title: How to install Mayavi Trait backends?
body: <p><strong>OS:</strong> Linux Kubuntu 14.4.5</p>
  
  <p><strong>Python:</strong> Python 3.5.2 :: Continuum Analytics, Inc.</p>
  
  <hr>
  
  <p>I tried to install Mayavi into my anaconda environment:</p>
  
  <pre><code>conda install -c menpo mayavi=4.5.0
  conda install -c anaconda wxpython=3.0.0.0
  conda install pyqt
  conda install qt
  </code></pre>
  
  <p>But when I try to run the example from <a href="http://docs.enthought.com/mayavi/mayavi/auto/example_surface_from_irregular_data.html" rel="noreferrer">http://docs.enthought.com/mayavi/mayavi/auto/example_surface_from_irregular_data.html</a> I get the error message</p>
  
  <pre><code>ImportError: Could not import backend for traits
  </code></pre>
  
  <p>with the explanation:</p>
  
  <blockquote>
    <p>Make sure that you have either the TraitsBackendWx or the
    TraitsBackendQt projects installed. If you installed Mayavi with
    easy_install, try easy_install . easy_install Mayavi[app]
    will also work.</p>
    
    <p>If you performed a source checkout, be sure to run 'python setup.py
    install' in Traits, TraitsGUI, and the Traits backend of your choice.</p>
    
    <p>Also make sure that either wxPython or PyQT is installed. wxPython:
    <a href="http://www.wxpython.org/" rel="noreferrer">http://www.wxpython.org/</a> PyQT:
    <a href="http://www.riverbankcomputing.co.uk/software/pyqt/intro" rel="noreferrer">http://www.riverbankcomputing.co.uk/software/pyqt/intro</a></p>
  </blockquote>
  
  <p>I searched the web and tried to find anything to setup, but couldn't find anything.</p>
  
  <p>From <a href="http://docs.enthought.com/mayavi/mayavi/installation.html?highlight=installation" rel="noreferrer">http://docs.enthought.com/mayavi/mayavi/installation.html?highlight=installation</a> I got that I could install it via pip with <code>pip install mayavi</code>, but that resulted only in the messages that "Requirement already satisfied", among which is</p>
  
  <blockquote>
    <p>Requirement already satisfied: traits in /anaconda2/envs/myenv/lib/python3.5/site-packages (from mayavi)</p>
  </blockquote>
  
  <p>What to do?</p>