It's not required if you use bundler, but I'd argue it's still a good idea. If you can avoid a runtime dependency on bundler, you probably should. > But after

It's not required if you use bundler, but I'd argue it's still a good idea. If you can avoid a runtime dependency on bundler, you probably should. > But after you are done with the project, there is no easy way to delete the gems that the project uses all at once. This is part of why I wrote gemenv (https://github.com/regularfry/gemenv.git https://github.com/regularfry/gemenv.git). It gives you a $GEM_HOME in the project directory, in the style of virtualenv.