Re: Cross-building for older releases on trixie broken?

["'Jan Kiszka' via isar-users" <isar-users@googlegroups.com>]

On 19.09.25 10:23, Uladzimir Bely wrote:
> On Thu, 2025-09-18 at 07:49 +0200, 'Jan Kiszka' via isar-users wrote:
>> Hi,
>>
>> for some days, I'm playing with a trixie-based kas container
>> (currently
>> available via kas-isar:next from upstream), and I it seems I ran into
>> an
>> issue that might be isar-related: Building e.g. qemu-arm64:bookworm
>> with
>> that container fails:
>>
>>> Setup apt archive
>>> -----------------
>>>
>>> Merged Build-Depends: debhelper-compat (= 13), build-
>>> essential:amd64,
>> crossbuild-essential-arm64:amd64, apt-utils:amd64, libc-dev:arm64,
>> libstdc++-dev:arm64
>>> Filtered Build-Depends: debhelper-compat (= 13),
>> build-essential:amd64, crossbuild-essential-arm64:amd64,
>> apt-utils:amd64, libc-dev:arm64, libstdc++-dev:arm64
>>> dpkg-deb: building package 'sbuild-build-depends-main-dummy' in
>> '/build/sshd-regen-keys-QAjoa6/resolver-ruuPrM/apt_archive/sbuild-
>> build-depends-main-dummy.deb'.
>>> Ign:1 copy:/build/sshd-regen-keys-QAjoa6/resolver-
>>> ruuPrM/apt_archive
>> ./ InRelease
>>> Get:2 copy:/build/sshd-regen-keys-QAjoa6/resolver-
>>> ruuPrM/apt_archive
>> ./ Release [609 B]
>>> Ign:3 copy:/build/sshd-regen-keys-QAjoa6/resolver-
>>> ruuPrM/apt_archive
>> ./ Release.gpg
>>> Get:4 copy:/build/sshd-regen-keys-QAjoa6/resolver-
>>> ruuPrM/apt_archive
>> ./ Sources [690 B]
>>> Get:5 copy:/build/sshd-regen-keys-QAjoa6/resolver-
>>> ruuPrM/apt_archive
>> ./ Packages [733 B]
>>> Fetched 2032 B in 0s (0 B/s)
>>> Reading package lists...
>>> Reading package lists...
>>>
>>> Install main build dependencies (apt-based resolver)
>>> ----------------------------------------------------
>>>
>>> Installing build dependencies
>>> Reading package lists...
>>> Building dependency tree...
>>> Reading state information...
>>> E: Unable to locate package sbuild-build-depends-main-dummy
>>> apt-get failed.
>>> E: Package installation failed
>>> Not removing build depends: cloned chroot in use
>>> Reading package lists...
>>> Building dependency tree...
>>> Reading state information...
>>> E: Unable to locate package sbuild-build-depends-main-dummy
>>> apt-get failed.
>>>
>>
>> That was part of the sshd-regen-keys package build, but all package
>> seem
>> to fail this way.
>>
>> I suspect we are improperly using the host dpkg tooling here, rather
>> than that from the target distro (see other recent discussions we had
>> here)...
>>
>> Jan
>>
>> -- 
>> Siemens AG, Foundational Technologies
>> Linux Expert Center
> 
> Hello, Jan.
> 
> I took a quick look at this. It seems cross-building is broken for
> trixie host only for bookworm target. Buster, bullseye and trixie
> targets looks OK.
> 

Hmm, maybe we are lucky with the other ones, but the same issue applies
in principle.

> The reason is still not clear for me - some failure happens with
> apt/dependencies, even before dpkg-buildpackage is called.
> 
> Will try to debug.
> 

Thanks in advance!

Jan

-- 
Siemens AG, Foundational Technologies
Linux Expert Center

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