They are similar (e.g. see references to Idris in [1]). One of the key differences, I think, is that Hazel programs can evaluate around typed holes, see [2] for an example of that!
(cc @neurocy.bsky.social and @disconcision.com)

[1] arxiv.org/pdf/1805.00155
[2] hazel.org/build/dev/?n...

h/t to @anil.recoil.org for the hazoo name

I stand by it :)

Yep! I believe there is support for saving the state of the cells locally in the works too which would be a good feature!

It was pretty frustrating come up mostly short on a solution for io-uring that was reliable and that would remain stable across kernel versions. Any pointers there would be appreciated :)

This has additional support for tracking subprocesses and io-uring which bypasses the common syscall tracepoints.