[Bug 1085844] Re: update-manager uses subprocess.Popen incorrectly when calling dpkg

[Steve Kowalik]

I didn't save any, sadly. It should be fairly easy to test -- include a
package that calls exit 1 in its postinst during an distribution upgrade
ran by update-manager, and you should hit that block.

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Title:
  update-manager uses subprocess.Popen incorrectly when calling dpkg

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  While upgrading a machine from Precise to Quantal, I had the upgrade
  bomb out at the end with initramfs-tools postinst exiting 1. This was
  handled nicely, in my opinion, with update-manager explaining the
  issue and saying it will run 'dpkg --configure -a'. However, when it
  does this, it does not give the full path to subprocess.Popen(), so
  Python gives a few tracebacks with "dpkg: no such file or directory"

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