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

https://github.com/Hyper-KVM/void-packages nvidia-vulkan
https://github.com/void-linux/void-packages/pull/20582

New package: nvidia-vulkan-440.66.08
The linux5.6 patch needs to be updated for linux5.6.2, but otherwise the drivers work fine on older kernels.

A patch file from https://github.com/void-linux/void-packages/pull/20582.patch is attached