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

https://github.com/Vaelatern/void-packages d2
https://github.com/void-linux/void-packages/pull/40716

New package: d2-0.1.0
here for musl fix

A patch file from https://github.com/void-linux/void-packages/pull/40716.patch is attached