title: Homebrew unbrewed files
body: <p>I've been trying to use homebrew to install python and finally gotten that to work. In the process of trying to make that work I ran: </p>
  
  <pre><code>brew list --unbrewed
  </code></pre>
  
  <p>and got a huge list of files (over 59,000). These files are mostly related to python, node, ruby, mongo and mysql. I've also run brew update and brew doctor and neither one of those have any effect on the unbrewed list. </p>
  
  <p>It seems like not such a great idea to keep my installation in this state. So I guess I have several questions about this:</p>
  
  <p>1) Is this something that I should worry about or fix?</p>
  
  <p>2) Where are the unbrewed files kept? (I looked for documentation on this but couldn't find it). Many of these files don't exist at the path shown so where are they?</p>
  
  <p>3) If I did want to clean this up how would I do so? And will I end up removing my installations of these packages/formulas?</p>