title: xkbcommon: ERROR: failed to add default include path
body: <p>Whenever I start a python script that tries to access the keyboard, for example, with OpenCV's waitKey() method, I get the following error:</p>
  
  <pre><code>Qt: Failed to create XKB context!
  Use QT_XKB_CONFIG_ROOT environmental variable to provide an additional search path, add ':' as separator to provide several search paths and/or make sure that XKB configuration data directory contains recent enough contents, to update please see http://cgit.freedesktop.org/xkeyboard-config/ .
  </code></pre>
  
  <p>This error started to appear when I installed the keyboard library (or pynput, I am not quite sure) and persisted after I uninstalled them. I do not have QT installed. 
  Also, neither OpenCV's waitKey nor the two installed libraries can detect any key events (I suspect this is connected), which was already the case before I got the error though.</p>
  
  <p>I am running on Ubuntu 18.04.</p>
  
  <p>How can I go about this problem?</p>