I have been attempting to migrate a custom labextension which adds a new option to the help tab in the JupyterLab interface that worked before in jupyterlab=2. On its own, the labextension works properly in jupyterlab=3 and I see it functioning in the help tab and with jupyter labextension list (ima…

`Error: No provider for: jupyter.extensions.jupyterWidgetRegistry` after locally installing a custom labextension

jasongrout April 12, 2021, 5:46pm 13

And just following up, it looks like you’ve found the issue tracking this at Jupyterlab3 support · Issue #367 · maartenbreddels/ipyvolume · GitHub

Topic		Replies	Views
[Lab v3] No provider for: jupyter.extensions.jupyterWidgetRegistry JupyterLab help-wanted	11	3292	February 19, 2021
No provider for: jupyter.extensions.jupyterWidgetRegistry with ipycytoscape JupyterLab	1	717	January 5, 2022
Migration to v4 : No provider for: @jupyterlab/apputils:IThemeManager extensions help-wanted	2	291	December 4, 2023
Issue creating extension with bundlers -- no provider for other extensions extensions how-to , help-wanted	2	592	June 1, 2022
Optional dependency for JupyterLab extension extensions	2	287	September 22, 2023