IPython 4.0 involves the "Big Split", which means notebook and qtconsole are no longer ipython, but rather Jupyter parts. As a result, the hyperspy starting scripts no longer work (as they rely on ...
I would like to see IPython (and Jupyterlab) moved down to GCCcore. IPython needlessly depends on matplotlib right now, forcing it to, though that's not a requirement for it at all for the packages ...