Re: [PATCH] buildchroot: Perform upgrade after build dependency installation

[Henning Schild <henning.schild@siemens.com>]

Am Tue, 22 Jan 2019 19:19:58 +0100
schrieb Jan Kiszka <jan.kiszka@web.de>:

> On 22.01.19 18:08, Henning Schild wrote:
> > Am Tue, 22 Jan 2019 17:22:14 +0100
> > schrieb Jan Kiszka <jan.kiszka@web.de>:
> >  
> >> From: Jan Kiszka <jan.kiszka@siemens.com>
> >>
> >> When we partially rebuild after updating the version of a build
> >> dependency of another package, we do not properly upgrade that
> >> dependency in buildchroot. The reason is that "apt-get install"
> >> performs upgrades only for the explicitly listed packages. But we
> >> install build dependencies indirectly, we a meta package's
> >> dependency.
> >>
> >> Resolve that be running an explicit "apt-get upgrade" after the
> >> build dependency installation. This will ensure pulling the latest
> >> versions for isar-apt.  
> >
> > I am not sure i fully understand the problem given your description,
> > but i get the idea.
> >
> > The mk-build-deps calls an apt-get that will not do anything even if
> > builddep-0.1 has to be updated to builddep-0.2? Maybe you can
> > address  
> 
> If you refer with "builddep" to the meta package that mk-build-dep is
> generating
> - no, it's one of the indirect dependencies it refers to. Concrete
> case: kernel update, and kernel-headers will not be upgraded, thus
> the module built against the wrong kernel.

No i am talking about the package at the lower end. We have A -> B ->
C0 + C1 + C2. A is the one we want to build, B is the artificial
package, and Cxx are the ones on the "lower end". 

> > the problem with the "-t" argument of mk-build-dep?  
> 
> I've tried various switched to apt-get install, but it just reported
> to not do the identified upgrades. I would prefer a magic switch as
> well, so I'm all ears which one we may miss.

Did the debian version string change to something greater? If not it
should probably increase.
Another option would be to "apt-get remove" a packages from all
buildchroots on its clean, unless it was explicitly installed.

But i guess what you came up with is fine as well, and less
complicated.

Henning 

> Jan