resource.yml.j2 renders `runtime: nvidia` for any service that declares
`gpu: true`, gated a second time on the host carrying /dev/nvidia0 so a
CPU-only host never gets a runtime its daemon cannot resolve. The device
fact is probed in daemon_config.yml next to the kata and gVisor shims, and
daemon.json.j2 lists nvidia alongside them. nvidia stays out of
SANDBOX_RUNTIME: it passes a device through, it does not isolate.
nvidia.yml drops rival apt sources for libnvidia-container before writing
its own. The other order leaves two sources with different Signed-By keys
for one URL, which makes apt refuse the entire source list.
test_gpu_runtime.py covers both polarities and the missing device fact; the
latter caught `x.stat.exists | default(false)`, which raises on the
undefined object before the filter runs.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5