Replacement of jupyter labextension install

JupyterLab extensions
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Considering the upcoming deprecation of jupyter labextension for installing extension available on registry as well as custom user extensions what are some of the recommended ways I should use to migrate extension installation and make it ready for next major version (5.0)

I have custom labextension that I install for my notebooks and uptil now I am using jupyter labextension install.

I currently don’t want to make that extension public so I am not planning to publish it on registry so any other solution would be really helpful.

Thanks

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Please see: Develop Extensions — JupyterLab 4.3.0 documentation

During development, jupyter labextension develop will take care of most of the things.

Building a “prebuilt” distribution would move this to however the outer jupyterlab environment is installed e.g. pip or conda, usually as a .whl file.

Or, if this really isn’t meant to be treated as software: runtime configuration to find extra extensions after jupyter labextension build.

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