class Bundler::Installer

def run(options)
  if actual_dependencies.empty?
    Bundler.ui.warn "The Gemfile specifies no dependencies"
    return
  end
  # Ensure that BUNDLE_PATH exists
  FileUtils.mkdir_p(Bundler.bundle_path)
  # Must install gems in the order that the resolver provides
  # as dependencies might actually affect the installation of
  # the gem.
  specs.each do |spec|
    spec.source.fetch(spec) if spec.source.respond_to?(:fetch)
    if spec.groups & Bundler.settings.without == spec.groups
      Bundler.ui.debug "  * Not in requested group; skipping."
      next
    end
    # unless spec.source.is_a?(Source::SystemGems)
      Bundler.ui.info "Installing #{spec.name} (#{spec.version}) from #{spec.source} "
    # end
    spec.source.install(spec)
    Bundler.ui.info ""
  end
  Bundler.ui.confirm "Your bundle is complete!"
end