Support xz compression inside debs

The package appears to have unrelated changes to data/templates/Debian.mirrors and data/templates/Ubuntu.mirrors.

If they are unintentional, please drop them and re-upload. If they're intentional please document them in the changelog :).

For the record, this is part of infrastructure work required to land this Launchpad change:

  https://code.launchpad.net/~cjwatson/launchpad/dpkg-xz-support-619152/+merge/32868

The package has changes to the mirror lists because those lists are automatically generated at build-time. More precisely, they are generated in a pre-build script and updates are not checked into bzr normally.

Hello Michael, or anyone else affected,

Accepted python-apt into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

This doesn't work on its own. Unfortunately we also need revision 1327.95.5 from apt, otherwise I get:

  SystemError: "E:This is not a valid DEB archive, it has no 'data.tar.gz', 'data.tar.bz2' or 'data.tar.lzma' member"

Thanks Colin for the testing. I merged your fix for the missing bits in python-apt now. The reason its missing is that its in the 0.7 API compat code. With the 0.8 API the filelist is more pythonic:

    def test_xz_data(self):
        deb = apt.debfile.DebPackage("./data/test_debs/data-tar-xz.deb")
        self.assertEqual(deb.filelist, ["./", "usr/", "usr/bin/"])

But of course LP uses the 0.7 API so this patch needs to be added. I uploaded a new version now to lucid-proposed and will do the required apt bit as well.

Hello Michael, or anyone else affected,

Accepted python-apt into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Hello Michael, or anyone else affected,

Accepted apt into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

I've tested that the tests of my dpkg-xz-support Launchpad branch now pass with these apt-utils and python-apt packages installed. I've also tested a routine dist-upgrade of 58 packages, with no problems.

(To clarify, I've only run the archiveuploader LP tests, but those were the only ones I touched.)

This bug was fixed in the package apt - 0.7.25.3ubuntu9.6

---------------
apt (0.7.25.3ubuntu9.6) lucid-proposed; urgency=low

  * backport support for xz compression (LP: #805389)
 -- Michael Vogt <email address hidden> Wed, 13 Jul 2011 11:57:22 +0200

This bug was fixed in the package python-apt - 0.7.94.2ubuntu6.4

---------------
python-apt (0.7.94.2ubuntu6.4) lucid-proposed; urgency=low

  * add missing bits for the xz compression support, thanks
    to Colin Watson for the fix! (LP: #805389)
 -- Michael Vogt <email address hidden> Wed, 13 Jul 2011 10:57:21 +0200

Thanks for this. Any idea when I would be able to make an upload using xz compression? Are the Soyuz machine updated daily, or does someone from Canonical need to file a RT ticket?

There's slightly more to it than that, and it'll involve some changes to
the Launchpad PPA. I'm working on it and will update this bug when you
can upload. Rest assured that I am on top of it.