I was in a update mood so I updated my system to use GWT 1.5.0 and ruby 1.8.7.

After updated ruby I tried to figure out how to keep the old gems. My solution was to set the following env variables (similar result could be achieved with .gemrc).

• export GEM_HOME=/Library/Ruby/Gems/1.8
• export GEM_PATH=/usr/lib/ruby/gems/1.8

But in the end I decided to revert back to ruby 1.8.6…. because I realised a problem that I worked around earlier is bigger than I thought. The problem was that hpricot 0.6 didn’t load properly under 1.8.7. I was too focused on understanding how OS X setup ruby framework and replicating it in 1.8.7.

All was not lost, someone has found the problem and fixed it. So once a new hpricot released then I should be able to re-apply what I learnt.