Bug#1090228: gobject-introspection: FTBFS: dpkg-checkbuilddeps: error: Unmet build dependencies: python3-markdown:native

[Johannes Schauer Marin Rodrigues]

Hi,

Quoting Santiago Vila (2024-12-16 22:21:44)
> El 16/12/24 a las 20:41, Santiago Vila escribió:
> > I'll try again with sbuild 0.88.1 and see what happens.
> 
> Ok, tried again with 0.88.1 and it fails in the same way.
> 
> If it's a bug in sbuild, it would be one that has not been reported before.
> 
> I'm Cc:ing josch in case he can look at this and tell us what he thinks.
> 
> (the strange thing is that the same version used to build ok in trixie
> last time, so something has changed and I don't know what it could be)

eight days ago, the upload of python-markdown 3.7-2 switched it to
Multi-Arch:foreign. Packages that are M-A:foreign are not supposed to satisfy
dependencies annotated with :native according to dpkg. See also the second
point in this section of the crossbuild guidelines:

https://wiki.debian.org/CrossBuildPackagingGuidelines#Avoid_the_.27:native.27_qualifier_if_possible

Luckily it seems that gobject-introspection is the only source package which
annotated python3-markdown with :native so there does not seem to be more
fallout from this change in python-markdown 3.7-2.

In an earlier mail to #1090228, Simon McVittie already identified what I wrote
above as the cause for this FTBFS. I'm just echoing it here in a bit more
verbose way.

> I see there is a changelog entry in sbuild which may be related to this:
> 
>    [ Johannes Schauer Marin Rodrigues ]
>    * lib/Sbuild/ResolverBase.pm: disable the sbuild-cross-resolver without
>      apt-utils in the chroot

This is completely unrelated to this problem because the sbuild-cross-resolver
is only ever going to get used when cross-building.

> the strange thing is that the same version used to build ok in trixie
> last time, so something has changed and I don't know what it could be

What changed is python-markdown as Simon noticed already.

And I agree with Simon that the correct fix is to change the Build-Depends on
python-markdown:native and remove the :native qualifier.

Thanks!

cheers, josch
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