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

https://github.com/ndowens/void-packages termtosvg
https://github.com/void-linux/void-packages/pull/17914

New Package: python3-termtosvg-1.0.0


A patch file from https://github.com/void-linux/void-packages/pull/17914.patch is attached