From: Brian Candler <b.candler@...>
Date: 2010-07-13T21:36:24+09:00
Subject: Re: Standard Library vs. 3rd Party Library

Thomas Sawyer wrote:
>> Thus the only way to get the
> latest version of RDoc is to use.
> 
>   require 'rubygems'
>   gem 'rdoc'

I have the same problem with soap4r. To avoid the crufty version 
supplied with Ruby:

require 'rubygems'
gem 'soap4r'

I don't have a particularly good solution for this, except to localise 
this code to the startup script:

[bin/myapp]
#!/usr/bin/ruby
require 'rubygems'
gem 'soap4r','>= 1.5.8'
$:.unshift File.join(File.dirname(__FILE__),'..','lib')
require 'myapp'
MyApp.run

It's ugly, but at least it's only in one place. Should anyone need to 
run your code with a non-rubygems framework, they can make a new startup 
script.

Also, I don't know if there's a way to test if rubygems is present, but 
at worst you could do:

begin
  gem 'soap4r'
rescue NoMethodError
end
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