Re: New Blocker Criterion Proposal: Same default packages for all arches

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>> For a little background, yesterday we had a very long discussion of a
>> bug[1] during the blocker bug meeting. The quick overview of that bug is
>> that Firefox failed to build on some non-x86 architectures, so the
>> package maintainer opted to stop building Firefox on anything but i686
>> and x86_64. This had the cascading effect of causing the alternative
>> architecture composes to fail (including ARM/XFCE).
>>
>> During that meeting, I argued that the specific firefox bug didn't
>> violate any criteria and that we should create a new bug[2] and mark
>> that one as a blocker. However, I think I argued my contradicting
>> example a bit too well and it was misconstrued that I was suggesting
>> that we drop Firefox on alternative architectures and call that a
>> solution. My point was mostly that I wanted us blocking on a bug that
>> described the failed criteria, not dictating a specific solution.
>>
>> I went digging through the criteria to try to find something that I
>> could cite to get the Firefox issue back onto the blocker list (because
>> on reflection *do* think it's extremely serious and I've considered
>> taking it to FESCo for their override). However, it seems that our
>> blocker criteria do not describe one institutional guideline that we've
>> been trying to follow: that alternative architectures should be
>> delivering the same content as the "primary" architectures.
>>
>> What I would like to propose (wordsmithing welcome) is an addendum to
>> the Beta criteria under the Installer->Default Package Set requirements:
>>
>> "The default package set installed from blocking media must be the same
>> on all architectures for that Edition, Spin or netinstall except for
>> packages whose sole purpose is hardware enablement for one or more
>> architectures."
>>
>> Breaking it down, I think we should have an explicit criterion that
>> installing the default package set for e.g. XFCE spin on armv7 must be
>> the same set of packages you would get in a default install of e.g. XFCE
>> spin on x86_64. If there are specific examples of where there are known
>> (non-hardware-enablement) packages for which this is impossible, I'd
>> suggest adding a clause like "FESCo will maintain a list of packages
>> exempt from this requirement".
>>
>> So I'd like for us to consider including this requirement for F26 Beta
>> (though I realize time is a little short on that score). If Fedora QA
>> feels that it's too late for us to add this criterion, I'll take the
>> specific matter of the Firefox builds to FESCo. I do think we should set
>> a precedent here and document it for the future.
>>
>>
>>
>> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1443938
>> [2] https://bugzilla.redhat.com/show_bug.cgi?id=1448923
>>
>>
>
> I don't really understand this, and I haven't read the meeting log, so I
> apologize if my questions are dumb.
>
> Why would we dictate that Editions/Spins can't use different software on
> different architectures? It might make perfect sense to use browser X on
> x86_64 because it's very good, but use browser Y on i386 because of memory
> limitations of i386 arch (browser Y needing much less memory than browser

You can't guarantee memory on any device, you should have a consistent
experience in terms of applications not perceived possible issues such
as memory. EG you could easily have a Power64 or aarch64 device that's
faster than x86)64 with more memory.

> X). Similarly, if shell A no longer supports i386, why would be ban it from
> being preinstalled on x86_64? i386 would have shell B instead. Those are
> random examples, but it seems to me that they can be completely valid. If
> there's such requirement that Editions/Spins can't install different
> software on different arches, I think that should be established by FESCo,
> not us.
>
> For this particular Firefox example, what is the core problem that you're
> trying to fix here? Is it the fact that Firefox excluded many arches from
> builds? From my QA POV, since it excluded arm, it's a blocker, since arm is

Well it causes most of the world to fail to compose on numerous
architectures. EG Workstation on both ARMv7 and aarch64 is very usable
and accelerated on a number of devices but now completely fails to
compose, Firefox is the default browser there.

> primary. If it hadn't excluded arm, it would not be a blocker, and alternate
> arches would need to find a way (fix the bug or use a different browser). If
> you still think this should not happen, you could ask FESCo to present some
> rules saying when Fedora packagers can exclude other arches from the build
> and when they can't. We could then enforce that (instead of prohibiting
> different package sets).
>
>
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