Create new notebook fails, opening existing notebook does not work (Proposed API error).

Environment data

• VS Code version: 1.61.0
• Jupyter Extension version: v2021.9.100
• Python Extension version: v2021.10.1365161279
• OS and version: Manjaro 21.1.6
• Python and/or Anaconda version: 3.9.4
• Type of virtual environment used: conda
• Jupyter server running: Local

Expected behaviour

A clean install of vscode and the respective extensions should create and open jupyter notebooks properly.

Actual behaviour

• Opening an existing jupyter notebook enables to create and edit cells, but there is no possibility to execute them.
• Jupyter: Create New Jupyter Notebook shows error: command 'jupyter.createnewnotebook' not found, nothing more happens.

In both situations, the developer tools console prints the following error:

[ms-python.python]: Proposed API is only available when running out of dev or with the following command line switch: --enable-proposed-api ms-python.python

See trace in screenshot below.

Steps to reproduce:

For my configuration, the following steps did not resolve the error:

1. uninstall vscode
2. clear data in ~/.config/Code - OSS/ and ~/.vscode/
3. install vscode
4. install python and jupyter extension, select proper python interpreter
5. try to create a new notebook using Jupyter: Create New Jupyter Notebook or open an existing notebook

Error screenshot

[Moarqi]

@IanMatthewHuff ah, that totally makes sense! Thank you for your investigation and time, that is something I could have found 😕

I managed to resolve the issue by adding "ms-toolsai.jupyter" to "extensionAllowedProposedApi": [..] in /usr/lib/code/product.json as suggested. Closing the issue.

[IanMatthewHuff]

Hmmm interesting. I don’t have access to an Arch Linux machine right now, but I’m checking out the docs online. I was a bit confused that there were Code - OSS directories that were listed as those directories are not usually in the official VS Code releases.

Looking around I believe that I see the answer here. It looks like ArchLinux by default installs Code - OSS (which is not the official Microsoft release, but should function normally).

https://wiki.archlinux.org/title/Visual_Studio_Code

The actual official Microsoft release looks like it’s visual-studio-code-bin not code. Looking further into the link above it looks like the “Command Not Found” issue is a known issue with Code - OSS, as Code - OSS doesn’t recognize specific extensions that are allowed to use the proposed API in stable builds. This sounds exactly like the symptoms that you are seeing. I think that the advice would be to add in those extensions (probably Python and Jupyter here) as detailed as here from the above link:

Command "..." not found
In the official build of VS Code, a product.json file lists the extensions that are allowed to use certain proposed APIs accessed by extensions. However, the product.json is absent in the OSS build code. [1]

In the related issues below, some flags may be required to enable certain APIs. [2] You may either run code with these flags, or you can add the relevant entries to the extensionAllowedProposedApi section in the product.json file (code installs this to /usr/lib/code/product.json).

"extensionAllowedProposedApi": [
    "ms-vsliveshare.vsliveshare",
    "ms-vscode.node-debug",
    "ms-vscode.node-debug2"
]
This can also be resolved by installing the code-featuresAUR package, which installs a pacman hook that patches the file on every package update. Alternatively, you may also consider installing the Microsoft branded packages: visual-studio-code-binAUR, visual-studio-code-insiders-binAUR.

Or to install the official Microsoft release of vs code instead of Code - OSS.