gw#502: gpu-ci runner fixes — python 3.12 pin + C compiler for triton 3.7 JIT#197
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….7 JIT The dep bump surfaced two runner-environment gaps in the FLUX smoke: - runner bakes python 3.11, which no longer satisfies requires-python>=3.12, so job-time uv downloaded CPython 3.14 (untested); pin --python 3.12 and bake 3.12 in the runner image. - triton 3.7 JIT-compiles launcher stubs at runtime and needs a host cc (same reason the conversion image ships gcc); bake gcc/libc6-dev + a job-time apt fallback for pods booted from the pre-gcc image. test_content_lanes tier flake is PRE-EXISTING (identical failure on the five gpu-ci runs before the bump merge) — not addressed here.
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Post-merge gpu-ci fallout from #195 (the FLUX smoke step):
requires-python>=3.12— job-time uv silently downloaded CPython 3.14. Fix:uv sync --python 3.12+ bake 3.12 in the runner image.RuntimeError: Failed to find C compilerintriton/runtime/build.pyduring generation. Fix: gcc/libc6-dev baked into the runner image + a job-time apt fallback (covers the rebuild race on this same push).NOT addressed:
test_content_lanes::test_lane_swap_moves_only_the_exclusive_module(Tier.VRAM vs RAM) — pre-existing, identical on the five master gpu-ci runs BEFORE the dep bump merged.🤖 Generated with Claude Code