Installation fails on up-to-date JupyterLab installed with `conda -c conda-forge`

[janpfeifer]

I have a pretty vanilla installation of JupyterLab, and when, following the install instrunctions, I run

conda install -c conda-forge jupyter_contrib_nbextensions

It fails with the following output:

Preparing transaction: done                    
Verifying transaction: done                                                                    
Executing transaction: - Traceback (most recent call last):                                    
  File "/opt/janpf/miniconda3/lib/python3.10/site-packages/jupyter_contrib_core/notebook_compat/nbextensions.py", line 6, in <module>                                                          
    from notebook.extensions import BaseExtensionApp                                                                                                                                           
ModuleNotFoundError: No module named 'notebook.extensions'

During handling of the above exception, another exception occurred:                                                                                                                            
                                                                                                                                                                                               
Traceback (most recent call last):
  File "/opt/janpf/miniconda3/lib/python3.10/site-packages/jupyter_contrib_core/notebook_compat/nbextensions.py", line 10, in <module>
    from notebook.nbextensions import BaseNBExtensionApp                                                                                                                                       
ModuleNotFoundError: No module named 'notebook.nbextensions'
                                                                                               
During handling of the above exception, another exception occurred:
                                                                                               
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/opt/janpf/miniconda3/lib/python3.10/site-packages/jupyter_contrib_core/notebook_compat/nbextensions.py", line 12, in <module>
    from ._compat.nbextensions import BaseNBExtensionApp
  File "/opt/janpf/miniconda3/lib/python3.10/site-packages/jupyter_contrib_core/notebook_compat/_compat/nbextensions.py", line 35, in <module>
    from notebook.nbextensions import (
ModuleNotFoundError: No module named 'notebook.nbextensions'       

...

And so on ...