title: Installing Ruby 1.9 on OS X Leopard using /usr/local - RVM issues
body: <p>I have to run a Rails (3.0.6) app locally that requires Ruby 1.9.2 (plus Mongo). I'd like to install Ruby 1.9.2 alongside my existing 1.8.7 and be able to swap between them as necessary. I prefer installing to usr/local over Macports etc. Any recommendations? I've tried installing RVM but this has proved such a pain on OS X I'd rather avoid that too.</p>
  
  <p>Is there another way of running multiple Ruby versions (maybe <a href="https://stackoverflow.com/questions/2179959/best-practice-for-installing-multiple-versions-of-ruby-apart-from-rvm">with a prefix like this</a>)? I only need to switch to 1.9 for this project. Or has anyone a good solution to the known OS X/RVM <a href="http://groups.google.com/group/rubyversionmanager/browse_thread/thread/bc658ca82c40a533" rel="nofollow noreferrer">install</a> <a href="http://groups.google.com/group/rubyversionmanager/browse_thread/thread/54aaa8bd1cf1ad26/7504e6e6d94e9546" rel="nofollow noreferrer">issues</a>? Specifically, on Tiger/10.4 bash doesn't support errtrace.</p>
  
  <p>Update: solved with a new RVM install script: see <a href="http://bit.ly/qql9fx" rel="nofollow noreferrer">RVM on OS X 10.4 - possible?</a>.</p>