title: Installing PyQt5 from sources: Unable to import PyQt5.sip
body: <p>I'm trying to build PyQt5 from the sources. I'm running fedora 28 and I installed Qt5 via <code>dnf</code>. Installing Sip following <a href="http://pyqt.sourceforge.net/Docs/sip4/installation.html" rel="nofollow noreferrer">this</a> seems OK. But when i try to configure PyQt i got this error:</p>
  
  <pre><code># python3 configure.py -q /usr/bin/qmake-qt5
  Querying qmake about your Qt installation...
  Error: Unable to import PyQt5.sip. Make sure you have configured SIP to
  create a private copy of the sip module.
  </code></pre>
  
  <p>According to the <a href="http://pyqt.sourceforge.net/Docs/sip4/using.html#ref-private-sip" rel="nofollow noreferrer">doc</a> I did:</p>
  
  <pre><code># python3 configure.py --sip-module private.sip
  # python3 configure.py -q /usr/bin/qmake-qt5 -n private.sip
  </code></pre>
  
  <p>But i still get the error. So I'm guessing I'm not using it properly. Any suggestions ?</p>
  
  <p><strong>P.S:</strong> I know (and i did) that it can be done via <code>pip</code> but i'm facing the same problem than <a href="https://stackoverflow.com/questions/39201227/how-to-change-style-in-qt5qt/39202315">here</a></p>