title: How do I use RVM and create globally available gems?
body: <p>I'm running Mac OSX 10.6.4 and have installed RVM.  Its been great so far, I really love the way it lets me manage having multiple versions of rails and ruby on the same machine without headaches!</p>
  
  <p>However, I don't want to have to install certain gems (such as passenger) for each setup. Is there a way to share gems between gemsets?  I have a 1.8.7@rails2.3.8 and 1.9.2@rails3, can I have gems such as passenger, mysql, and capistrano installed once and used with all versions?</p>