rvm

Getting rvm rubies to compile with the rvm packages isn't turning out that easy.

First off - you need to get XCode for Lion installed from the App Store (even if you upgraded from Snow Leopard - Lion needs a newer version). In addition - the App Store downloads an XCode installer - you also have to run it to get it installed ;)

So I grabbed the latest rvm:

bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

This puts up the following message:

By convention I use an rvm gemset per project - named after the directory that the project lives in.

For example src/rails/foo would have gemset foo

Since I switch a lot between machines - I always end up having to go check if the gemset exists and create it if not.

A small bash function (dump it in .bash_profile) and then when in the projects home dir you can just run rvmgo (or if you want a different ruby then e.g. rvmgo 1.8.7) and it will switch to the correct version/gemset creating the gemset if needed.

Note - it will not install a missing ruby.