# File lib/fpm/package/osxpkg.rb, line 118
  def input(input_path)
    # TODO: Fail if it's a Distribution pkg or old-fashioned
    expand_dir = File.join(build_path, "expand")
    # expand_dir must not already exist for pkgutil --expand
    safesystem("pkgutil --expand #{input_path} #{expand_dir}")

    extract_info(input_path)

    # extract Payload
    safesystem("tar -xz -f #{expand_dir}/Payload -C #{staging_path}")
  end