title: How to force virtualenv to install latest setuptools and pip from pypi?
body: <p>Is it possible to force virtualenv to use the latest setuptools and pip available from pypi?  Essentially, I'm looking for the <strong><em>opposite</em></strong> of the <code>--never-download</code> flag.</p>
  
  <p>Currently, when I make a new virtualenv, it uses the local (old) versions that come bundled with virtualenv.</p>
  
  <pre><code>$ v.mk testvenv
  New python executable in testvenv/bin/python
  Installing setuptools............done.
  Installing pip...............done.
  $ pip show setuptools
  ---
  Name: setuptools
  Version: 0.6c11
  Location: /Users/cwilson/.virtualenvs/testvenv/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg
  Requires: 
  $ pip search setuptools
  [...]
  setuptools                - Easily download, build, install, upgrade, and
                              uninstall Python packages
  INSTALLED: 0.6c11
  LATEST:    0.7.2
  [...]
  </code></pre>