From: David Brodbeck <brodbd@...>
Date: 2009-10-09T05:51:33+09:00
Subject: Re: Difficulty updating Ruby Gems in a non-standard location


On Oct 8, 2009, at 11:28 AM, Aaron Patterson wrote:

> On Oct 8, 2009, at 10:53 AM, David Brodbeck wrote:
>
>> I have Ruby Gems installed in a non-standard location.  Both  
>> $GEM_PREFIX and $GEM_HOME are set.  I'm attempting to update from  
>> 0.9.4 to 1.3.5, without success.
>>
>> First attempt:  I tried "gem update --system".  This didn't work  
>> because it ignored $GEM_PREFIX and installed in the wrong location.
>>
>> Second attempt: I tried the instructions here: http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/243916
>>  This completely broke gem; every time I tried to do something with  
>> it I got this error:
>>  /opt/ruby-gems/bin/gem:14: undefined method `ruby_version' for  
>> Gem:Module (NoMethodError)
>>
>> Third attempt: I restored my gem directory from backup and tried  
>> "gem install rubygems-update && update_rubygems".  This gave the  
>> following error:
>>  Error: Cannot find RubyGems Update Path!
>>
>>  RubyGems has already been updated.
>>  The rubygems-update gem may now be uninstalled.
>>  E.g.    gem uninstall rubygems-update
>>
>> So, now I'm stumped.  How do I update Ruby Gems if it's not  
>> installed in the standard location?
>
> I would suggest downloading the tar.gz and running setup.rb (making  
> sure GEM_PREFIX and GEM_HOME are set).  That might clear up your  
> problems.
>
> You can grab the tar.gz file here:
>
>    http://rubyforge.org/frs/?group_id=126

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.

-- 

David Brodbeck
System Administrator, Linguistics
University of Washington