no reply from IPython kernel

[naught101]

I'm running:

Python 3.4.3 |Continuum Analytics, Inc.| (default, Jun  4 2015, 15:29:08) 
Type "copyright", "credits" or "license" for more information.

IPython 4.1.0-dev -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

After running ipython kernel in one shell, and then runnning :IPython --existing has stopped working in the last day or so (:IPython --existing kernel-<id>.json also doesn't work).

I think the only thing that's really changed is that I upgrade to IPython 4/Jupyter. Is it possible the API has broken vim-ipython? I have the latest version from git from just now.

[naught101]

Hrm.. no, never mind. I forgot that it was using the system version of ipython, and not the conda env version...

I assume there is no way to use the conda env version, is that right? Could there be?