def run
  check_for_deployment_mode!
  gems.each do |gem_name|
    Bundler::CLI::Common.select_spec(gem_name)
  end
  Bundler.definition.validate_runtime!
  current_specs = Bundler.ui.silence { Bundler.definition.resolve }
  current_dependencies = Bundler.ui.silence do
    Bundler.load.dependencies.map {|dep| [dep.name, dep] }.to_h
  end
  definition = if gems.empty? && sources.empty?
    
    Bundler.definition(true)
  else
    Bundler.definition(:gems => gems, :sources => sources)
  end
  Bundler::CLI::Common.configure_gem_version_promoter(
    Bundler.definition,
    options
  )
  definition_resolution = proc do
    options[:local] ? definition.resolve_with_cache! : definition.resolve_remotely!
  end
  if options[:parseable]
    Bundler.ui.silence(&definition_resolution)
  else
    definition_resolution.call
  end
  Bundler.ui.info ""
  
  gemfile_specs, dependency_specs = current_specs.partition do |spec|
    current_dependencies.key? spec.name
  end
  specs = if options["only-explicit"]
    gemfile_specs
  else
    gemfile_specs + dependency_specs
  end
  specs.sort_by(&:name).each do |current_spec|
    next if !gems.empty? && !gems.include?(current_spec.name)
    dependency = current_dependencies[current_spec.name]
    active_spec = retrieve_active_spec(definition, current_spec)
    next if active_spec.nil?
    next if filter_options_patch.any? &&
      !update_present_via_semver_portions(current_spec, active_spec, options)
    gem_outdated = Gem::Version.new(active_spec.version) > Gem::Version.new(current_spec.version)
    next unless gem_outdated || (current_spec.git_version != active_spec.git_version)
    groups = nil
    if dependency && !options[:parseable]
      groups = dependency.groups.join(", ")
    end
    outdated_gems_list << { :active_spec => active_spec,
                            :current_spec => current_spec,
                            :dependency => dependency,
                            :groups => groups }
    outdated_gems_by_groups[groups] ||= []
    outdated_gems_by_groups[groups] << outdated_gems_list[-1]
  end
  if outdated_gems_list.empty?
    display_nothing_outdated_message
  else
    unless options[:parseable]
      Bundler.ui.info(header_outdated_message)
    end
    if options_include_groups
      ordered_groups = outdated_gems_by_groups.keys.compact.sort
      ordered_groups.insert(0, nil).each do |groups|
        gems = outdated_gems_by_groups[groups]
        contains_group = if groups
          groups.split(", ").include?(options[:group])
        else
          options[:group] == "group"
        end
        next if (!options[:groups] && !contains_group) || gems.nil?
        unless options[:parseable]
          Bundler.ui.info(header_group_message(groups))
        end
        print_gems(gems)
      end
    else
      print_gems(outdated_gems_list)
    end
    exit 1
  end
end