Apparently when you tell Rubygems to fetch all specs and prerelease specs, it doesn't really.

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/bundler/source.rb b/lib/bundler/source.rb
index b7ec6c79..7d8914e5 100644
--- a/lib/bundler/source.rb
+++ b/lib/bundler/source.rb
@@ -53,9 +53,11 @@ module Bundler
         Bundler.ui.info "Fetching source index from #{uri}"
         old, Gem.sources = Gem.sources, ["#{uri}"]
 
-        Gem::SpecFetcher.new.list(true, true).each do |n,v|
+        fetch_all_specs do |n,v|
           v.each do |name, version, platform|
+            puts "#{name}, #{version}" if name == "will_paginate"
             next unless Gem::Platform.match(platform)
+            puts "  * added" if name == "will_paginate"
             spec = RemoteSpecification.new(name, version, platform, @uri)
             spec.source = self
             index << spec
@@ -66,6 +68,11 @@ module Bundler
       ensure
         Gem.sources = old
       end
+
+      def fetch_all_specs(&blk)
+        Gem::SpecFetcher.new.list(true, false).each(&blk)
+        Gem::SpecFetcher.new.list(false, true).each(&blk)
+      end
     end
 
     class SystemGems