[Bug 1153224] Re: [FFE] Move to logind for session tracking

[Martin Pitt]

** Description changed:

  At the last UDS we decided to finally drop the long-abandoned ConsoleKit
  and migrate to logind:
  https://blueprints.launchpad.net/ubuntu/+spec/foundations-1303
  -consolekit-logind-migration
  
  I fixed current raring's logind package (from systemd source) to
  actually work standalone, so we can use it without the init bits.
  
  However, as some packages like gnome-session require a newer version
  than 44, I would actually like to update this to the current upstream
  version 198. A working package is in https://launchpad.net/~ubuntu-core-
  dev/+archive/logind/+packages . This involves a soname bump of libudev,
  but as the ABI didn't actually change that much, that will mostly be
  some 50 rebuilds. (Note that libudev1 works fine against the older udev,
  and vice versa). Please note that while udev has been merged into the
  systemd source, I do not propose to update udev to version 198 at this
  point. We first need to review our current changes and apply that to the
  current udev, and it is not clear whether doing that in raring is
  appropriate. So this FFE does *not* include a request for an updated
  udev, we'll continue to use the standalone version 175 for the time
  being.
  
  This PPA also has a number of packages which move from ConsoleKit to
  logind for session tracking. As most upstream moved to logind long ago,
  this is usually very trivial: Add libsystemd-logind-dev build dep,
  enable the corresponding configure option, done.
  
- The blueprint has a list of reverse dependencies that should be
- migrated, and an archive grep has been done to find packages which talk
- to ConsoleKit's D-BUS API without a declared dependency.
+ The blueprint has an exhaustive list of reverse dependencies that should
+ be migrated; there are a number of packages which talk to ConsoleKit's
+ D-BUS API without a declared dependency, found by an archive grep.
  
- However, we don't need to do this in lockstep: logind and ConsoleKit
- work just fine side by side, so at no point during the transition there
- will be a state where a package is broken. I still would like to convert
- as much as possible (read: all packages which have logind support in the
- current raring version), and I have some time reserved to do this. I
- figure that Stephane Graber, James Hunt, Steve Langasek, and/or the
- desktop team can also give a hand with this.
+ However, we don't need to do this in a big lockstep: logind and
+ ConsoleKit work just fine side by side, so at no point during the
+ transition there will be a state where a package is broken. I still
+ would like to convert as much as possible (read: all packages which have
+ logind support in the current raring version), and I have some time
+ reserved to do this. I figure that Stephane Graber, James Hunt, Steve
+ Langasek, and/or the desktop team can also give a hand with this.
  
  For the record, I run my workstation with consolekit purged since
  Friday, so that I see the missing bits (which would otherwise continue
  to use CK and thus work just fine).
  
  While this is quite a large change, I believe that the risk is
  relatively low. logind has been tested and used in Fedora, Arch, some
  Debian developers, and other distributions for over a year now, and many
  upstreams like NetworkManager, GNOME, upower, udisks etc. do not test
  with CK any more. In fact, GNOME 3.8 drops support for Consolekit, which
  blocks the Ubuntu GNOME remix (for raring) and Ubuntu itself (for
  raring+1) from updating to a newer GNOME.

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https://bugs.launchpad.net/bugs/1153224

Title:
  [FFE] Move to logind for session tracking

Status in “systemd” package in Ubuntu:
  New

Bug description:
  At the last UDS we decided to finally drop the long-abandoned
  ConsoleKit and migrate to logind:
  https://blueprints.launchpad.net/ubuntu/+spec/foundations-1303
  -consolekit-logind-migration

  I fixed current raring's logind package (from systemd source) to
  actually work standalone, so we can use it without the init bits.

  However, as some packages like gnome-session require a newer version
  than 44, I would actually like to update this to the current upstream
  version 198. A working package is in https://launchpad.net/~ubuntu-
  core-dev/+archive/logind/+packages . This involves a soname bump of
  libudev, but as the ABI didn't actually change that much, that will
  mostly be some 50 rebuilds. (Note that libudev1 works fine against the
  older udev, and vice versa). Please note that while udev has been
  merged into the systemd source, I do not propose to update udev to
  version 198 at this point. We first need to review our current changes
  and apply that to the current udev, and it is not clear whether doing
  that in raring is appropriate. So this FFE does *not* include a
  request for an updated udev, we'll continue to use the standalone
  version 175 for the time being.

  This PPA also has a number of packages which move from ConsoleKit to
  logind for session tracking. As most upstream moved to logind long
  ago, this is usually very trivial: Add libsystemd-logind-dev build
  dep, enable the corresponding configure option, done.

  The blueprint has an exhaustive list of reverse dependencies that
  should be migrated; there are a number of packages which talk to
  ConsoleKit's D-BUS API without a declared dependency, found by an
  archive grep.

  However, we don't need to do this in a big lockstep: logind and
  ConsoleKit work just fine side by side, so at no point during the
  transition there will be a state where a package is broken. I still
  would like to convert as much as possible (read: all packages which
  have logind support in the current raring version), and I have some
  time reserved to do this. I figure that Stephane Graber, James Hunt,
  Steve Langasek, and/or the desktop team can also give a hand with
  this.

  For the record, I run my workstation with consolekit purged since
  Friday, so that I see the missing bits (which would otherwise continue
  to use CK and thus work just fine).

  While this is quite a large change, I believe that the risk is
  relatively low. logind has been tested and used in Fedora, Arch, some
  Debian developers, and other distributions for over a year now, and
  many upstreams like NetworkManager, GNOME, upower, udisks etc. do not
  test with CK any more. In fact, GNOME 3.8 drops support for
  Consolekit, which blocks the Ubuntu GNOME remix (for raring) and
  Ubuntu itself (for raring+1) from updating to a newer GNOME.

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