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

https://github.com/jnbr/void-packages sigrok
https://github.com/void-linux/void-packages/pull/26198

libsigrokdecode: add patch for python3.9
without, libsigrokdecode does not link against libpython3.9

A patch file from https://github.com/void-linux/void-packages/pull/26198.patch is attached