class Bundler::Index

def search(query, base = nil)
  results = local_search(query, base)
  seen = Set.new(results.map { |spec| [spec.name, spec.version, spec.platform] })
  @sources.each do |source|
    source.search(query, base).each do |spec|
      lookup = [spec.name, spec.version, spec.platform]
      unless seen.include?(lookup)
        results << spec
        seen << lookup
      end
    end
  end
  results
end