class Gem::Commands::CleanupCommand

def initialize
  super "cleanup",
        "Clean up old versions of installed gems",
        force: false, install_dir: Gem.dir,
        check_dev: true
  add_option("-n", "-d", "--dry-run",
             "Do not uninstall gems") do |_value, options|
    options[:dryrun] = true
  end
  add_option(:Deprecated, "--dryrun",
             "Do not uninstall gems") do |_value, options|
    options[:dryrun] = true
  end
  deprecate_option("--dryrun", extra_msg: "Use --dry-run instead")
  add_option("-D", "--[no-]check-development",
             "Check development dependencies while uninstalling",
             "(default: true)") do |value, options|
    options[:check_dev] = value
  end
  add_option("--[no-]user-install",
             "Cleanup in user's home directory instead",
             "of GEM_HOME.") do |value, options|
    options[:user_install] = value
  end
  @candidate_gems  = nil
  @default_gems    = []
  @full            = nil
  @gems_to_cleanup = nil
  @primary_gems    = nil
end