There is a new pull request by dkwo against master on the void-packages repository

https://github.com/dkwo/void-packages master
https://github.com/void-linux/void-packages/pull/24424

isl: update to 0.22.1
I edited the template, the corresponding soname and revbumped all involved.
It builds clean on my machine.
I'm not sure how to include vlicense() for MIT.
This is my first pull request, I hope I didn't mess anything up.

A patch file from https://github.com/void-linux/void-packages/pull/24424.patch is attached