Configure Jupyter Cache location?

[JavadocMD]

Description

Is it possible to configure the location used for Jupyter Cache files? The current behavior (Quarto v1.6.40) appears to be to create .jupyter-cache folders at the same level as the qmd files being rendered, which results in the cache folders being scattered through the hierarchy of the project. I would like to centralize these so that there's just one .jupyter-cache folder at the root of the project. (Easier to manage this way. My ultimate goal is to easily store these in a GitHub Actions cache.)

Reading the Jupyter Cache doc, they seem to provide an environment variable (JUPYTERCACHE) that would allow me to specify a location. However when I set this variable and run quarto render the observed behavior is unchanged.

[mcanouil]

Could you provide a Git repository with a simple setup showing this and how setting JUPYTERCACHE does not work?

[JavadocMD]

Happy to: https://github.com/JavadocMD/quarto-jupyter-cache-issue-repro-20250218

[cderv]

I believe this is a feature request to Quarto as I see we hard-coded the cache name

quarto-cli/src/resources/jupyter/notebook.py

Line 125 in ec8cd58

nb_cache = get_cache(".jupyter_cache")

This may be for some reason, but unsure about that. I believe this was just because .jupyter-cache is the default.

So this needs to be adapted so that default path is used. Too bad that the Python API does not seem to have a get_cache() using computed default cache
https://jupyter-cache.readthedocs.io/en/latest/using/api.html#initialisation

So possibly we just need to check for JUPYTERCACHE env var directly

[cderv]

• jupyter, cache - Respect JUPYTERCACHE environment variable #12123

[JavadocMD]

Sounds great, thanks for looking into this!