The --nvidia path had no automated coverage and regresses easily (silent
32/64-bit collisions, dropped files), and GPU CI runners to exercise it
don't exist. This harness needs no GPU: it installs the nvidia driver in a
throwaway VM, runs `distrobox create --nvidia` against ubuntu/fedora/arch
guests, and checks every file the host package manager ships is mirrored in
with a matching checksum and resolvable deps. The package manifest is the
source of truth, so any gap fails loudly instead of silently.
Signed-off-by: Luca Di Maio <luca.dimaio1@gmail.com>
Luca Di Maio