data.tar.xz support added to Launchpad

[Steve Langasek]

On Tue, Oct 25, 2011 at 04:15:06PM -0400, Barry Warsaw wrote:
> However, when the buildd got to that point, it failed:

> https://launchpadlibrarian.net/83677349/buildlog_ubuntu-precise-amd64.m2crypto_0.21.1-2ubuntu1_BUILDING.txt.gz

I think you probably mean this error:

chroot-autobuild/build/buildd/python-m2crypto_0.21.1-2ubuntu1_amd64.deb:
dpkg-deb: file `chroot-autobuild/build/buildd/python-m2crypto_0.21.1-2ubuntu1_amd64.deb' contains ununderstood data member data.tar.xz     , giving up

(had to search on 'xz' to find the error in the build logs)

This is not part of the package build per se, but is part of extra
inspection the buildds do of the package after it's built in order to put
useful information into the build logs.  This part runs using the dpkg-deb
from outside the build chroot, and outside the build chroot we're not
running precise - we're running lucid.  So you're going to get this error in
the build log of any package that uses .xz, whether or not you add the
Pre-Depends, and should ignore it.

As Micah says, the error we need to care about is not a build-time error at
all; it's the archive check that blocks the *upload* of a package that
doesn't pass muster.  So there's nothing wrong with your sbuild setup that
you aren't seeing this locally.

> Any idea why it succeeded in sbuild, and do you have any other suggestions
> for testing such package builds locally before uploading?

Fine-toothed-combing of the merge delta, and, when all else fails, that's
what the archive check is there for.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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