Sprockets environment doesn't have a cache set and a SassCacheStore is used, Sass will not use any caching. It would be better to set `:sass_cache => nil` in this case so Sass will use its default caching.