From: "Jörg W Mittag" <JoergWMittag+Usenet@...>
Date: 2009-08-29T00:45:09+09:00
Subject: Re: RubyGems - change location from local?

Adam Wilson wrote:
[...]
> I installed and checked using gem list, and it seems to be only showing
> those gems installed since I recently upgraded RubyGems.
[...]
> Ideally, I would switch RubyGems to use usr/lib as most of my gems are
> installed there. I could not find it in the docs, any tips much
> appreciated.

The environment variable GEM_HOME contains a single directory, which
tells RubyGems where to install new gems and the environment variable
GEM_PATH contains a list of paths where RubyGems looks for gems.

So, in your case you would probably want to set GEM_HOME to /usr/lib,
so that all your newly installed gems end up there, and you would set
GEM_PATH to /usr/lib:/usr/local/lib (not sure about the syntax, is
that colon or semicolon?) so that it finds both.

Alternatively you could set GEM_HOME to /usr/local/lib, gem uninstall
everything, then set to /usr/lib and reinstall. That way you get rid
of the old "ghost" gems there. (Note: there are probably a million
better ways to do this. I know that the RubyGems developers read all
RubyGems related messages, so they'll surely correct me if I'm wrong.)

jwm