class ChefCLI::Policyfile::DeliverySupermarketSource

def universe_graph
  @universe_graph ||= begin
    @community_source.universe_graph.inject({}) do |truncated, (cookbook_name, version_and_deps_list)|
      sorted_versions = version_and_deps_list.keys.sort_by do |version_string|
        Semverse::Version.new(version_string)
      end
      greatest_version = sorted_versions.last
      truncated[cookbook_name] = { greatest_version => version_and_deps_list[greatest_version] }
      truncated
    end
  end
end