[Bug 2152795] Re: distupgrade kubuntu 25.10 to 26.04 fails; many broken kde package dependencies

[Daniel Tang]

The root cause appears to be:

```
Investigating (0) qml6-module-org-kde-kirigami:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib >
Broken qml6-module-org-kde-kirigami:amd64 Depends on libkirigami6:amd64 < 6.17.0-0ubuntu2 | 6.24.0-0ubuntu1 @ii umH > (= 6.24.0-0ubuntu1)
  Considering libkirigami6:amd64 56 as a solution to qml6-module-org-kde-kirigami:amd64 222
  MarkKeep qml6-module-org-kde-kirigami:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib > FU=0
  Re-Instated libkirigami-data:amd64
  Re-Instated libkirigami6:amd64
  Re-Instated libkirigamidelegates6:amd64
  Re-Instated libkirigamicontrols6:amd64
  Re-Instated libkirigamipolyfill6:amd64
  Re-Instated qml6-module-org-kde-kirigami:amd64
Investigating (0) libkirigamilayoutsprivate6:amd64 < 6.17.0-0ubuntu2 | 6.24.0-0ubuntu1 @ii umH Ib >
Broken libkirigamilayoutsprivate6:amd64 Depends on libkirigami-data:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU > (= 6.17.0-0ubuntu2)
  Considering libkirigami-data:amd64 21 as a solution to libkirigamilayoutsprivate6:amd64 57
  Added libkirigami-data:amd64 to the remove list
  MarkKeep libkirigami-data:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU > FU=0
  Fixing libkirigamilayoutsprivate6:amd64 via keep of libkirigami-data:amd64
Investigating (0) libkirigamidelegates6:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib >
Broken libkirigamidelegates6:amd64 Depends on libkirigami-data:amd64 < 6.17.0-0ubuntu2 | 6.24.0-0ubuntu1 @ii umH > (= 6.24.0-0ubuntu1)
  Considering libkirigami-data:amd64 21 as a solution to libkirigamidelegates6:amd64 56
  MarkKeep libkirigamidelegates6:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib > FU=0
  Holding Back libkirigamidelegates6:amd64 rather than change libkirigami-data:amd64
Investigating (0) libkirigamipolyfill6:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib >
Broken libkirigamipolyfill6:amd64 Depends on libkirigami-data:amd64 < 6.17.0-0ubuntu2 | 6.24.0-0ubuntu1 @ii umH > (= 6.24.0-0ubuntu1)
  Considering libkirigami-data:amd64 21 as a solution to libkirigamipolyfill6:amd64 56
  MarkKeep libkirigamipolyfill6:amd64 < 6.17.0-0ubuntu2 -> 6.24.0-0ubuntu1 @ii umU Ib > FU=0
  Holding Back libkirigamipolyfill6:amd64 rather than change libkirigami-data:amd64
```

** Summary changed:

- distupgrade kubuntu 25.10 to 26.04 fails; many broken kde package dependencies
+ distupgrade kubuntu 25.10 to 26.04 fails; many broken kde package dependencies including libkirigami

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https://bugs.launchpad.net/bugs/2152795

Title:
  distupgrade kubuntu 25.10 to 26.04 fails; many broken kde package
  dependencies including libkirigami

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  When performing a dist-upgrade from 25.10 to 26.04, the upgrader detects 39 broken kde packages.
  Since I created a snapshot (it is a vm on proxmox) beforehand, I can easily rollback.
  I could possibly start a new VM with clean install, but I would prefer to distupgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: ubuntu-release-upgrader-core 1:25.10.10
  ProcVersionSignature: Ubuntu 6.17.0-29.29-generic 6.17.13
  Uname: Linux 6.17.0-29-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Sat May 16 15:23:48 2026
  InstallationDate: Installed on 2023-12-16 (882 days ago)
  InstallationMedia: Kubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to questing on 2026-05-16 (0 days ago)
  VarLogDistupgradeAptHistorylog:
   Start-Date: 2026-05-16  15:22:36
   Requested-By: wvanmourik (1000)
   End-Date: 2026-05-16  15:22:37
  VarLogDistupgradeApttermlog:
   Log started: 2026-05-16  15:22:36
   Log ended: 2026-05-16  15:22:37

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