pytest discovery hanging

[agbaum]

Lately test discovery in multiple workspaces has been hanging. The python output includes pytest's discovery output (the list of tests), but nothing after that.
If I try to restart discovery, I get: [error] Test discovery already in progress, not starting a new one.

Vscode is updated the latest version, I've uninstalled and reinstalled the python extension. I've restarted my computer. It's happening in multiple workspaces.

All of my tests run successfully when run in a terminal, as does pytest with the --collect-only flag

I don't even know how to begin figuring out what's wrong. Anyone have any ideas?