# File setup.rb, line 929
  def init_installers
    @installers = {}
    @packages.each do |pack|
      @installers[pack] = Installer.new(@config, @options,
                                       "#{@ardir}/packages/#{pack}",
                                       "packages/#{pack}")
    end

    with    = extract_selection(config('with'))
    without = extract_selection(config('without'))
    @selected = @installers.keys.select {|name|
                  (with.empty? or with.include?(name)) \
                      and not without.include?(name)
                }
  end