Minimum package requirements to run a jupyter notebook in vscode

Recently I keep running into problems with my python notebooks in vscode where vscode doesn't see the installed ipykernel. There are several posts on this issue with suggestions to update certain packages (VSCode not picking up ipykernel, Python requires ipykernel to be installed, vscode not detecting ipykernel, verified it is actually installed, Install ipykernel in vscode - ipynb (Jupyter), ...)

This makes me wonder what the actual minimum requirements are. Different "offical" channels mention different dependencies:

• https://code.visualstudio.com/docs/datascience/jupyter-notebooks#_setting-up-your-environment mentions jupyter
• https://github.com/microsoft/vscode-jupyter/wiki/Jupyter-Kernels-and-the-Jupyter-Extension#python-environments mentions ipython and ipykernel
• https://github.com/microsoft/vscode-jupyter/wiki/Installing-Jupyter mentions jupyter may be required.

Previously I only had

ipykernel
notebook

installed in the conda environment which worked just fine.

So what are the actual requirements to run jupyter notebooks in vscode? What are the needed packages with versions?

The minimum requirement according to the ticket https://github.com/microsoft/vscode-jupyter/issues/14130 is

ipykernel

The jupyter package is only required when asked to install. It has to do with native zmq modules not working on the platform.