Hi Thomas,
I am the author of both doit and pytest-incremental.
Not really maintaining pytest-incremental anymore, *maybe* it still works with the latest pytest version.
If you are interested you could give it a try and we push a new release. actually doit needs a release for some time already too.
I kind of decided to build something like pytest-incremental but on top plain unittest without using pytest.
But surprise surprise, no time to work on that... if you are interested we can have a chat about it.
Regards