Tests are failing

[adamltyson]

See https://github.com/brainglobe/cellfinder-napari/actions/runs/5312974479. Something to do with multiprocessing.

[alessandrofelder]

Initial investigation suggests to me that we are spawning a multiprocessing thread pool with 0 processes on the GH actions runs 🤔 The GH actions runners have two cores, and I suspect for the failing test

• 1 core is taken up by cellfinder_napari
• cellfinder_core needs at least two cores to run successfully due to this line

This has the consequence that we pass 0 as the number of processes to the multiprocessing.Pool constructor, which raises the Value error.

[alessandrofelder]

This should therefore be fixed in cellfinder_core I think, make a new release of it, and then pin cellfinder-napari to the latest release.

[willGraham01]

@alessandrofelder This can be closed now with the cellfinder-core fix right? Tests are passing on main both here and in cellfinder-core.