New comment by dkwo on void-packages repository

https://github.com/void-linux/void-packages/issues/35341#issuecomment-1027031686

Comment:
From the docs: The application directory can be overridden using the `--app-dir` command-line option in any of the JupyterLab commands, or by setting the `JUPYTERLAB_DIR` environment variable.

Arch wiki suggests to use
`export JUPYTERLAB_DIR=$HOME/.local/share/jupyter/lab`

What is the correct way to encode this into the package?