Created attachment 179356 [details] kde linux discover missing backend SUMMARY When you remove the package plasma-discover-rpm-ostree on Fedora Kinoite or use an atomic version of Fedora like Bazzite or just use KDE Linux STEPS TO REPRODUCE 1. use a system that does not ship a backend for distro packages, only a backend of flatpak is present (KDE Linux, Bazzite) 2. search for kmail in kickoff (any application not available on flathub but in distro repos) 3. click on kmail search result OBSERVED RESULT discover opens with the following error message Could not open appstream://org.kde.kmail2.desktop because it was not found in any available software repositories. EXPECTED RESULT Don't show search results for stuff you can't install SOFTWARE/OS VERSIONS Could not open appstream://org.kde.kmail2.desktop because it was not found in any available software repositories. Operating System: KDE Linux 202503120255 KDE Plasma Version: 6.3.80 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 Kernel Version: 6.13.6-arch1-1 (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION
That doesn't really have anything to do with the packagekit backend, but the appstream data. What happens is that as long as the appstream data is available (e.g. because of a package that provides the files in /usr/share/swcatalog) we still know this application exists. We don't know that it doesn't actually have any available sources until we load all backends though. So, in a way this is an integration bug. If the thing that provides the appstream data is no longer able to install the packages it should remove the appstream data. That is for example what happens with flatpak. We have the appstream data attached to the remote and if you remove e.g. flathub then it takes its appstream data with it and we won't enumerate applications that cannot be installed. https://invent.kde.org/kde-linux/kde-linux/-/issues/162
Thanks for the clarification!