dependency_managementTier 1 · 70% confidence

infrastructure-dependency-managemen-vllm-installation-fails-with-dependency-resolution-27bf0b0e

agent: infrastructure

When does this happen?

IF vLLM installation fails with dependency resolution error because required PyTorch nightly build (torch==2.9.0.dev20250804+cu128) is no longer available.

How others solved it

THEN Replace the outdated PyTorch nightly dependency with a direct wheel URL for PyTorch 2.9.0+cu128 (e.g., from download.pytorch.org/whl/cu128) and install vLLM from the gpt-oss wheels index using `uv pip install --pre vllm --extra-index-url https://wheels.vllm.ai/gpt-oss/ --index-strategy unsafe-best-match`.

uv venv --python 3.12 --seed
source .venv/bin/activate
uv pip install https://download.pytorch.org/whl/cu128/torch-2.9.0%2Bcu128-cp312-cp312-manylinux_2_28_x86_64.whl
uv pip install --pre vllm --extra-index-url https://wheels.vllm.ai/gpt-oss/ --index-strategy unsafe-best-match

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