Public bug reported:
[Impact]
If two intertwined updates are being released, call them "breaks-phased-dep"
and "phased-dep", version 2; both are installed in version 1; and
"breaks-phased-dep" is available to install (e.g. fully phased), then `apt
full-upgrade/dist-upgrade` will remove "phased-dep" to install
"breaks-phased-dep".
The expected behavior is that "breaks-phased-dep" is kept back as the
new version of the dependency is not yet ready.
[Test plan]
Regression test suite, with the addition of new test:
# Test case breaks-phased-dep: A released update breaks installed version of
phased-dep
insertinstalledpackage 'phased-dep' 'all' '1'
insertinstalledpackage 'breaks-phased-dep' 'all' '1'
insertpackage 'unstable-updates' 'breaks-phased-dep' 'all' '3' 'Breaks:
phased-dep (<< 3)'
insertpackage 'unstable-updates' 'phased-dep' 'all' '3'
'Phased-Update-Percentage: 0'
setupaptarchive
testsuccessequal "Reading package lists...
Building dependency tree...
Calculating upgrade...
The following packages have been kept back:
breaks-phased-dep
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded." aptget
dist-upgrade
[Where problems could occur]
here be dragons
[Details]
This should also affect the original implementation in update-manager.
Basically both implementations work by first calculating the full upgrade, and
then reverting any upgrades to phased packages using MarkKeep.
However; in case of a Breaks, the phased package at this point is marked
"remove" and not "upgrade", so the keep back logic does not trigger.
** Affects: apt (Ubuntu)
Importance: Medium
Status: Triaged
** Affects: update-manager (Ubuntu)
Importance: Undecided
Status: New
** Affects: update-manager (Ubuntu Focal)
Importance: Undecided
Status: New
** Affects: apt (Ubuntu Jammy)
Importance: Undecided
Status: New
** Affects: update-manager (Ubuntu Jammy)
Importance: Undecided
Status: Won't Fix
** Affects: apt (Ubuntu Noble)
Importance: Undecided
Status: New
** Affects: update-manager (Ubuntu Noble)
Importance: Undecided
Status: Won't Fix
** Affects: apt (Ubuntu Oracular)
Importance: Undecided
Status: New
** Affects: update-manager (Ubuntu Oracular)
Importance: Undecided
Status: Won't Fix
** Affects: apt (Ubuntu Plucky)
Importance: Medium
Status: Triaged
** Affects: update-manager (Ubuntu Plucky)
Importance: Undecided
Status: Won't Fix
** Changed in: apt (Ubuntu)
Status: New => Triaged
** Changed in: apt (Ubuntu)
Importance: Undecided => Medium
** Description changed:
[Impact]
If two intertwined updates are being released, call them "breaks-phased-dep"
and "phased-dep", version 2; both are installed in version 1; and
"breaks-phased-dep" is available to install (e.g. fully phased), then `apt
full-upgrade/dist-upgrade` will remove "phased-dep" to install
"breaks-phased-dep".
The expected behavior is that "breaks-phased-dep" is kept back as the
new version of the dependency is not yet ready.
[Test plan]
Regression test suite, with the addition of new test:
# Test case breaks-phased-dep: A released update breaks installed version of
phased-dep
insertinstalledpackage 'phased-dep' 'all' '1'
insertinstalledpackage 'breaks-phased-dep' 'all' '1'
insertpackage 'unstable-updates' 'breaks-phased-dep' 'all' '3' 'Breaks:
phased-dep (<< 3)'
insertpackage 'unstable-updates' 'phased-dep' 'all' '3'
'Phased-Update-Percentage: 0'
setupaptarchive
testsuccessequal "Reading package lists...
Building dependency tree...
Calculating upgrade...
The following packages have been kept back:
- breaks-phased-dep
+ breaks-phased-dep
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded." aptget
dist-upgrade
[Where problems could occur]
here be dragons
+
+ [Details]
+ This should also affect the original implementation in update-manager.
Basically both implementations work by first calculating the full upgrade, and
then reverting any upgrades to phased packages using MarkKeep.
+
+ However; in case of a Breaks, the phased package at this point is marked
+ "remove" and not "upgrade", so the keep back logic does not trigger.
** Also affects: update-manager (Ubuntu)
Importance: Undecided
Status: New
** Also affects: apt (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: update-manager (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: apt (Ubuntu Plucky)
Importance: Medium
Status: Triaged
** Also affects: update-manager (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: apt (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: update-manager (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: apt (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: update-manager (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: apt (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: update-manager (Ubuntu Noble)
Importance: Undecided
Status: New
** No longer affects: apt (Ubuntu Focal)
** Changed in: update-manager (Ubuntu Jammy)
Status: New => Won't Fix
** Changed in: update-manager (Ubuntu Noble)
Status: New => Won't Fix
** Changed in: update-manager (Ubuntu Oracular)
Status: New => Won't Fix
** Changed in: update-manager (Ubuntu Plucky)
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/2098140
Title:
Breaks: phased-dep (<< phasing version) removes phased-dep
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