Since we're all following very strict standards with regards to how our gems are constructed, we might as well pack all those gems back into a directory and use that directory in our load path. Once you do that, you'll discover that loading from all these paths and doing dependency resolution cost on every ruby invocation. On our machines, using wad saves us >500ms every time, on every call. Wad helps you with getting there: It vendors your Gemfile below `vendor/bundle`, then copies relevant source code to `vendor/lib`. All in one simple call.