"Missing formatter" popup installation suggestion fail : typing powershell command in WSL terminal

[playerla]

Environment data

• VS Code version: 1.56.2
• Extension version (available under the Extensions sidebar): v2021.5.842923320
• OS and version: Windows 10
• Python version : 3.8

Expected behaviour

Black suggested installation work

Actual behaviour

Black installation fail :

user@DESKTOP:/mnt/c/Users/user/Downloads/project/myproject$ & C:/Users/user/AppData/Local/Programs/Python/Python38/python.exe c:\Users\user\.vscode\extensions\ms-python.python-2021.5.842923320\pythonFiles\pythonFiles\pyvsc-run-isolated.py pip install -U black--user

I had to run it manually in the right powershell terminal

Steps to reproduce:

• Switch new terminal parameter to "terminal.integrated.defaultProfile.windows": "Debian (WSL)",
• Format a python file without the selected formatter installed
• Click "Yes" to install black from the VSCode suggestion popup

[playerla]

More general issue : #16252

[karthiknadig]

Duplicate of #16175