autocomplete not working with development repository

[holzschu]

Description

When I try to run autocomplete with the development repository, nothing happens. In the JavaScript console, jupyterapp.commands._commands shows that the completer:invoke-* commands are not available. It seems the completer extension was not loaded.

Reproduce

• launch retrolab in binder with the development repository
• create a cell
• type "imp", then tab
• a white tab is inserted in the cell.

Launching retrolab with the current release gives the expected result, the autocomplete menu appears.

Expected behavior

I expected the autocomplete menu to appear.

Context

• Operating System and version: OSX 12.3 and iPadOS 15.4
• Browser and version: Safari 15.4
• JupyterLab version: 4.0.0a22
• Retrolab version: 0.4.0a1

Troubleshoot Output

Command Line Output

Browser Output

[jtpio]

Thanks @holzschu for reporting.

This was noticed in jupyter/notebook#6314 when updating to the latest JupyterLab 4.0 packages.

Some plugins have changed upstream in JupyterLab and can be seen in the diff of jupyter/notebook#6314. For example @jupyterlab/completer-extension:notebooks -> @jupyterlab/notebook-extension:completer.

Probably this is not an issue on the 0.3.x branch in the retrolab repo which still uses the JupyterLab 3.3.x packages.

[jtpio]

@holzschu let's close this since this should now be fixed on the main branch in the notebook repo: https://github.com/jupyter/notebook/

Also development is now happening in https://github.com/jupyter/notebook (#356)