maturin producing cp38 wheel names when abi3 requested

[wjones127]

Bug Description

Our CI started failing when maturin action version took in CLI change from 1.12.4 to 1.12.6.

In 1.12.4, the output wheel name was:

lancedb-0.30.0b2-cp39-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

This matches our flags in Cargo.toml:

pyo3 = { version = "0.26", features = ["extension-module", "abi3-py39"] }

But in 1.12.6, the output wheel name was:

lancedb-0.30.0b3-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

This didn't make sense given our flags. It also caused our CI to fail on pip install with:

lancedb-0.30.0b3-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl is not a supported wheel on this platform.

Run with 1.12.4: https://github.com/lancedb/lancedb/actions/runs/22504662757/job/65200245658
Run with 1.12.6: https://github.com/lancedb/lancedb/actions/runs/22582226908/job/65417251835

I think this is the same issue as encountered here: YDX-2147483647/hayagriva-gb-tracking#13

Your maturin version (maturin --version)

1.12.6

Your Python version (python -V)

Python 3.13.12

Your pip version (pip -V)

na

What bindings you're using

pyo3

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

I have not yet created a minimal reproduction, but can do so if needed.