There's a closed pull request on the void-packages repository

MangoHud: upload revision that depends on libXnvctrl to support Nvidia cards
https://github.com/void-linux/void-packages/pull/44051

Description:
Set MangoHud to depend on libXnvctrl to fix Nvidia detection. This fixes a bug in the normal Void Linux package as is currently, where Nvidia GPUs aren't read at all, even if you force the Nvidia lspci number.  This is due to a lack of needed development files that libXnvctrl contains, so here I made this package dependent on that package and changed the settings to make it use the library in compilation.

That said this may mean the package may end up being x86_64 only as I didn't test a i386 version or other arches. Worst comes to worst, could it be possible then there would be a Nvidia version of this package?

EDIT: and oh yeah the CI will fail for this pull req as it requires #44050 to work.

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