From: David Brodbeck <brodbd@...>
Date: 2009-10-10T07:14:42+09:00
Subject: Re: Difficulty updating Ruby Gems in a non-standard location


On Oct 8, 2009, at 3:39 PM, David Brodbeck wrote:

> On Oct 8, 2009, at 2:43 PM, spox wrote:
>
>>> Unfortunately, that failed in the same way "gem update --system" did
>>> -- it ignored $GEM_PREFIX and tried to install gem under /usr/bin/
>>> gem.  The gem installation in /opt/ruby-gems was left untouched.
>>
>> Using the source you downloaded, make sure that GEM_HOME is  
>> exported, then run
>> setup with the prefix to the install location:
>>
>> ruby setup.rb --prefix=/opt/ruby-gems
>
> That went to the right place, but now gem is broken:
>
> $ gem
> /opt/ruby-gems/bin/gem:14: undefined method `ruby_version' for  
> Gem:Module (NoMethodError)

I finally figured it out.  I had two copies under ruby-gems, a new one  
in /opt/ruby-gems/lib and an old one in /opt/ruby-gems/lib/site_ruby/ 
1.8.  I deleted the latter and it seems to be working now.

Thanks to everyone for their help.

-- 

David Brodbeck
System Administrator, Linguistics
University of Washington