Bug#590805: python-debian: Older versions of apt_pkg don't have TagFile

[Jelmer Vernooij]

Hi John,

On Fri, 2010-07-30 at 00:04 -0700, John Wright wrote:
> On Thu, Jul 29, 2010 at 12:51:24PM +0200, Jelmer Vernooij wrote:
> > Package: python-debian
> > Version: 0.1.16ubuntu1
> > Severity: normal
> > 
> > Older versions of apt_pkg don't have a TagFile class, making the
> > python-debian testsuite fail with these versions of apt_pkg. 
> > 
> > Attached patch makes python-debian only use apt_pkg for iterating over 
> > deb822 style paragraphs using apt_pkg if TagFile is present.
> Thanks for the patch!  But...  python-debian actually conflicts with
> python-apt (<< 0.7.94~), since versions before that either don't have
> TagFile or have a broken implementation.  Are you also suggesting
> getting rid of the conflicts given this patch?

> I'm just a bit confused about what problem you're trying to solve,
> because with only this patch, a system with old python-apt could run the
> test suite and build the package, but the resulting package couldn't be
> installed on that system. :)
Ah, I hadn't noticed that. I was just running the tests on an older
(Dapper I think) machine. I'll update the patch. 

FWIW I'm trying to get rid of some of the custom parsing of Debian
control files in Launchpad and using python-debian in Launchpad instead.

Cheers,

Jelmer
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