RVM Gemsets + Bundler == Awesome So I’m going to assume that you’re already familiar with RVM, Gemsets and Bundler. If you don’t know about them please follow the links and read up. Mixing RMV Gemsets and Bundler together is a kickass way to maintain environment isolation for your projects. First you want to create a .rvmrc file in your project’s root directory. RVM will traverse up the directory