What if we excluded 32bit ARM from Python 3.12

[Miro Hrončok]

Hello Pythonistas,

we are probably going to package python3.12 soon for all Fedora releases.

Unfortunately, building Python for 32bit ARM has been very tedious lately, as 
the Koji build keeps restarting and the build takes 24+ hours to finish.

Considering 32bit ARM is gone from Fedora 37+, I was considering the 
ExcludeArch it from the python3.12 package even on older Fedoras, to make the 
builds easier.

Would anybody be sad about that?

[Petr Viktorin]

Makes sense. It's a new package. I see nothing wrong with excluding it, 
to see what breaks & who complains.

On 13. 10. 22 11:07, Miro Hrončok wrote:
> Hello Pythonistas,
>
> we are probably going to package python3.12 soon for all Fedora releases.
>
> Unfortunately, building Python for 32bit ARM has been very tedious 
> lately, as the Koji build keeps restarting and the build takes 24+ hours 
> to finish.
>
> Considering 32bit ARM is gone from Fedora 37+, I was considering the 
> ExcludeArch it from the python3.12 package even on older Fedoras, to 
> make the builds easier.
>
> Would anybody be sad about that?

[Victor Stinner]

Which kind of computers and hardware use 32-bit ARM these days?

Raspberry Pi Zero 2 (2021), Raspberry Pi 3 (2018), Raspberry Pi 4
(2019) use 64-bit ARM, whereas older Raspberry Pi 1 (2012), Raspberry
Pi 2 (2015) and Raspberry Pi Zero (2015) use 32-bit ARM.

Victor

On Thu, Oct 13, 2022 at 11:08 AM Miro Hrončok  wrote:
> Hello Pythonistas,
>
> we are probably going to package python3.12 soon for all Fedora releases.
>
> Unfortunately, building Python for 32bit ARM has been very tedious lately, as
> the Koji build keeps restarting and the build takes 24+ hours to finish.
>
> Considering 32bit ARM is gone from Fedora 37+, I was considering the
> ExcludeArch it from the python3.12 package even on older Fedoras, to make the
> builds easier.
>
> Would anybody be sad about that?
>
> --
> Miro Hrončok
> --
> Phone: [phone]
> IRC: mhroncok
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[Sandro]

On 13-10-2022 11:07, Miro Hrončok wrote:
> Considering 32bit ARM is gone from Fedora 37+, I was considering the
> ExcludeArch it from the python3.12 package even on older Fedoras, to make the
> builds easier.
>
> Would anybody be sad about that?

Not at all.

While I still have a RPi 3 running on armv7l, it will be upgraded to 
aarch64 eventually and I don't expect anything to break by not having 
Python3.12 available for it.

-- Sandro

[Neal Gompa]

On Thu, Oct 13, 2022 at 5:08 AM Miro Hrončok  wrote:
> Hello Pythonistas,
>
> we are probably going to package python3.12 soon for all Fedora releases.
>
> Unfortunately, building Python for 32bit ARM has been very tedious lately, as
> the Koji build keeps restarting and the build takes 24+ hours to finish.
>
> Considering 32bit ARM is gone from Fedora 37+, I was considering the
> ExcludeArch it from the python3.12 package even on older Fedoras, to make the
> builds easier.
>
> Would anybody be sad about that?

I'm fine with it. The less ARM in my life, the better.

[Sandro]

On 13-10-2022 19:22, Neal Gompa wrote:
> > Would anybody be sad about that?
>
> I'm fine with it. The less ARM in my life, the better.

I feel ya. ;-P

ARM: https://en.wikipedia.org/wiki/Association_of_Radical_Midwives

[Miro Hrončok]

On 13. 10. 22 11:07, Miro Hrončok wrote:
> Unfortunately, building Python for 32bit ARM has been very tedious lately, as 
> the Koji build keeps restarting and the build takes 24+ hours to finish.

For example, the 3.10.8 update for Fedora 35 was built on ARM in nearly 58 hours:

https://koji.fedoraproject.org/koji/taskinfo?taskID=92962390

The Fedora 36 build is still running for 59+ hours:

https://koji.fedoraproject.org/koji/taskinfo?taskID=92962389

Other architectures finished within 1 hour, mostly in around 35 minutes.