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

https://github.com/skmpz/void-packages calibre-5.8.1
https://github.com/void-linux/void-packages/pull/27417

calibre: update to 5.8.1.


A patch file from https://github.com/void-linux/void-packages/pull/27417.patch is attached