# File lib/nanoc.rb, line 10
  def self.version_information
    gem_info = defined?(Gem) ? "with RubyGems #{Gem::VERSION}" : "without RubyGems"
    engine   = defined?(RUBY_ENGINE) ? RUBY_ENGINE : "ruby"
    res = ''
    res << "nanoc #{Nanoc::VERSION} © 2007-2013 Denis Defreyne.\n"
    res << "Running #{engine} #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) on #{RUBY_PLATFORM} #{gem_info}.\n"
    res
  end