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POMongoid/activesupport version problem
 

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    <p>I'm attempting to use Mongoid from a plain Ruby script (not via Rails or any other framework) and I think I'm running into some version dependency conflicts:</p> <pre><code>/opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:779:in `report_activate_error': RubyGem version error: activesupport(3.0.0 not &gt;= 2.2.2, &lt; 3.0.pre) (Gem::LoadError) from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:214:in `activate' from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `gem' from /opt/local/lib/ruby/gems/1.8/gems/mongoid-1.9.1/lib/mongoid.rb:24 from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require' from ./rubymongo.rb:4 </code></pre> <p>My local Rails has been upgraded to 3.0.0 already, and if I read the error correctly, somewhere there's a requirement saying activesupport has to be &lt; 3.0.pre, and 3.0.0 is too new?</p> <p>Is this because Rails 3.0 is brand new and maybe Mongoid has a config option somewhere with 3.0.pre defined that I need to upgrade? Where would I do that?</p> <p>I used to have the old Rails still installed too, but got a different error:</p> <pre><code>/opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:233:in `activate': can't activate activesupport (&gt;= 2.2.2, &lt; 3.0.pre, runtime) for [], already activated activesupport-3.0.0 for ["mongoid-1.9.1"] (Gem::LoadError) from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `gem' from /opt/local/lib/ruby/gems/1.8/gems/mongoid-1.9.1/lib/mongoid.rb:24 from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require' from ./rubymongo.rb:4 </code></pre> <p>If I go back to having an older activesupport installed, how do I make sure the newer one isn't being hit as well?</p> <p>I'm still very new to Ruby, so please elaborate in your answer.</p> <p>After upgrading to the Mongoid 2.0 beta per Simon's suggestion, I'm getting a new conflict about bson being too new:</p> <pre><code>/opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:233:in `activate': can't activate bson (= 1.0.4, runtime) for ["mongoid-2.0.0.beta.17"], already activated bson-1.0.7 for ["mongo-1.0.7", "mongoid-2.0.0.beta.17"] (Gem::LoadError) from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:249:in `activate' from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `each' from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `activate' from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:35:in `require' from ./rubymongo.rb:4 </code></pre> <p>Why is bson 1.0.4 already loaded? Is something else trying to load it explicitly? All my simple .rb script requires is rubygems and mongoid at this point.</p> <p>Here's all the gems I use that sound relevant:</p> <pre><code>actionpack (3.0.0, 2.3.8) activemodel (3.0.0) activerecord (3.0.0) activeresource (3.0.0) activesupport (3.0.0) bson (1.0.7, 1.0.4) bson_ext (1.0.7) mongo (1.0.8, 1.0.7) mongo_ext (0.19.3) mongoid (2.0.0.beta.17) rails (3.0.0, 2.3.8) </code></pre>
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    1. COReally good question! I ran into similar situation. I simply wanted to do some benchmarking separately from Rails. Steve Hook's suggestion worked nicely.
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