Ubuntu
mutter package

gnome-settings-daemon FTBFS in cosmic-proposed due to circular relationship involving mutter

Bug #1808796 reported by Iain Lane
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
mutter (Ubuntu)
Fix Released
Undecided
Unassigned
Cosmic
Fix Released
Undecided
Iain Lane

Bug Description

[ Description ]

Currently gnome-settings-daemon can't be built in cosmic-proposed for arm64 and armhf:

The following packages have unmet dependencies:
 sbuild-build-depends-gnome-settings-daemon-dummy : Depends: mutter (>= 3.27.90) but it is not going to be installed

analysing the situation with chdist shows:

The following packages have unmet dependencies.
 mutter : Depends: gnome-settings-daemon but it is not going to be installed

and then diving further:

The following packages have unmet dependencies.
 gnome-settings-daemon : Depends: gnome-settings-daemon-schemas (= 3.30.1.2-1ubuntu2) but 3.30.1.2-1ubuntu3 is to be installed

What has happened is that gnome-settings-daemon indirectly ends up Build-Depending on gnome-settings-daemon again:

  src:g-s-d - (BD) -> mutter - (D) -> g-s-d

gnome-settings-daemon has "Depends: gnome-settings-daemon-schemas (= ${source:Version})". This in itself is correct, but when the arch:all gnome-settings-daemon-schemas is published before an arch-only build is picked up, we have skew that results in this failure. g-s-d-schemas 3.30.1.2-1ubuntu3 is available, but g-s-d 3.30.1.2-1ubuntu2, the strict dependency means it is uninstallable.

Presumably we'd gotten lucky up until now and never had a newer g-s-d-schemas published before all other arches at least started building.

[ Fix ]

Cut the arch:any part of the circular dependency. We make mutter Depend on gnome-settings-daemon-schemas instead, since it only needs the schemas and not running daemons. We still have a circular BD/D chain from g-s-d to itself, but now it looks like:

  src:g-s-d - (BD) -> mutter - (D) -> g-s-d-schemas

...importantly there are no strict version requirements any more, so this kind of skew isn't a problem. If mutter ever changes to have "Depends: gnome-settings-daemon-schemas (>= some-version)", this should also work - since the arch:all gnome-settings-daemon-schemas will be installable everywhere.

[ QA ]

I tested this in a bileto silo and it worked:

https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3567/+packages

Once the fixed mutter is published, we should be able to retry the g-s-d builds.

[ Regression potential ]

mutter will no longer Depend on gnome-settings-daemon itself (the daemons). This might expose missing g-s-d dependencies from other packages. These could only be out-of-archive packages though:

laney@raleigh> reverse-depends -r cosmic mutter
Reverse-Depends
===============
* gnome-shell
* vanilla-gnome-desktop

and both of these depend on gnome-settings-daemon already.

See original description
Revision history for this message
Iain Lane (laney) wrote :

This was fixed in debian by introducing a g-s-d-common package. That's synced to disco, so disco is good too.

description: updated
Changed in mutter (Ubuntu):
status: New → Fix Released
Changed in mutter (Ubuntu Cosmic):
status: New → Incomplete
status: Incomplete → In Progress
assignee: nobody → Iain Lane (laney)
summary: - Circular relationship between gnome-settings-daemon and mutter
+ gnome-settings-daemon FTBFS in cosmic-proposed due to circular
+ relationship involving mutter
Revision history for this message
Łukasz Zemczak (sil2100) wrote : Please test proposed package

Hello Iain, or anyone else affected,

Accepted mutter into cosmic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mutter/3.30.2-1~ubuntu18.10.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-cosmic to verification-done-cosmic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-cosmic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in mutter (Ubuntu Cosmic):
status: In Progress → Fix Committed
tags: added: verification-needed verification-needed-cosmic
Revision history for this message
Iain Lane (laney) wrote :

gnome-settings-daemon 3.30.1.2-1ubuntu3 built after being retried with this mutter, and it's now in cosmic-updates.

tags: added: verification-done verification-done-cosmic
removed: verification-needed verification-needed-cosmic
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mutter - 3.30.2-1~ubuntu18.10.2

---------------
mutter (3.30.2-1~ubuntu18.10.2) cosmic; urgency=medium

  * Update gbp.conf and Vcs metadata for cosmic
  * control: Depend on g-s-d-schemas instead of g-s-d. We only need the
    schemas. (LP: #1808796)

 -- Iain Lane <email address hidden> Mon, 17 Dec 2018 10:53:41 +0000

Changed in mutter (Ubuntu Cosmic):
status: Fix Committed → Fix Released
Revision history for this message
Brian Murray (brian-murray) wrote : Update Released

The verification of the Stable Release Update for mutter has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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