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

https://github.com/jnbr/void-packages mix
https://github.com/void-linux/void-packages/pull/22386

mixxx: add missing dependency speed-devel
without it, the build fails silently
fixes #22376

A patch file from https://github.com/void-linux/void-packages/pull/22386.patch is attached