Why not toplevel?

I think the rationale is to implement a poor man's lazy policy ;)

I have a little trouble reading that.

Can you explicit what the entrypoint.load() returns...

... plugging brain cables...

Nevermind, i think i grokked it:

• entrypoint.load() returns the function registered in the setup.py. For example, you dubbed it swh.lister.*.__init__.register in the other diff.
• and then you call it, to actually access the dict the register function returns

Ok.

Maybe this would be more readable?

for ...:
    worker_register_fn = entrypoint.load()
    CONFIG['task_modules'].append(worker_register_fn()['tasks])

It's a test fixture, it will always run if that file is imported

heh, sounds about right indeed.

a more explicit version is fine for me, will do

Why not toplevel?

Why toplevel?

Because imports should always be at the toplevel unless there's a reason not to.