Rv, a new kind of Ruby management tool

> We expect to be able to silently run equivalents of both rvm install and bundle install at the beginning of every bundle exec,

Do I understand right it doesn't use bundler code for resolving gem requirements dependency tree, but uses it's own code meant to be compatible? Hmmm.

And also producing the `Gemfile.lock`, which has had kind of a lot of churn in bundler, which bundler has had to work to keep from breaking for people even when it's assumed they're all using (different versions of) bundler.

I remember bitching to André at a conference that the Gemfile.lock format was a right hassle to deal with for literally any other tool, before I realised he was bundler maintainer at the time...