Launchpad Entry: aptdaemon-p-pkcompat
Packages affected: aptdaemon, python-packagekit
This section should include a paragraph describing the end-user impact of this change. It is meant to be included in the release notes of the first release in which it is implemented. (Not all of these will actually be included in the release notes, at the release manager's discretion; but writing them is a useful exercise.)
It is mandatory.
AptDaemon was initially written to overcome the short commings of PackageKit for APT and to provide a deeper integration into the system. PackageKit is separated into two D-Bus interface. On the one hand the system DBus interface provides a full fledged API for a package managing application (e.g. update manager or application manager) on the other one the session DBus interface which should be used by third party applications only. Since we already had powerful package mangers (software-center and update-manager) there wasn't any need to focus on the system DBus interface. The session DBus interface was implmeneted by session-installer for Ubuntu/Debian.
But nowadays with GObject Introspection and a better client library the use of the session interface isn't very popular anymore. Some GNOME applications directly use the glib based client library, e.g. nautilus or the coming region/language settings.
A second reason is that also some Ubuntu specific applications want query for updates (session-indicator). It would make sense to provide a sane API here which uses caches. So the use of PackageKit's GetUpdates method would be good idea. This would also allow to use the gnome-settings-daemon update and firmware plugins in favor of update-notifier in the long run.
A valid question is: Why not replace AptDaemon by PackageKit at all? The answer is that we need a highly integrated backend for software-center: chaining of transactions, storing meta-data in transactions, handling of purchases, downloading while installing (coming feature)
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Should cover changes required to the UI, or specific UI that is required to implement this
Code changes should include an overview of what needs to change, and in some cases even the specific details.
- data migration, if any
- redirects from old URLs to new ones, if any
- how users will be pointed to the new way of doing things, if necessary.
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This need not be added or completed until the specification is nearing beta.
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BoF agenda and discussion
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