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

https://github.com/desowyrm/void-packages swaylock-effects-branch
https://github.com/void-linux/void-packages/pull/27971

New package: swaylock-effects-1.6_3
Swaylock-effects is a fork of swaylock. It adds upon swaylock with fancy effects such a blurring.

A patch file from https://github.com/void-linux/void-packages/pull/27971.patch is attached