[Pkg-utopia-maintainers] Bug#876743: flatpak: FTBFS on hppa: Creating new namespace failed: Invalid argument

[Simon McVittie]

On Mon, 25 Sep 2017 at 22:00:51 +0200, Helge Deller wrote:
> We have stability problems with latest debian kernels.
> That's why I've compiled a 4.9.50 (stable series) kernel and run it now
> on our buildds.
> Flatpack did built successfully in the past:
>  https://buildd.debian.org/status/logs.php?pkg=flatpak&arch=hppa
> So, I think in general there are no problems with flatpak on hppa.

Either that, or the build-time tests that would have indicated a problem
were skipped because the buildd environment didn't allow them to run
(which in fact they seem to have been in for example
<https://buildd.debian.org/status/fetch.php?pkg=flatpak&arch=hppa&ver=0.9.12-1&stamp=1505576496&raw=0>,
which is functionally the same code as the failing 0.9.12-2 - so we can't
actually know whether flatpak works on hppa or on the majority of Debian
architectures until someone tries it).

Unfortunately, we can't rely on either buildds or autopkgtest having
an environment where container technologies like bubblewrap can be
tested meaningfully, and autopkgtests are only run for a couple of
architectures (and certainly not non-release architectures like hppa).

> I plan to rebuild a new 4.9.50 kernel with all kernel namespace features
> enabled soon, and then I can give-back flatpak.
> Maybe it will succeed then?

Either enable all the namespace features that Debian does, or disable
enough namespaces that bwrap just can't run. Both extremes are fine,
it's the middle that has caused this FTFBS :-)

Regards,
    smcv