Conda installs ipyvolume 0.6.0a6 when no version is specified - but "jupyter labextension update --all" downgrades the lab extension to 0.5.2

[owenlamont]

I've noticed conda always installs the latest 0.6 alpha including the lab extension but running "jupyter labextension update --all" - as I frequently do - will downgrade the labextension from v0.6.0-alpha.5 to v0.5.2.

I would've preferred only the latest stable ipyvolume to be installed if no version is specified - assuming version 0.5.2 is expected to work okay. I'm not clear from the documentation whether jupyter lab 2 is supported or not... I haven't had any luck getting ipyvolume to render there but I've had no issues in classic jupyter notebooks.

[pratulyab]

I got it working for JupyterLab 2.1.4 by installing pre-release ipyvolume (0.6.0 alpha.6) for python and installing bqplot for python and labextension.

[owenlamont]

Thanks for the tip. I will test again in a new environment. I still don't know how to stop jupyter labextension update from downgrading the labextension though or why the conda-forge recipe is installing a pre-release version.