title: In rake, how to create a package that contains a file but renames it inside the package
body: <p>I would like to create a package that contains a file but renames it inside the package.</p>
  
  <p>For example:</p>
  
  <pre><code>  Rake::PackageTask.new("rake", "1.2.3") do |p|
      p.package_files.include("aa.rb")
    end
  </code></pre>
  
  <p>I would like <code>aa.rb</code> to be named <code>bb.rb</code> inside the package.</p>
  
  <p>How can I do this elegantly?</p>