There is a new pull request by q66 against master on the void-packages repository

https://github.com/void-ppc/void-packages micropython
https://github.com/void-linux/void-packages/pull/16116

micropython: broken on ppc*
Could be fixed in next release, but too much code to backport to make fixing it right now worthwhile.

A patch file from https://github.com/void-linux/void-packages/pull/16116.patch is attached