From: Caio Chassot <dev@...>
Date: 2010-08-20T13:00:47+09:00
Subject: Re: Ruby 1.9.2 is released

Caio Chassot wrote:
> sudo rm -rf /usr/local/lib/ruby/site_ruby/1.9.1/*ubygem*
> cd your-ruby-src-path
> sudo make install  # assuming you have it compiled from before

Oh, that's interesting.

Turns out rubygems was trying to load from 
/usr/local/lib/ruby/site_ruby/1.9.1/rubygems, but the newly installed 
rubygems are in /usr/local/lib/ruby/1.9.1/rubygems. So, that's probably 
what was wrong. I guess you don't even need to `make install` again, 
just nuke the unwanted gem installation in site_ruby.

Again, the paths:

* /usr/local/lib/ruby/1.9.1/rubygems            # <== good
* /usr/local/lib/ruby/site_ruby/1.9.1/rubygems  # <== bad

Fair warning: This may only apply to my system. Think twice before you 
go `rm -rf`-happy on yours. :P
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