On 02/02/2026 06:33, Marco Atzeri via Cygwin-apps wrote:
On 01/02/2026 22:59, Jon Turney via Cygwin-apps wrote:
On 06/01/2026 11:21, Christoph Reiter via Cygwin-apps wrote:
Not sure if this is the cause here, but maturing defaults to
"cygwin_86_64" because of me since
https://github.com/PyO3/maturin/pull/2819
I suggested on this list some months ago to change sysconfig to match
it like: https://gist.github.com/lazka/c8146c08c0ebe5beb43b6ffb6c2ae51b
so pip stays happy across cygwin DLL updates
Thanks for the link.
I added an extra bit of reporting in the latest version of cygport so
it reports the wheel filename it's choking on:
Installing python-cryptography-46.0.3-1.x86_64
*** Info: installing 3.9
*** ERROR: unknown wheel filename: cryptography-46.0.3-cp312-abi3-
cygwin_86_64.whl
I'm kind of confused where the 'x' in 'x86_64' has gone here?
That seems kind of wrong to me -'86_64' isn't the name of anything.
But I thought anyhow, I should just change cygport to accept that, but
currently, if we try to feed that wheel name into 'pip install', it
fails with:
ERROR: cryptography-46.0.3-cp39-abi3-cygwin_86_64.whl is not a
supported wheel on this platform.
... so I'm not sure what's supposed to be happening here.
It is python rejecting it.
Indeed. With that overly-prescriptive check on the wheel filename
disabled in cygport:
$ cygport python-cryptography.cygport all
Preparing python-cryptography-46.0.3-1.x86_64
Unpacking source cryptography-46.0.3.tar.gz
Preparing working source directory
Compiling python-cryptography-46.0.3-1.x86_64
*** Info: building 3.9
Processing ./.
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status 'done'
Building wheels for collected packages: cryptography
Building wheel for cryptography (pyproject.toml): started
Building wheel for cryptography (pyproject.toml): still running...
Building wheel for cryptography (pyproject.toml): finished with status 'done'
Created wheel for cryptography:
filename=cryptography-46.0.3-cp39-abi3-cygwin_86_64.whl size=2390885
sha256=51a667a083bc830f548621a94028851f397cac050261ffb8c5d5e2feab1223e1
Stored in directory:
/tmp/pip-ephem-wheel-cache-dlflshcs/wheels/b6/b3/32/6fdb21abd3a0326a1c54156f0baaff9082c452761a71694d2a
Successfully built cryptography
[...]
Installing python-cryptography-46.0.3-1.x86_64
*** Info: installing 3.9
ERROR: cryptography-46.0.3-cp39-abi3-cygwin_86_64.whl is not a supported wheel
on this platform.
*** ERROR: pip3.9 install failed
The "not a supported wheel" error comes from 'pip install'.
As Marco notes, you can work around this by renaming the .whl file to
the expected form.
So, I don't quite understand how this works on msys2? Is there some
other change needed elsewhere? Or are we installing wheels the wrong way?
