From: "Iñaki Baz Castillo" <ibc@...>
Date: 2011-02-28T19:49:09+09:00
Subject: Re: "gem NAME, VERSION" && "require NAME" fails due to version conflict

2011/2/28 Iñaki Baz Castillo <ibc@aliax.net>:
>> 10002 % gem list nokogiri
>> nokogiri (1.4.4, 1.4.1)
>> 10003 % irb
>>>> require "rubygems"
>> => true
>>>> gem "nokogiri", "= 1.4.1"
>> => true
>>>> require "nokogiri"
>> => true
>>>> Nokogiri
>> => Nokogiri
>> 10004 % gem -v
>> 1.5.3
>
> Same fails in my system with RubyGem 1.3.7. Note however that I'm
> using the gem command provided by the Debian/Ubuntu package. I will
> check upgrading to 1.5.3.


Annoying, I get the very same error with Gem 1.5.3:


~# gem list nokogiri
nokogiri (1.4.4, 1.4.3)

irb(main):002:0> require "rubygems"
true

irb(main):003:0> gem "nokogiri", "=1.4.3"
true

irb(main):004:0> require "nokogiri"
Gem::LoadError: can't activate nokogiri (= 1.4.4, runtime) for [],
already activated nokogiri-1.4.3 for []

~# gem -v
1.5.3

-- 
Iñaki Baz Castillo
<ibc@aliax.net>