[Bug 1646739] Re: package php7.0-xml 7.0.13-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

[Nish Aravamudan]

For those who filed bugs I just duped here, there seems to be an
underlying issue with update-manager invoking aptdaemon which in turn
seems to think it needs to call a maintscript (although it doesn't
necessarily) which then errors out.

Using cli tools instead, this does not occur.

This is not specific to php7.0 at all, but is something seen across many
packages always involving update-manager.

I have seen at least a few historic bugs (supposedly fixed) and am still
doing archaeology to see if something maybe was dropped: LP: #804250,
LP: #779970, LP: #845367.

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https://bugs.launchpad.net/bugs/1646739

Title:
  package php7.0-xml 7.0.13-0ubuntu0.16.04.1 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 128

Status in debconf package in Ubuntu:
  Confirmed
Status in php7.0 package in Ubuntu:
  Confirmed
Status in update-manager package in Ubuntu:
  Confirmed

Bug description:
  During a software upgrade, process was stuck on php7.0-xml
  configuration for 20 minutes, after that I killed the process. I am
  not sure what additional info are required, will be happy to provide
  any.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: php7.0-xml 7.0.13-0ubuntu0.16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-49.70-generic 4.4.30
  Uname: Linux 4.4.0-49-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.2
  Architecture: amd64
  Date: Fri Dec  2 09:52:06 2016
  ErrorMessage: subprocess installed post-installation script returned error exit status 128
  InstallationDate: Installed on 2016-03-11 (265 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.1
   apt  1.2.15
  SourcePackage: php7.0
  Title: package php7.0-xml 7.0.13-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128
  UpgradeStatus: Upgraded to xenial on 2016-05-07 (209 days ago)

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