There is an updated pull request by zdykstra against master on the void-packages repository

https://github.com/zdykstra/void-packages zfs-2.1.2
https://github.com/void-linux/void-packages/pull/34563

zfs: update to 2.1.2.
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A patch file from https://github.com/void-linux/void-packages/pull/34563.patch is attached