From: doog <doog@...>
Date: 2006-11-28T11:29:33+09:00
Subject: Re: Ruby 1.8.5 on Mac OS X

Got 1.8.5 installed on Macintosh with gems.
Thanks for all your help.   I really appreciate you helping me get past
this.

Basically, I put "/usr/local/bin" ahead of "/usr/bin" in my PATH in
~/.profile
Then I re-installed rubygem to "/usr/local" and

$ ruby setup.rb config --prefix=/usr/local

and re-installed all my gems, which automatically installed them into
/usr/local/lib/ruby/gems

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Details below...

> I think you've installed rubygems using /usr/bin/ruby, the Apple's one ?

Yes.  I installed rubygems when Apple's /usr/bin/ruby was the only
version on my Mac.

> may be you didn't change your PATH hit before ?

You mean change PATH to include /usr/local/bin/ruby before installing
rubygems?
That would be correct, since /usr/local/bin/ruby didn't yet exist when
I installed rubygems.

> personaly in such a situation i would re-install rubygems to insure it
> is linked to the right ruby.

Okay, I did succeed re-installing ruby gems

$ cd rubygems-0.9.1
$ ruby setup.rb config --prefix=/usr/local

I figured out which value to pass in to --prefix by looking in
setup.rb:

$ grep setup.rb | grep prefix
  _stdruby         = "$prefix/lib/ruby/#{version}"

The argument to --prefix should be clarified in
http://docs.rubygems.org/read/chapter/3

Calling "gem environment" now prints nicely:

$ gem environment
Rubygems Environment:
  - VERSION: 0.9.0 (0.9.0)
  - GEM PATH:
     - /usr/local/lib/ruby/gems/1.8
   ...