On Dec 16, 2008, at 11:58 AM, Kenneth McDonald wrote:

> I just tried (on OS X 10.5) an install of hpricot, and was told that  
> it couldn't be compiled because the ruby headers could not be found.  
> Curiously, I can install it on my notebook, which is also OS X 10.5.  
> Anyone know the cure for this? Should I install the latest version  
> of Ruby?

You need to install Apple's Developer Tools (Xcode).  Details can be  
found here:

http://danbenjamin.com/articles/2008/02/ruby-rails-leopard

James Edward Gray II