From: Daniel DeLorme <dan-ml@...42.com>
Date: 2009-04-21T07:51:22+09:00
Subject: Re: 1.8 and 1.9 on arch linux

Martin DeMello wrote:
> On Mon, Apr 20, 2009 at 8:17 AM, Saji N. Hameed <saji@apcc21.net> wrote:
>>> yes - me!
>> sorry, my reply was incomplete... in my case, i just compiled 1.9 separately
>> in a separate directory without using the package manager, and aliased
>> the 1.9 version using ruby19 and irb19. In case of 1.9, gems get installed
>> under the 1.9 installation root without disturbing the main ruby installation.
>> So I guess rake, rdoc etc should work fine if you use either one (1.8 or 1.9)
>>
>> i don't know if my answer helps much... :)
> 
> I have that much working already :) What I want to do is have the
> default ruby switch between 1.8 and 1.9 when I run a command - right
> now I run 1.8 as 'ruby' and 1.9 as ruby-1.9. I hacked something up by
> manually renaming ruby to ruby-1.8 and adding symlinks, but I was
> hoping there was some sort of standard way to do it.

I'm not sure if it's going to help, but what I did was compile ruby1.8
and 1.9 in separate directories (/opt/ruby/1.8 and /opt/ruby/1.9) and
then prepend either /opt/ruby/1.8/bin or /opt/ruby/1.9/bin to the $PATH
depending on which version I want to use.

Daniel