fedora-kde / SIG

#416 qt6-qtwayland for Qt6 applications is missing for KDE Plasma Wayland sessions
Closed: Fixed by ngompa. Opened by stefanb.

Closed: Fixed
Reopen Issue

For a Qt5 application on a KDE Plasma Wayland session everything is fine, because there is a direct installation dependency

# rpm -q --whatrequires 'qt5-qtwayland(x86-64)'
plasma-workspace-wayland-5.27.8-2.fc39.x86_64

But for a Qt6 application (wireshark, calibre (6.x on F39), qmasterpassword) you get a warning on the command line like

$ wireshark
 ** (wireshark:234933) 11:56:46.231227 [GUI WARNING] -- Could not find the Qt platform plugin "wayland" in ""

i.e. Qt6 applications are falling back to X11/XWayland.

Nothing depends on qt6-qtwayland and hence it is missing on a normal KDE Plasma installation.

Should plasma-workspace-wayland depend on qt6-qtwayland to fix this?

Metadata Update from @marcdeop:
- Issue tagged with: meeting

I'm pretty sure the problem will appear in reverse for Qt5 applications on F40+ when we move to KDE Plasma 6.

I thought we already had implemented a conditional dependency for this...

@jgrulich Would it make sense to implement a conditional Requires on qtX-qtbase-gui packages?

For example, we could add the following to qt6-qtbase-gui:

# Ensure QtWayland is installed when libwayland-client is installed
Requires:      (qt6-qtwayland%{?_isa} if libwayland-client%{?_isa})

Metadata Update from @ngompa:
- Issue assigned to jgrulich

Metadata Update from @ngompa:
- Issue untagged with: meeting
- Issue tagged with: easyfix, packaging

Any solution should not be tied to Plasma packages, the problem equally applies to running Qt apps on Gnome Wayland, Sway, etc

Metadata Update from @ngompa:
- Issue assigned to ngompa (was: jgrulich)

I've taken care of this with a simple weak dependency (to avoid deploops when doing Qt upgrades):

  • Qt5: https://src.fedoraproject.org/rpms/qt5-qtbase/c/d9a266c71e216ba604078b0a52305cf473e40da7
  • Qt6: https://src.fedoraproject.org/rpms/qt6-qtbase/c/d130b7be6ca3390983e26af63148435947be6988

These will be part of the next Qt updates.

Metadata Update from @ngompa:
- Issue close_status updated to: Fixed
- Issue status updated to: Closed (was: Open)

Issue status updated to: Open (was: Closed)

Issue status updated to: Closed (was: Open)
Issue close_status updated to: Fixed
Metadata

easyfix packaging

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