Getting ERROR: File "setup.py" or "setup.cfg" not found. Directory cannot be installed in editable mode: /tmp despite removing requirements.txt

Version/Environment (if relevant):

This issue uncommonly occurs after an upgrade to Domino 5.3.1.

Issue:

Sometimes a new workspace doesn't startup due to the following error:
"ERROR: File "setup.py" or "setup.cfg" not found. Directory cannot be installed in editable mode: /tmp"

This is usually resolved by deleting the requirements.txt from the main of the Git repository. However, in this scenario, this doesn't resolve the issue. This results in the workspace not starting, and the error appears again.

Root Cause:

The root cause is currently unknown, as there are very specific circumstances where this scenario can occur. We are currently investigating it at this time.

Resolution:

Change the volume size of the workspace as shown here to a different size than what is currently configured:

https://docs.dominodatalab.com/en/latest/user_guide/0ea71e/change-your-workspace-s-volume-size/

You can start a new workspace after this has been done.