From: Dave Cottingham <dcottingham00@...>
Date: 2008-08-16T23:20:45+09:00
Subject: on ubuntu, ruby can't find the gems

I'm working on Ubuntu 7.10, which presumably does things the Debian way.
I have loaded several gems without apparent problem, and I see them
sitting there in /var/lib/gems/1.8, which I understand is the Debian
place for them.  But when I try to use one of them in ruby, e.g. if I
say

require 'image_science'

it says

-:1:in `require': no such file to load -- image_science (LoadError)
        from -:1

So ruby apparently doesn't know to look for them there.  I've tried
defining RUBYLIB to '/var/lib/gems/1.8' or '/var/lib/gems/1.8/gems' or
/var/lib/gems' with no improvement.

So my question is, how is ruby supposed to find the gems?

BTW I got ruby and gem by apt-get, so it's a little surprising that they
aren't configured to play with each other.
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