From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-09-01T22:16:24+09:00
Subject: Re: Ruby 1.8 and 1.9

>
>> With Ruby Gems you might run into some trouble though.
>
> Buut yes, this is where I thought I may come unstuck ;-)
>
> Any thoughts?
>
> Cliff
>
Well, number 1, I've never actually used or installed 1.9 yet, no  
hurry for me.
So I don't know if the load path is any different or things like the  
gem path. I imagine that when you do the installation of rubygems,  
you can alias it as well, so that you call gem19 or something and set  
your gem_path to be for 1.9's gem directory (wherever that is,  
probably similar to 1.8, but I don't know)
(If I were you I'd keep 1.8 stuff unaliased and normal for now)

Now here's the trick... when you install any command line software in  
a custom manner, it becomes very tricky for things installed on top  
of that. (3rd party software) Other stuff may make stupid (?)  
assumptions about your installation.

So here I've thought of a better way to do this.
You're using CygWin so I'm assuming it's windows and I don't know  
much about this on windows, but you might try creating another user  
account in windows, and install everything for ruby 1.9 under that  
instead. if it works, you can totally avoid all the fragile custom  
installation stuff. Just a logout / login away.