Error on installing IPython for Python 3: sys_platform == "darwin" and platform_python_implementation == "CPython"
<p>I want to install IPython for Python3 using </p>

<p><code>sudo pip install ipython</code></p>

<p>on openSUSE 13.1. Since I have pip only installed for Python3 it should work and in fact works for other packages. I get the follwoing error:</p>

<pre><code>Downloading/unpacking ipython
  Downloading ipython-4.1.2.tar.gz (5.0MB): 5.0MB downloaded
  Running setup.py egg_info for package ipython
    error in ipython setup command: Invalid environment marker: sys_platform == "darwin" and platform_python_implementation == "CPython"
    Complete output from command python setup.py egg_info:
    error in ipython setup command: Invalid environment marker: sys_platform == "darwin" and platform_python_implementation == "CPython"
</code></pre>

<p>Interestingly, IPython works, but starts with Python 2.7.6 after installation via YaST. What is going wrong?</p>