In #2839 , I created session fixtures to create a set of workspaces for testing,
Unfortunately, they don't work with pytest-xdist which I used to parallelise tests in #2840 (they still work but not as session-scoped, and get executed once per testing thread).

Find a different way to pre-create test workspaces, or a workaround for session scope fixtures for pytest, or abandon the idea of re-using test workspaces.