PyPI has shipped aarch64 abi3 wheels for every vLLM release since 0.17,
so the arm64 skip rested on a stale premise. With torch held at 2.10.0
the resolver lands on vllm 0.19.1 (the release pinning torch==2.10.0)
on both arches; verified by cross-resolving the exact index set for
aarch64-unknown-linux-gnu.
amd64 keeps fail-loud semantics. arm64 is fail-soft because the aarch64
wheels are newer and their GPU kernels get validated on Spark hardware
via docker_confirm.sh rather than in CI; on failure the fallback
uninstalls vllm and restores the numpy/numba floor so a partial install
cannot break import unsloth (numpy 2.2.6 ships a broken numpy.testing).
The install steps form an explicit && chain instead of a set -e
subshell: POSIX shells disable errexit inside condition contexts
(verified on dash), so a (set -e; ...) condition would mask failures.
Both confirm scripts gain a 5b vLLM phase: ok on import, bad if missing
on x86_64, warn on other arches where fast_inference=True is best-effort.
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