[Bug 1679435] Re: GNOME Software fails to install .deb packages that trigger debconf prompts

[Robert Ancell]

** Summary changed:

- installing dkms package from gnome-software, no debconf frontend: package shim-signed 1.27~16.10.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
+ GNOME Software fails to install .deb packages that trigger debconf prompts

** No longer affects: shim-signed (Ubuntu)

** Also affects: gnome-software (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Also affects: gnome-software (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: gnome-software (Ubuntu Artful)
   Importance: High
     Assignee: Robert Ancell (robert-ancell)
       Status: Fix Committed

** Also affects: gnome-software (Ubuntu Zesty)
   Importance: Undecided
       Status: New

** Changed in: gnome-software (Ubuntu Zesty)
   Importance: Undecided => High

** Changed in: gnome-software (Ubuntu Yakkety)
   Importance: Undecided => High

** Changed in: gnome-software (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: gnome-software (Ubuntu Zesty)
       Status: New => Triaged

** Changed in: gnome-software (Ubuntu Yakkety)
       Status: New => Triaged

** Changed in: gnome-software (Ubuntu Xenial)
       Status: New => Triaged

** Changed in: gnome-software (Ubuntu Zesty)
       Status: Triaged => Fix Committed

** Changed in: gnome-software (Ubuntu Zesty)
     Assignee: (unassigned) => Robert Ancell (robert-ancell)

** Changed in: gnome-software (Ubuntu Yakkety)
     Assignee: (unassigned) => Robert Ancell (robert-ancell)

** Changed in: gnome-software (Ubuntu Xenial)
     Assignee: (unassigned) => Robert Ancell (robert-ancell)

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https://bugs.launchpad.net/bugs/1679435

Title:
  GNOME Software fails to install .deb packages that trigger debconf
  prompts

Status in gnome-software package in Ubuntu:
  Fix Committed
Status in gnome-software source package in Xenial:
  Triaged
Status in gnome-software source package in Yakkety:
  Triaged
Status in gnome-software source package in Zesty:
  Fix Committed
Status in gnome-software source package in Artful:
  Fix Committed

Bug description:
  [Impact]
  GNOME Software doesn't provide debconf support when using aptd. This means any package installation / upgrade that triggers a debconf prompt can fail. The requested package might not do a prompt, but some dependency can.

  [Test Case]
  1. Install a .deb file that causes a debconf prompt (https://launchpad.net/~vorlon/+archive/ubuntu/debconf-tests contains a test package).
  $ gnome-software --local-filename=noisy-fake-driver_0.6_amd64.deb

  Expected result:
  Package is installed after a debconf prompt is shown.

  Observed result:
  Package fails to install, no prompt is shown.

  [Regression Potential]
  The solution was to provide a pipe when using aptd to allow the debconf prompt to be handled in the session. This could introduce new bugs and/or security issues.

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