install_lib

# File lib/rubygems/commands/setup_command.rb, line 208
  def install_lib(lib_dir)
    say "Installing RubyGems" if @verbose

    Dir.chdir 'lib' do
      lib_files = Dir[File.join('**', '*rb')]

      lib_files.each do |lib_file|
        dest_file = File.join lib_dir, lib_file
        dest_dir = File.dirname dest_file
        mkdir_p dest_dir unless File.directory? dest_dir

        install lib_file, dest_file, :mode => 0644
      end
    end
  end