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

https://github.com/jnbr/void-packages gettext
https://github.com/void-linux/void-packages/pull/18721

gettext-devel: add xz to depends
/usr/bin/autopoint uses "tar xf" to extract /usr/share/gettext/archive.dir.tar.xz
if /usr/bin/tar is provided by GNU tar, xz is needed

A patch file from https://github.com/void-linux/void-packages/pull/18721.patch is attached