From: Ryan Davis <ryand-ruby@...>
Date: 2008-10-03T02:54:33+09:00
Subject: Re: Unable to [un]install old gems


On Oct 1, 2008, at 23:35 , Mitko Kostov wrote:

> I found a solution, really silly though.
>
> bash$ gem list -d
>
> bash$ sudo gem uninstall --install-dir
> /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 
> gems/1.8
> <package>

Those gems were bundled by apple and are not meant to be removed by  
users. This allows apple to do their own updates of the system gems.  
You shouldn't remove them.