[Bug 1719630] Please test proposed package

[Łukasz Zemczak]

Hello Jean-Baptiste, or anyone else affected,

Accepted unattended-upgrades into xenial-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/unattended-upgrades/1.1ubuntu1.18.04.7~16.04.1 in a few hours, and then
in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/1719630

Title:
  unattended-upgrades uses dpkg-vendor but doesn't depend on dpkg-dev

Status in unattended-upgrades package in Ubuntu:
  Fix Released
Status in unattended-upgrades source package in Xenial:
  Fix Committed
Status in unattended-upgrades source package in Artful:
  Fix Released

Bug description:
  [Impact]

   * Unattended-upgrades may fail to install due to missing dpkg-vendor command.
   * The fix is using lsb_release which is provided by dependencies.

  [Test Case]

   * Install unattended-upgrades, then check the maintainer scripts to not have reference to dpkg-dev:
  $ grep dpkg-dev /var/lib/dpkg/info/unattended-upgrades.* ; echo $?
  1

  [Regression Potential]

   * lsb_release may fail but that would be a different, bigger issue affecting many other programs. This is unlikely.
   * Changed maintainer scripts may fail due to errors introduced with the fix. Since those scripts had extensive testing in later releases by now it looks like unlikely to occur, too.

  [Original Bug Text]

  in its postinst script unattended-upgrade uses dpkg-vendor from dpkg-
  dev but does not depends on dpkg-dev which results in the following
  error:

  # apt-get update && apt-get upgrade

  Installing the packages goes well, except for, getting this warning.

  Setting up unattended-upgrades (0.97ubuntu1) ...
  /var/lib/dpkg/info/unattended-upgrades.postinst: 65:
  /var/lib/dpkg/info/unattended-upgrades.postinst: dpkg-vendor: not found
  /var/lib/dpkg/info/unattended-upgrades.postinst: 66:
  /var/lib/dpkg/info/unattended-upgrades.postinst: dpkg-vendor: not found
  /var/lib/dpkg/info/unattended-upgrades.postinst: 124:
  /var/lib/dpkg/info/unattended-upgrades.postinst: dpkg-vendor: not found
  /var/lib/dpkg/info/unattended-upgrades.postinst: 125:
  /var/lib/dpkg/info/unattended-upgrades.postinst: dpkg-vendor: not found

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: unattended-upgrades 0.97ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
  Uname: Linux 4.13.0-11-generic x86_64
  ApportVersion: 2.20.7-0ubuntu1
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Sep 26 10:01:05 2017
  InstallationDate: Installed on 2013-09-03 (1483 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902)
  PackageArchitecture: all
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: unattended-upgrades
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.apt.apt.conf.d.50unattended-upgrades: [modified]
  mtime.conffile..etc.apt.apt.conf.d.50unattended-upgrades: 2017-09-05T01:34:04.573213

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