class Gem::Commands::CleanupCommand

def initialize
  super 'cleanup',
        'Clean up old versions of installed gems',
        :force => false, :install_dir => Gem.dir
  add_option('-n', '-d', '--dryrun',
             'Do not uninstall gems') do |value, options|
    options[:dryrun] = true
  end
  @candidate_gems  = nil
  @default_gems    = []
  @full            = nil
  @gems_to_cleanup = nil
  @original_home   = nil
  @original_path   = nil
  @primary_gems    = nil
end