[Bug 1153224] Re: [FFE] Move to logind for session tracking
Scott Kitterman
ubuntu at kitterman.com
Mon Mar 18 10:20:13 UTC 2013
I'll be almost entirely offline the next three days. I'd appreciate it
if another release team member would follow up on this. No matter which
option we pick, we should do it soon.
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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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