Re: [PATCH v2] dpkg-base: Remove newly deployed debs from buildchroots

[Jan Kiszka <jan.kiszka@siemens.com>]

On 23.08.20 18:06, Baurzhan Ismagulov wrote:
> Hello Jan,
> 
> On Tue, Aug 11, 2020 at 09:05:59AM +0200, Jan Kiszka wrote:
>> This ensures clean reinstallation after partial rebuilds.
>>
>> A typical error pattern so far was that firmware packages pulled by the
>> buildchroot-target were not updated there on rebuilds, causing the old
>> firmware being deployed into the image.
> 
> With this applied, we encounter random build failures downstream, e.g.:
> 
> 1. ERROR: mc:pixi-cdl100-buster:desktop-shortcuts-1.0-r0 do_install_builddeps: Execution of 'build/tmp/work/debian-buster-armhf/desktop-shortcuts/1.0-r0/temp/run.do_install_builddeps.19582' failed with exit code 1:
>    mk-build-deps: You must have equivs installed to use this program.
>    WARNING: exit code 1 from a shell command.
> 
> 2. Exception: bb.process.ExecutionError: Execution of 'build/tmp/work/debian-buster-armhf/desktop-shortcuts/1.0-r0/temp/run.dpkg_runbuild.16998' failed with exit code 2:
>    dpkg-buildpackage: info: source package desktop-shortcuts
>    dpkg-buildpackage: info: source version 1.0
>    dpkg-buildpackage: info: source distribution UNRELEASED
>    dpkg-buildpackage: info: source changed by isar-users <isar-users@googlegroups.com>
>    dpkg-architecture: warning: specified GNU system type arm-linux-gnueabihf does not match CC system type x86_64-linux-gnu, try setting a correct CC environment variable
>     dpkg-source -I --before-build .
>    dpkg-buildpackage: info: host architecture armhf
>     fakeroot debian/rules clean
>    dh clean
>    make: dh: Command not found
> 
> Seems we have a race, possibly related to removing packages. What I don't
> understand is how it could affect equivs or debhelper -- we don't do anything
> with them. Ideas?

Which packages are you (re-)building? Debian packages? Or just custom
dependencies of that desktop-shortcuts package?

In theory, do_deploy_deb should be locked against do_install_builddeps.
Anything that the latter needs should be available after the former.
Maybe you are missing a build dependency in desktop-shortcuts? Try build
that only over a clean buildchroot, that will tell you.

Jan

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