On 30/12/2025 11:49, Marco Atzeri via Cygwin-apps wrote:
Hi Mantainers,

using the SCALLYWAG build of rust

$ rustc --version
rustc 1.91.0 (f8297e351 2025-10-28) (built from a source tarball)

I was able to compile the latest versions of

     python-bcrypt
     python-cryptography

that I uploded as TEST.

The build dependency on RUST is currently disabled to avoid complaint
during the upload.

While "python-bcrypt" was relative straightward with minor trick to set RUSTFLAGS for the right version of python

---------------------------------------------------------
BASE_PYTHON_WHEEL_VERSIONS=${PYTHON_WHEEL_VERSIONS}

src_compile() {
         cd ${S}
         lndirs
         cd ${B}
         for v in ${BASE_PYTHON_WHEEL_VERSIONS//:/ }
         do
                 export RUSTFLAGS=" -lpython${v}"
                 PYTHON_WHEEL_VERSIONS="${v}"
                 inform "building ${v}"
                 python_wheel_compile
         done
         PYTHON_WHEEL_VERSIONS=${BASE_PYTHON_WHEEL_VERSIONS}

Huh. Interesting.

I guess that just means that something in the guts of the build doesn't realize that -lpythonNN is needed on cygwin (to complete undefined references in the library built).

}
---------------------------------------------------------

"python-cryptography" needed an additional package
as the wheel files were NOT in a suitable format

./dist/cryptography-46.0.3-cp312-abi3-cygwin_86_64.whl
./dist/cryptography-46.0.3-cp39-abi3-cygwin_86_64.whl

after installing the "python-maturin" packages the wheel files
were correctly built

./dist/cryptography-46.0.3-cp312-abi3-cygwin_3_6_5_x86_64.whl
./dist/cryptography-46.0.3-cp39-abi3-cygwin_3_6_5_x86_64.whl

Hmm... coincidentally, I was recently looking at this logic [1] which recognizes .whl filenames

I'm not sure if the matching there is just ad-hoc, or what it means when python chooses to include the 'uname -r' ("kernel version") in the wheel filename.

[1] https://cygwin.com/cgit/cygwin-apps/cygport/tree/cygclass/python-wheel.cygclass#n193

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