IPyKernel not detected as Conda environment is not loading

[claudiaregio]

Environment data

• VS Code version: 1.58
• Jupyter Extension version: v2021.8.1013163132
• Python Extension version: v2021.6.944021595
• Pylance Extension version: v2021.7.2

Steps to reproduce:

1. Follow instructions here https://github.com/holoviz/holoviz/blob/master/doc/installation.rst but replace "anaconda-project run jupyter notebook" command with "anaconda-project run", followed by "code ."
2. Open "Setup" notebook
3. Change Python interpreter to the provided holoviz one
4. Reload to resolve diagnostics
5. Reload again and select corresponding kernel to holoviz env
6. Try to run first code cell
7. Get modal message prompting to install ipykernel, select install

Expected behavior

For ipykernel to install and be able to run cells

Actual behavior

Stuck in endless loop of being told to install ipykernel when trying to run cell

**Edit: I checked in through Conda CLI that ipykernel is actually installed here, yet I am stuck in the endless loop because it appears not to be finding it.

[DonJayamanne]

@claudiaregio Please could you try this again & upload the logs from Jupyter output panel.
FYI - it works for me.

[rdillinger]

This just started for me today - everything worked fine yesterday, no changes, didn't even close my code down, went to run today and getting message that ipykernel is not installed or needs updated.

[DonJayamanne]

@rdillinger Sorry to hear that, Please could you create a new issue with the details requestd in the issue template.

[rdillinger]

Hi, yes, happy to, can you remind me what steps I need to take to get the complete log output? The main jupyter error I'm getting is that it is trying to exec an import ipykernel and failing (this either wasn't happening yesterday or wasn't failing yesterday).

Info 2021-07-23 14:50:54: Process Execution: > ~\anaconda3\python.exe -c "import ipykernel"

~\anaconda3\python.exe -c "import ipykernel"
Info 2021-07-23 14:50:54: Process Execution: > ~\anaconda3\python.exe -c "import ipykernel"
~\anaconda3\python.exe -c "import ipykernel"
Error 2021-07-23 14:50:59: Install Missing Dependencies, Class name = w, completed in 11234ms, has a falsy return value, Return Value: undefined [a [Error]: IPyKernel not installed into interpreter Python 3.7.3 64-bit ('anaconda3': conda):C:\Users\dillinra\anaconda3\python.exe
at w.handleKernelDependencyResponse (c:\Users\dillinra.vscode\extensions\ms-toolsai.jupyter-2021.8.1054968649\out\client\extension.js:90:246461)
at w.installMissingDependencies (c:\Users\dillinra.vscode\extensions\ms-toolsai.jupyter-2021.8.1054968649\out\client\extension.js:90:245644)
at runMicrotasks ()
at processTicksAndRejections (internal/process/task_queues.js:93:5)] {
category: 'noipykernel',
reason: 1
}
Error 2021-07-23 14:50:59: Raw session failed to start because dependencies not installed
Info 2021-07-23 14:50:59: Shutdown session -- complete

[DonJayamanne]

@rdillinger

• What version of Jupyter extension do you have now?
• Please could you roll back to the previous version of the Jupyter extension & try it out

[rdillinger]

@DonJayamanne - I just tried every extension back 5 months. Extensions prior to one month ago results in a complete "cannot launch notebook" error. Extension versions within the last month all (now) are resulting in the same kernel error and log results.

This was generated with Jupyter version 2021.6.999406279.

Info 2021-07-23 16:12:21: Starting raw kernel Python 3.7.3 64-bit ('anaconda3': conda)
Info 2021-07-23 16:12:21: installMissingDependencies C:\Users\dillinra\anaconda3\python.exe
Info 2021-07-23 16:12:29: Cached data exists getEnvironmentVariables,
Info 2021-07-23 16:12:30: Process Execution: > ~\anaconda3\python.exe -c "import ipykernel"

~\anaconda3\python.exe -c "import ipykernel"
Info 2021-07-23 16:12:30: Process Execution: > ~\anaconda3\python.exe -c "import ipykernel"
~\anaconda3\python.exe -c "import ipykernel"
Error 2021-07-23 16:12:36: Install Missing Dependencies, Class name = w, completed in 14749ms, has a falsy return value, Return Value: undefined [a [Error]: IPyKernel not installed into interpreter Python 3.7.3 64-bit ('anaconda3': conda):C:\Users\dillinra\anaconda3\python.exe
at w.handleKernelDependencyResponse (c:\Users\dillinra.vscode\extensions\ms-toolsai.jupyter-2021.6.999406279\out\client\extension.js:90:244702)
at w.installMissingDependencies (c:\Users\dillinra.vscode\extensions\ms-toolsai.jupyter-2021.6.999406279\out\client\extension.js:90:244075)
at runMicrotasks ()
at processTicksAndRejections (internal/process/task_queues.js:93:5)] {
category: 'noipykernel',
reason: 1
}
Error 2021-07-23 16:12:36: Raw session failed to start because dependencies not installed
Info 2021-07-23 16:12:36: Shutdown session -- complete

[DonJayamanne]

@rdillinger
So it doesn't work in any version of Jupyter. Hence I dont think its a regression at our end.
Please could you do me a favor, please ensure you have

• the latest version of the Jupyter extesnion.
• The insider version of python extension (install Python extnsion & go into command palette & select Python Switch to Daily Insiders, wait for it to get installed & when promped restart VS Code)

Next Replicate the issue & then:

• Please instal
• Copy all of the output from the Jupyter output panel, and upload that here.
• Screenshot of VSCode (I'd like to see the Kernel selected, on the top right)./
• Provide the following information:
  • Are you using the base conda environment or a specific conda environment
• Try the following in a terminal
  • Activate the conda environment you are using in the notebook
  • Run the following code
  • python -c 'import ipykernel;print(ipykernel.__version__)'
  • Let me what you get

[rdillinger]

Hi, Yes.

I will be back in a moment with the log after using the most current extension version.

[rdillinger]

JupyterError Output Log.txt

This is with Jupyter most recent extension version, Python most recent extension version

Provide the following information:

• Are you using the base conda environment or a specific conda environment - I have the python path specified (same path I was using yesterday).
• Activate the conda environment you are using in the notebook - when I try to run conda activate conda in terminal, it gives me an error message about conda not being a recognized command
• Run the following code - python -c 'import ipykernel;print(ipykernel.version)'. Let me what you get - I ran this, I received no error message, but also, no output.

[rdillinger]

The main thing is that everything has worked very well for months, then today it just stopped - I hadn't run any package upgrades, version upgrades, and I hadn't even closed my code. I just walked away from computer, and when I came back, I was getting the error message in the screenshot above.

After troubleshooting today, I'm not sure if the logs would be identical to ones I would have seen when this message first appeared, but I appreciate your help!