Execute problem in Windows 32

[Daniel Arribas-Bel]

Hello,

I'm building this environment:

https://github.com/darribas/gds19/blob/master/content/infrastructure/install_gds_stack.yml

And then checking successfull install with this notebook:

https://github.com/darribas/gds19/blob/master/content/infrastructure/check_gds_stack.ipynb

I'm testing this on Appveyor on both 64 and 32 bit Windows:

https://github.com/darribas/gds19/blob/master/appveyor.yml

And here's where the issue comes. Testing on Windows 64 has been on green light for a while now, so no problem there. But testing on 32bit is erroring, apparently calling to a missing file:

https://ci.appveyor.com/project/darribas/gds19/builds/26643854/job/k9cd38yiwsm859r9

My hunch is that it's some kernel compatibility issue, but I've checked and both systems use a `python 3` kernel. I've tried several loose ends and at this point, I have not idea why 32bit is failing. Any pointer or suggestion would be greatly appreciated. Thank you very much in advance.

]d[

[Matthew Seal]

I am guessing this line https://github.com/jupyter/jupyter_client/blob/master/jupyter_client/launcher.py#L84-L85 is causing the kernel command to have an improperly encoded file path or some other bad manipulation of the command string. Another possibility is that the command path is too long for the windows configuration and it's trimming the file path (I've hit this in other situations with Windows testing) to a file that doesn't exist. Long file paths are really awkward in Windows... Either way you likely need to capture or print whatever that cmd argument is before and after being encoded. This might require installing a fork/branch of the jupyter_client with some print statements to capture / reproduce in this situation.

If you do get that all working and wanted to copy over windows testing for nbconvert to the nbconvert repo, it'd be appreciated over there as well :)

Best,

Matt

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