class Bundler::Graph

def _patching_gem_dependency_class
  # method borrow from rubygems/dependency.rb
  # redefinition of matching_specs will also redefine to_spec and to_specs
  Gem::Dependency.class_eval do
    def matching_specs(platform_only = false)
      matches = Bundler.load.specs.select do |spec|
        name == spec.name &&
          requirement.satisfied_by?(spec.version)
      end
      if platform_only
        matches.select! do |spec|
          Gem::Platform.match spec.platform
        end
      end
      matches = matches.sort_by(&:sort_obj) # HACK: shouldn't be needed
    end
  end
end