pub fn toolkit_gap(vendor: GpuVendor) -> Option<ToolkitGap>Expand description
Resolve the toolkit gap for a vendor, None when the headers are
all present — or when the vendor has no known toolkit layout, since
guessing one produces a confidently wrong apt command.
The ROCm root comes from flodl-hw’s resolution (env chain +
convention, runtime-verified) so this check and the loader path
cannot disagree about where ROCm lives.