abi3 wheels with a Python 3.14 floor

Dry ships stable-ABI (abi3-py314) wheels, two per release — win_amd64 and macosx_universal2 — rather than a matrix of one build per Python version. A single wheel then imports on every future CPython, so a new October release needs no action; the previous per-version approach left the library claiming 3.13 support while its own author ran 3.14.

The floor sits at 3.14 rather than 3.11 for two reasons. Modern typing without typing_extensions keeps the zero-dependency promise intact, and PEP 649’s deferred annotations are what make reading a callback’s declared signature at runtime tractable — which is how Dry reports “save_file expects str for path, received number” instead of a raw TypeError from inside the bridge.

Consequences

Users on 3.11–3.13 are excluded, which is most installed CPython today. This is accepted because it is cheap to undo: lowering the floor later is purely additive — a cp311-abi3 wheel serves everyone the current one serves, and breaks nobody.

abi3 does not cover free-threaded builds, so python3.14t cannot install Dry. abi3t (PEP 803) arrives with Python 3.15 and can be published alongside without touching the existing wheel.

The limited API excludes some PyO3 types, PyFunction among them. The replacement — Py<PyAny> plus a callable() check — is wanted anyway, since it accepts functools.partial, objects with __call__, and built-in functions that the old signature rejected.