[Bug 1431432] Re: conffiles prompt on vivid upgrade if report_metrics is enabled

[Didier Roche]

** Also affects: whoopsie-preferences (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1431432

Title:
  conffiles prompt on vivid upgrade if report_metrics is enabled

Status in whoopsie package in Ubuntu:
  New
Status in whoopsie-preferences package in Ubuntu:
  New

Bug description:
  There is a potential conffiles prompt when upgrading to vivid if
  report_metrics has been enabled, as we remove the report_crashes and
  use service enablement.

  Moving that value to a non conffiles (/ect/whoopsie) and using that in
  whoopsie-preferences.

  The conffile (/etc/default/whoopsie) was by default:

  [General]
  report_crashes=true

  
  For now, we remove the "report_crashes" (job enablement value) in preinst with sedding, and ship a new conffiles:
  [General]

  
  However, user might have changed the report metrics option in gnome-control-center, privacy settings, resulting in:
  [General]
  report_crashes=true
  report_metrics=true

  
  Proposal:
  1. we continue transitioning, removing "report_crashes" and cache that for job enablement/disablement in postinst
  2. we remove completely the conffile on upgrade/removal
  3. we move report_metrics value (if present in conffiles) to /etc/whoopsie, file with only
  [General]
  report_metrics= true
  if report_metrics was set to true
  4. we patch whoopsie g-c-c capplet to read/update from /etc/whoopsie

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