https://bugs.kde.org/show_bug.cgi?id=430092
Bug ID: 430092
Summary: Qt app compiled for KDE flatpak runtime cannot open
directories
Product: Qt/KDE Flatpak Runtime
Version: unspecified
Platform: Flatpak
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: aleix...@kde.org
Reporter: joshua.gage.st...@gmail.com
Target Milestone: ---
SUMMARY
A Flathub submission request for an Qt application was made recently, and a bug
has been found where the application cannot open directories:
https://github.com/flathub/flathub/pull/1978
STEPS TO REPRODUCE
1. Run the following commands to install and run the flatpak:
flatpak install --user
https://dl.flathub.org/build-repo/32694/org.multimc.MultiMC.flatpakref
flatpak run org.multimc.MultiMC
2. Try to click either:
Folders > View Instance Folder
.. or:
Folders > View Central Mods Folder
OBSERVED RESULT
The application window merely hangs when trying to click on either of these
menu items. Giving more sandbox permissions for accessing folders, dbus, etc,
doesn't make a difference either.
EXPECTED RESULT
A folder will open in the desktop's file manager. This works as expected with
the latest release tarball:
https://multimc.org/#Download
As well as when compiled from source, as found here:
https://github.com/MultiMC/MultiMC5
SOFTWARE/OS VERSIONS
Linux distro: Fedora 33 Workstation
Desktop: Gnome 3.38.1
Flatpak version: 1.8.3
Flatpak runtime: org.kde.Platform/x86_64/5.15
ADDITIONAL INFORMATION
Some debugging has led me to believe that this call to
QDesktopServices::openUrl() is the cause of the hanging:
https://github.com/MultiMC/MultiMC5/blob/develop/api/gui/DesktopServices.cpp#L84
This bug may also be related to a similar regression fixed in the version of
xdg-utils in the Freedesktop runtime:
https://github.com/flatpak/flatpak-xdg-utils/pull/36
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