On Thu, Nov 14, 2019 at 06:08:52PM +0100, Miro Hrončok wrote:
> On 09. 10. 19 22:46, Ben Cotton wrote:
> >https://fedoraproject.org/wiki/Changes/Modules_In_Non-Modular_Buildroot
> >
> >Enable module default streams in the buildroot repository for modular
> >and non-modular RPMs.
> >
> >== Summary ==
> >This Change (colloquially referred to as "Ursa Prime") enables the
> >Koji build-system to include the RPM artifacts provided by module
> >default streams in the buildroot when building non-modular (or
> >"traditional") RPMs.
> 
> I have one more technical concern.
> 
> Suppose a packager decides to package the "mycoolapp" software as a
> non-modular package. "mycoolapp" is written in Python, it builds
> again non-modular Python, currently 3.8, it requires "python(abi) =
> 3.8" on runtime.

Hmm, and what about an even simpler case:
"myswankyapp" is also written in Python, and is packaged as a module.
Python is rebuilt in a side tag, then the module blocks the upgrade.
What is supposed to happen in that case?

Zbyszek

> The packager decides to use avocado in %check. Avocado comes from a
> module, it requires "python(abi) = 3.8" as well, because the modular
> package was built with Python 3.8. Avocado is in the bulidroot, so
> everything works.
> 
> The Python maintainers (that includes me) decide to update to Python
> 3.9 in Fedora 33. They request a side tag to do that. They update
> the python3 to 3.9 and they mass rebuild all non-modular Python
> packages in it. "mycoolapp" cannot resolve build dependencies
> because avocado requires "python(abi) = 3.8".
> 
> The Python maintainers need to detect this and figure out what happened.
> Then, the Python maintainers need to either:
> 
>  1. Exclude "mycoolapp" from the rebuild. That is possible until
> dozens of other packages require "mycoolapp".
> 
>  2. Ask the avocado maintainers to rebuild their module in the side
> tag and ask releng to add the side-tag-built module into the
> side-tag buildroot (if it is even possible).
> 
>  3. Modify the spec of "mycoolapp" to temporarily disable %check and
> loose the avocado dependency.
> 
> Or is there some other way?
> 
> -- 
> Miro Hrončok
> --
> Phone: +420777974800
> IRC: mhroncok
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