There is an updated pull request by ericonr against master on the void-packages repository

https://github.com/ericonr/void-packages sndio
https://github.com/void-linux/void-packages/pull/23838

Use sndio as first preference in PortAudio, enable PortAudio for spotifyd
If sndio isn't available, spotifyd, using the portaudio backend, falls back to ALSA cleanly. However, in the previous version, with sndio enabled, the portaudio backend simply didn't output anything. Therefore, I believe my change to the patch makes sense.

Enabling portaudio for spotifyd makes sense because it allows one to use sndio without requiring alsa-sndio.

@Johnnynator and @abenson 

A patch file from https://github.com/void-linux/void-packages/pull/23838.patch is attached