SUMMARY Currently, when dragging an icon from the Application Launcher to the Icons Only Task Manager, the `launchers` property of `[Containments][N][Applets][M][Configuration][General]` in `~/.config/plasma-org.kde.plasma.desktop-appletsrc` will reference the absolute path name / absolute URL, e.g. `file:///nix/store/6j0kc3hvb4s5wrpz0aaxcmd3fdjgp56g-system-path/share/applications/signal.desktop`, instead of the location-independent form, e.g. `applications:signal.desktop`, that is used when selecting "Pin to Task Manager" for a running application's window. It would be nice if the location-independent form would always be used. I.e. if the behaviour of clicking "Pin to Task Manager" in the Task Manager's right-click menu for a running application's window would be applied also when dragging an icon to the Task Manager. The current behaviour causes problems when the absolute path changes, cf. https://github.com/NixOS/nixpkgs/issues/322023. STEPS TO REPRODUCE 1. Create a panel with Icons Only Task Manager 2. Drag an icon from Application Launcher to Icons Only Task Manager 3. Inspect `~/.config/plasma-org.kde.plasma.desktop-appletsrc` and find a `file://...` URL with absolute path 4. Start an application 5. Right-click on the Task Manager icon for the open window of that application and select "Pin to Task Manager" 6. Inspect `~/.config/plasma-org.kde.plasma.desktop-appletsrc` and find an `applications:xxx.desktop` URI OBSERVED RESULT A `file://...` URL with absolute path is used. EXPECTED RESULT A location-independent `applications:xxx.desktop` URI is used. SOFTWARE/OS VERSIONS Operating System: NixOS 25.11 KDE Plasma Version: 6.3.5 KDE Frameworks Version: 6.14.0 Qt Version: 6.9.0 Kernel Version: 6.15.0 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 9 6900HS with Radeon Graphics Memory: 30,6 GiB of RAM Graphics Processor 1: AMD Radeon 680M Graphics Processor 2: AMD Radeon RX 6800S Manufacturer: ASUSTeK COMPUTER INC. Product Name: ROG Zephyrus G14 GA402RK_GA402RK System Version: 1.0
In testing, it looks like the newly-pinned app gets saved with an absolute path rather than just a desktop file name based on how it's packaged, not based on how it's pinned. For example, if I pin an app that came from Fedora packaging or was built-from source, it always gets saved as a desktop file name. But if I pin an app from Flathub, it always uses an absolute path. Need to look into the exact conditions that trigger this logic, and possibly move away from it.
(In reply to Nate Graham from comment #1) > In testing, it looks like the newly-pinned app gets saved with an absolute > path rather than just a desktop file name based on how it's packaged, not > based on how it's pinned. Thanks for looking into the matter. FYI: I only have Signal (the app I noticed the problem with) installed from NixOS. There is currently no Signal Flatpak is installed. Also, as far as I can tell, there is currently no file from a Flatpak present -- if I ever had the Signal Flatpak installed on that computer. Maybe we're seeing an intersection of multiple causes for this issue?
A possibly relevant merge request was started @ https://invent.kde.org/frameworks/kservice/-/merge_requests/205
This bug may have been resolved with https://invent.kde.org/frameworks/kservice/-/commit/09ec46a6d9c15e4ce4935df07a06cac918c7004e If possible, can you test this out?
This is the same patch as NixOS is carrying since a very long time https://github.com/NixOS/nixpkgs/blob/master/pkgs/kde/frameworks/kservice/qdiriterator-follow-symlinks.patch Not sure if deleton is part of this bug https://github.com/NixOS/nixpkgs/blob/master/pkgs/kde/frameworks/kservice/handle-sycoca-deletion.patch
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I'll test KDE Frameworks 6.17 once it lands in NixOS unstable. Until then see Sandro's reply.
I updated to KDE Frameworks 6.17 (NixOS 25.11.20250812.005433b) and the issue persists as Sandro predicted. Operating System: NixOS 25.11 KDE Plasma Version: 6.4.4 KDE Frameworks Version: 6.17.0 Qt Version: 6.9.1 Kernel Version: 6.16.0 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 9 6900HS with Radeon Graphics Memory: 32 GiB of RAM (30,6 GiB usable) Graphics Processor 1: AMD Radeon RX 6800S Graphics Processor 2: AMD Radeon 680M Manufacturer: ASUSTeK COMPUTER INC. Product Name: ROG Zephyrus G14 GA402RK_GA402RK System Version: 1.0