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

https://github.com/sgn/void-packages libvaladoc-shutup
https://github.com/void-linux/void-packages/pull/27754

libvaladoc: depends on vala explicitly
Otherwise, xbps-install complains about unresolved shlib.

A patch file from https://github.com/void-linux/void-packages/pull/27754.patch is attached