build: Build Python 3.9 ABI3 wheels.

pywr / pywr-next

An experimental repository exploring ideas for a major revision to Pywr using Rust as a backend.

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build: Build Python 3.9 ABI3 wheels. #175

Closed jetuk closed 1 month ago

jetuk commented 2 months ago

Enable the "abi3-py39" feature in PyO3. This will now build ABI3 compatible wheels for Python 3.9 and above. Doing this reduces the need for separate builds for each Python version, and therefore reduces the number of CI jobs.