abi3 binding wheel can only be installed for a specific version of python

[houqp]

Please provide the following information:

• Your python version (python -V): Tested with python 3.7 and 3.9
• Your pip version (pip -V): pip 20.2.4 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)
  • If this isn't the latest pip version, have you checked using the latest pip version?
• The version of the bindings you're using, if any (e.g. pyo3, rust-cpython or cffi): pyo3
• Does cargo build work? yes
• If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)? Unix

Please list the exact steps required to reproduce your error with all command output and if possible with a repository:

• use latest master branch to build pyo3 wheel
• produced wheel target/wheels/libname-0.1.0-cp39-abi3-macosx_10_7_x86_64.whl, which works with python 3.9
• try to install wheel with python 3.7: ERROR: libname-0.1.0-cp39-abi3-macosx_10_7_x86_64.whl is not a supported wheel on this platform.
• rename wheel to libname-0.1.0-cp37-abi3-macosx_10_7_x86_64.whl fixes installation issue with python 3.7

Dynamic module contained within the wheel is named without python version: libname/libname.abi3.so. So I am guessing it's safe for us to upload the same wheel with different names for each version of python 3 to pypi?

[konstin]

This depends on PyO3/pyo3#1195 and PyO3/pyo3#1263 being figured out.

[konstin]

Fixed in 0.9.0 🎉