CI system cryptic error

[Hamish McIntyre-Bhatty]

On 22/01/2022 05:34, Marco Atzeri wrote:
> On 21.01.2022 17:03, Hamish McIntyre-Bhatty wrote:
>> On 21/01/2022 14:06, Jon Turney wrote:
>>> On 20/01/2022 15:50, Hamish McIntyre-Bhatty wrote:
>>>> Hi there,
>>>>
>>>> Recently, I created a test package for python-imaging, and the CI 
>>>> system gave a build error that I didn't see locally:
>>>>
>>>> *** ERROR: unknown wheel filename.
>>>>
>>>> This only occurred for the Python 3.8 build (3.6 and 3.7 are 
>>>> unaffected). Considering some of the library name changes between 
>>>> these versions, is it possible that this is a bug in the CI tool 
>>>> setup or in cygport?
>>>
>>> Weird.
>>>
>>> I assume it's this job: 
>>> https://github.com/cygwin/scallywag/actions/runs/1592256829
>>
>> Yep, sorry I forgot to add the link.
>>
>>>
>>> In which case further note it only failed with this error on i686, 
>>> x86_64 seems to have built ok.  That might explain why you don't see 
>>> it locally, at least, but it's still puzzling that there's a difference.
>>
>> No I did a local i686 build too, and it was fine...
>>
>>>
>>> This error comes from here:
>>>
>>> https://cygwin.com/git/?p=cygwin-apps/cygport.git;a=blob;f=cygclass/python-wheel.cygclass;h=90b0faac71eea6005401b4232e5b334bdc81b756;hb=HEAD#l190 
>>>
>>>
>>> and means something more like "couldn't find the wheel file for 
>>> python $ver"
>>>
>>> I downloaded the builddir archive, and inspecting that it seems that 
>>> a wheel for python3.8 (and 3.9!) isn't being generated.
>>>
>>>> $ tar -tf builddir.tar.xz | grep whl
>>>> python-imaging-8.4.0-1.i686/build/dist/Pillow-8.4.0-cp36-cp36m-cygwin_3_3_3_i686.whl 
>>>>
>>>> python-imaging-8.4.0-1.i686/build/dist/Pillow-8.4.0-cp37-cp37m-cygwin_3_3_3_i686.whl 
>>>>
>>>
>>> There seems to be completely different output between x86_64 and i686 
>>> when building the python wheel, but I have no idea why!
>>>
>>
>> Hmm, very strange. Maybe just a freak error? I'll try building again, 
>> seeing as I have a new version now anyway, and see what happens. I 
>> guess seeing as 64-bit builds are the future for Cygwin, I'll just 
>> ignore this issue if it happens again, as long as I check the 32-bit 
>> builds I built work.
>>
>> Hamish
>>
> 
> I saw something similar but I do not remember the details.
> 
> Cygport is looking for something that has changed name or it is not 
> available anymore. Probably the old name is still used by Python2 and
> it is the reason why the error seldom show up in local build of
> maintainers.
> 
> cygport --debug should provide some hints

Good idea, I'll try that, and I'll also remove python 2 from my cygwin 
install if I can.

Cheers,

Hamish