touch-packages team mailing list archive

[Pat McGowan <pat.mcgowan@xxxxxxxxxxxxx>]

** Changed in: canonical-devices-system-image
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1389257

Title:
  Getting package versions via dpkg-query on startup is very expensive

Status in Canonical System Image:
  Fix Released
Status in unity-scopes-shell package in Ubuntu:
  Fix Released

Bug description:
  The plugin executes dpkg-query on startup to get version numbers of 3
  important packages (scopes-api, unity8, self). They are then passed to
  Smart Scopes Server with every request. Using dpkg-query at this stage
  seems to have big impact on startup time of the Dash (and phone).

  Michael Vogt suggested a simple postinst/postrm script that is
  executed for all 3 packages to put & update their versions via a flat
  text file, e.g.

  ::::::::::::::
  debian/postinst
  ::::::::::::::
  #!/bin/sh

  set -e

  if [ "$1" = "configure" ]; then
     dpkg-query -W -f'${Version}' $DPKG_MAINTSCRIPT_PACKAGE \
                > /var/lib/unity-scopes-shell/$DPKG_MAINTSCRIPT_PACKAGE
  fi::::::::::::::
  debian/postrm
  ::::::::::::::
  #!/bin/sh

  set -e

  rm -f  /var/lib/unity-scopes-shell/$DPKG_MAINTSCRIPT_PACKAGE

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