From: Dave Thomas Date: 2008-02-07T03:08:56+09:00 Subject: gem versioning patch doesn't seem to have been applied to HEAD A while back, I believe that Rich Kilmer created a patch to gems in 1.9 that fixed the following: dave[RUBY3/Book 12:05:12] gem list builder *** LOCAL GEMS *** builder (2.1.2, 0.1.1) dave[RUBY3/Book 12:05:16] irb irb(main):001:0> $:.grep /builder/ => ["/usr/local/rubybook/lib/ruby/gems/1.9.0/gems/builder-2.1.2/lib"] irb(main):002:0> gem 'builder', '< 1.0' => true irb(main):003:0> $:.grep /builder/ => ["/usr/local/rubybook/lib/ruby/gems/1.9.0/gems/builder-2.1.2/lib", "/usr/local/rubybook/lib/ruby/gems/1.9.0/gems/builder-0.1.1/lib"] (The 0.1.1 gem is in the include path _after_ the default, so it won't get loaded by a subsequent require) Dave