uv pip install failes for wheel URLs with placeholder

[mil-ad]

I was following the vllm nightly installation guide where they have this one-liner for installing their nightly wheels:

pip install https://vllm-wheels.s3.us-west-2.amazonaws.com/nightly/vllm-1.0.0.dev-cp38-abi3-manylinux1_x86_64.whl

Their documentation specifically says:

The version string in the wheel file name (1.0.0.dev) is just a placeholder to have a unified URL for the wheels. The actual versions of wheels are contained in the wheel metadata.

when using uv pip install I get:

error: Failed to install: vllm-1.0.0.dev0-cp38-abi3-manylinux1_x86_64.whl (vllm==1.0.0.dev0 (from https://vllm-wheels.s3.us-west-2.amazonaws.com/nightly/vllm-1.0.0.dev-cp38-abi3-manylinux1_x86_64.whl))
  Caused by: Wheel version does not match filename: 0.6.3.dev155+gf3a507f1.d20241010 != 1.0.0.dev0

but doing vanilla pip install works.

[charliermarsh]

My initial reaction is that it seems correct to fail here (I'm somewhat surprised this recommend this), and pip's lack of enforcement seems more like a bug than a feature.

[mil-ad]

I think I agree. I hadn't seen this pattern before.

[konstin]

It violates the Python packaging specs (the binary distribution spec requires the version to be in the wheel name), so i consider this a bug in their packaging system - Thanks for filing the upstream bug!