From: Alex Rice <agr@...>
Date: 2009-12-29T07:37:49+09:00
Subject: Re: question about multiple ruby + gems installations for de

Phillip Gawlowski wrote:
>
> The path seems to be built on runtime (I don't have a .gemrc defined in
> my home dir).

The root of my confusion, is as follows. In retrospect it's not 
surprising though. I have everything straightened out now.

If you run (in Unix - maybe no equivalent in Windows )
strings ruby | grep lib
You can see your lib directories are compiled into the binary.

So gem uses that path  appends ruby/gems/[version] and that becomes the 
default GEM_PATH.

It adds to the gem path if there is a ~/.gem directory with stuff in it. 
.gemrc and GEM_PATH environment variables may further change or override 
the gem paths.

Summary, it's a no-no to move around a ruby install directory like I was 
doing, because the lib  paths will get broken.
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