`jupyter lab clean` - something to be utilized?

[consideRatio]

Is using jupyter lab clean something that makes sense to utilize?

I recall seeing it used like RUN jupyter lab build && jupyter lab clean in a Dockerfile.

It sais by using the --help flag of the clean command that...

This will clean the app directory by removing the staging and static directories.

And I also notice how there are statements like the following to be found in the docker-stacks:

docker-stacks/scipy-notebook/Dockerfile

Line 57 in 610bb8b

rm -rf $CONDA_DIR/share/jupyter/lab/staging && \

[parente]

Seems reasonable to switch to clean if it accomplishes the same thing or does better at cleaning up working files. Might be we added the lab extensions before it existed or just didn't know about it.

[consideRatio]

@dhirschfeld wrote this in the gitter chat of jupyterlab btw, I found it to be related and relevant to consider as well. I don't know what differences will come out of it etc though.

@consideRatio - I use docker multi-stage builds, build the extensions in a throwaway container then copy the lab folder into my final image. This has the benefit of ensuring you don't end up with any npm cache stuff in your final image and minimises layers.

[consideRatio]

Related: jupyterlab/jupyterlab#4930

[parente]

Clean all the things!

[romainx]

Hello,

The command has evolve with the new 2.x Jupyterlab version.

Added options for jupyter lab clean to clean specific parts of the build, such as --extensions, --settings, --static, and --all (#7583, #6734)

• https://jupyterlab.readthedocs.io/en/stable/getting_started/changelog.html

We could only use jupyter lab clean to remove the staging since other options will lead to not usable extension.

The staging directory is used to create the build and then populate the static directory.

• https://jupyterlab.readthedocs.io/en/stable/user/extensions.html#staging-and-static

I've tested in the scipy-notebook we are already removing the entire folder so there is nothing more to do.

jovyan@3486515cf88f:~$ jupyter lab clean
[LabCleanApp] Cleaning /opt/conda/share/jupyter/lab...
[LabCleanApp] staging not present, skipping...
[LabCleanApp] Success!

However we could replace the rm by a call to jupyter lab clean, it would be cleaner 😁

- rm -rf $CONDA_DIR/share/jupyter/lab/staging && \
+ jupyter lab clean && \

I've open the PR #1046 with this change.

Best

[romainx]

Hello,

The PR #1046 has just been merged and jupyter lab clean is now used in place of rm.

I'm closing the issue, thank you for the suggestion 😄

Best

[arunkumaralagesan]

is there a way to stop cleaning, as like no-clean to prevent the staging webpack files from overridden, so that custom webpack configs can be added?

[mathbunnyru]

@arunkumaralagesan could you please create a new issue and describe the issue you have?