[Bug 1784065] Re: package libglib2.0-0 2.48.2-0ubuntu3 failed to install/upgrade: triggers ci file contains unknown directive `interest-await'

[Brian Murray]

This bug report is actually about an upgrade from Ubuntu 14.04 to Ubuntu
16.04 where dpkg is being upgraded from 1.17.5ubuntu5.8. That version of
dpkg does not have support for the "-await" alias variants and dpkg was
updated after libglib2.0-0 so that package upgrade failed. This is
fallout of the changes in bug 1780996. The fix is to make the packages
changed in bug 1780996 pre-depend on dpkg greater than or equal to
1.17.21.

It is also worth investigating the archive for other packages in Ubuntu
16.04 that use "-await" but do not pre-depend on dpkg.

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https://bugs.launchpad.net/bugs/1784065

Title:
  upgrade from 14.04 to 16.04 fails due to `interest-await' in trigger

Status in glib2.0 package in Ubuntu:
  Triaged

Bug description:
  Package failed to install.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: libglib2.0-0 2.48.2-0ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  Date: Fri Jul 27 18:31:08 2018
  DuplicateSignature:
   package:libglib2.0-0:2.48.2-0ubuntu3
   Preparing to unpack .../libglib2.0-0_2.48.2-0ubuntu3_amd64.deb ...
   dpkg: error processing archive /var/cache/apt/archives/libglib2.0-0_2.48.2-0ubuntu3_amd64.deb (--unpack):
    triggers ci file contains unknown directive `interest-await'
  ErrorMessage: triggers ci file contains unknown directive `interest-await'
  InstallationDate: Installed on 2015-03-31 (1213 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.4
   apt  1.2.27
  SourcePackage: glib2.0
  Title: package libglib2.0-0 2.48.2-0ubuntu3 failed to install/upgrade: triggers ci file contains unknown directive `interest-await'
  UpgradeStatus: Upgraded to xenial on 2018-07-27 (0 days ago)

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