rvm

Horror story, part II

After my search from earlier this week I encountered another hard-to-debug problem.

After reading an article about using gemsets to isolate a specific environment, I was ready to try the rvm-gemset-thingy in a new project we're working on.

I already had rvm on my MacBook Pro, so this ought to be a breeze. After upgrading rvm to the newest version I installed a .rvmrc file and ran bundler install and I thought I was all set. The result, however, was very much the contrary!

I started to get all kinds of errors like:

          **Notice: C extension not loaded. This is required for optimum MongoDB Ruby driver performance.
            You can install the extension as follows:
            gem install bson_ext
            
            If you continue to receive this message after installing, make sure that the
            bson_ext gem is in your load path and that the bson_ext and mongo gems are of the same version.

and like:

~/.rvm/gems/ruby-1.8.7-p249@carr/gems/nokogiri-1.4.2/lib/nokogiri/nokogiri.bundle, 9): no suitable image found.

After a lot of searching and blaming mongo (which I'm using for the first time), I found this stackoverflow answer. I remembered I had setup rvm on Leopard and then upgraded to Snow Leopard.

So I did a complete reinstall of rvm and was really pleased to see everything working as expected. I hope I can save someone a bunch of time with this.