Lavapipe is CPU rendering, it doesn't really prove much. But also, Vulkan on BSDs is totally possible and isn't something esoteric, FreeBSD has it.

> Build goal only: This targets compilation and linkage of the Vulkan stack. Runtime GPU acceleration is not available under VirtualBox; the software driver (Lavapipe) is the target.

I don't understand why this would ever be a problem, even without LLM assistance it's something that sounds like a weekend project?