title: Incorrect check of SIP version during PyQt installation
body: <p>I have been trying to install PyQt on my mac (OSX 10.6.8), but I still having this problem:</p>
  
  <p>When I try to install PyQt-mac-gpl-4.9.6, I get this </p>
  
  <pre><code>Error: This version of PyQt requires SIP v4.14.2 or later.
  </code></pre>
  
  <p>The weird thing is that when I want to check for sip version on the console and write </p>
  
  <pre><code>sip -V
  </code></pre>
  
  <p>,I get the correct version: 4.14.2</p>
  
  <p>I have checked my PATH but non of the online tips that I have found have helped me. How do I fix this?</p>