From: Yehuda Katz Date: 2010-07-03T06:32:21+09:00 Subject: [ruby-core:31006] [Bug #3140] gem activation has changed between 1.8 and 1.9 Issue #3140 has been updated by Yehuda Katz. Here is a real-world demonstration of this bug: ~/Code/tmp /master > gem install actionpack -v 3.0.0.beta4 Successfully installed actionpack-3.0.0.beta4 1 gem installed ~/Code/tmp /master > gem install rack Successfully installed rack-1.2.1 1 gem installed ~/Code/tmp /master > gem dependency actionpack -v 3.0.0.beta4 Gem actionpack-3.0.0.beta4 activemodel (= 3.0.0.beta4, runtime) activesupport (= 3.0.0.beta4, runtime) builder (~> 2.1.2, runtime) erubis (~> 2.6.5, runtime) i18n (~> 0.4.1, runtime) rack (~> 1.1.0, runtime) rack-mount (~> 0.6.3, runtime) rack-test (~> 0.5.4, runtime) tzinfo (~> 0.3.16, runtime) ~/Code/tmp /master > irb ruby-1.9.2-head > require "action_dispatch" => true ruby-1.9.2-head > Rack.release => "1.2" ---------------------------------------- http://redmine.ruby-lang.org/issues/show/3140 ---------------------------------------- http://redmine.ruby-lang.org