Thomas Kluyver

To clarify, Fernando and I were just talking to Brett in person, and asked him to open this issue. While there might be workarounds for any specific case, that's a...

I wouldn't quite say I'm _eager_, but I will look into it ;-)

Yep, loading it as directly as possible into the docutils representation would clearly be ideal.

I suspect from the traceback that the pytest version is a red herring. I think nbval is clashing with another pytest plugin you have installed - `dash/testing/plugin.py` .

I think the default should probably be to skip or xfail the remainder of the notebook - as you say, once one cell has failed, running the rest of the...

For checking mpl plots, Jess Hamrick wrote a tool called [plotchecker](https://github.com/jhamrick/plotchecker). That needs access to the mpl plot object, which is tricky since that exists in the kernel process, not...

The "Kernel died before replying to kernel info" error looks like there's a problem with the Jupyter set up you're using.

It will need `jupyter_client` to test with, but I think you'd get a different error if that wasn't installed. Do you have a kernelspec set up? Can you check what...

What do you get from `jupyter kernelspec list`?

If you remove those (in particular the python3 one), does it work? I don't think nbval is affected by nb_conda_kernels.