add_GEM

# File lib/rubygems/request_set/lockfile.rb, line 95
  def add_GEM out, spec_groups # :nodoc:
    return if spec_groups.empty?

    source_groups = spec_groups.values.flatten.group_by do |request|
      request.spec.source.uri
    end

    source_groups.sort_by { |group,| group.to_s }.map do |group, requests|
      out << "GEM"
      out << "  remote: #{group}"
      out << "  specs:"

      requests.sort_by { |request| request.name }.each do |request|
        next if request.spec.name == 'bundler'
        platform = "-#{request.spec.platform}" unless
          Gem::Platform::RUBY == request.spec.platform

        out << "    #{request.name} (#{request.version}#{platform})"

        request.full_spec.dependencies.sort.each do |dependency|
          next if dependency.type == :development

          requirement = dependency.requirement
          out << "      #{dependency.name}#{requirement.for_lockfile}"
        end
      end
      out << nil
    end
  end