CI system cryptic error

[Hamish McIntyre-Bhatty]

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