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

https://github.com/skmpz/void-packages calibre-5.4.2
https://github.com/void-linux/void-packages/pull/26001

calibre: update to 5.4.2.


A patch file from https://github.com/void-linux/void-packages/pull/26001.patch is attached