title: Why does sysconfig.get_paths() contain local/ subdirectories on Ubuntu?
body: <p>In a Python 2.7 virtualenv (virtualenv 1.8.2) on Ubuntu 12.04, <code>sysconfig.get_paths()</code> contains some paths with <code>local</code>, for example:</p>
  
  <pre><code>'platlib': '/home/me/prog/py27/local/lib/python2.7/dist-packages',
  </code></pre>
  
  <p>The virtualenv is rooted at /home/me/prog/py27/. What is up with these paths?</p>