title: pip install PySide fails
body: <p>I am using both Python 2 and Python 3. I am trying to make <code>pylab</code> variation of <code>ipython</code> work on Python 3 (as it works well enough on Python 2).</p>
  
  <p>After failing to install <code>PyQt4</code>, I have tried installing <code>PySide</code> install, using the following <code>pip</code> command:</p>
  
  <pre><code>sudo pip -vvv install --upgrade pyside
  </code></pre>
  
  <p>It took a while. My computer got fairly hot, also. But after reaching 100%, the installation failed with the following error message:</p>
  
  <pre><code>        Traceback (most recent call last):
            File "&lt;string&gt;", line 1, in &lt;module&gt;
            File "/tmp/pip-build-o8v5e0ej/pyside/setup.py", line 1001, in &lt;module&gt;
              ext_package = 'PySide',
            File "/usr/lib/python3.4/distutils/core.py", line 148, in setup
              dist.run_commands()
            File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
              self.run_command(cmd)
            File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
              cmd_obj.run()
            File "/tmp/pip-build-o8v5e0ej/pyside/setup.py", line 245, in run
              raise RuntimeError("Can't find '%s'" % (filename,))
          RuntimeError: Can't find '/usr/bin/pyside_postinstall.py'
  
          ----------------------------------------
      Cleaning up...
        Removing source in /tmp/pip-build-o8v5e0ej/pyside                                                                                                    [85/929]
      Command "/usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip-build-o8v5e0ej/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__fil
      e__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-1z4uq1n8-record/install-record.txt --single-version-externally-managed --compi
      le" failed with error code 1 in /tmp/pip-build-o8v5e0ej/pyside
      Exception information:
      Traceback (most recent call last):
        File "/usr/local/lib/python3.4/dist-packages/pip/basecommand.py", line 223, in main
          status = self.run(options, args)
        File "/usr/local/lib/python3.4/dist-packages/pip/commands/install.py", line 299, in run
          root=options.root_path,
        File "/usr/local/lib/python3.4/dist-packages/pip/req/req_set.py", line 646, in install
          **kwargs
        File "/usr/local/lib/python3.4/dist-packages/pip/req/req_install.py", line 862, in install
          show_stdout=False,
        File "/usr/local/lib/python3.4/dist-packages/pip/utils/__init__.py", line 732, in call_subprocess
          % (command_desc, proc.returncode, cwd))
      pip.exceptions.InstallationError: Command "/usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip-build-o8v5e0ej/pyside/setup.py';exec(compile(get
      attr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-1z4uq1n8-record/install-record.txt --single-
      version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-o8v5e0ej/pyside
  </code></pre>
  
  <p>So all in all, it did not help me with <code>pylab</code>. Running <code>ipython --pylab</code> raises</p>
  
  <pre><code>ImportError: libpyside.cpython-34m.so.1.2: cannot open shared object file: No such file or directory
  </code></pre>
  
  <p>This is a result of the line</p>
  
  <pre><code>from PySide import QtCore, QtGui, __version__, __version_info__
  </code></pre>
  
  <p>Have I done something wrong?</p>
  
  <hr>
  
  <p>My system info:</p>
  
  <ul>
  <li>Python 3.4.0</li>
  <li>Ubuntu 14.04.3 LTS (trusty)</li>
  <li>Architecture: 64 bit</li>
  <li>Kernel version: 3.16.0-40-generic</li>
  </ul>