title: installing matplotlib in a different default location
body: <p>In order to install matplotlib to a non default location, I change the file setup.cfg, setting the variable basedirlist.</p>
  
  <p>I do </p>
  
  <pre><code>python setup.py build
  </code></pre>
  
  <p>and then </p>
  
  <pre><code>python setup.py install
  </code></pre>
  
  <p>but the last fail because:</p>
  
  <pre><code>copying build/lib.linux-x86_64-2.6/mpl_toolkits/axes_grid1/colorbar.py -&gt; /opt/python/2.6.4/lib/python2.6/site-packages/mpl_toolkits/axes_grid1
  error: could not delete '/opt/python/2.6.4/lib/python2.6/site-packages/mpl_toolkits/axes_grid1/colorbar.py': Read-only file system
  </code></pre>
  
  <p>I am not root, so how  can I install matplotlib? is there any other variable I have to set?</p>