# File lib/bundler/source/rubygems.rb, line 313
      def cached_specs
        @cached_specs ||= begin
          idx = installed_specs.dup

          path = Bundler.app_cache
          Dir["#{path}/*.gem"].each do |gemfile|
            next if gemfile =~ /^bundler\-[\d\.]+?\.gem/
            s ||= Bundler.rubygems.spec_from_gem(gemfile)
            s.source = self
            idx << s
          end
        end

        idx
      end