Bug 511517

Summary: Discover flatpak backend is not showing the freedesktop plugins
Product: [Applications] Discover Reporter: pollux/ned <pollux66>
Component: Flatpak BackendAssignee: Plasma Bugs List <plasma-bugs-null>
Status: REPORTED ---    
Severity: normal CC: akselmo, aleixpol, jgrulich, travier
Priority: NOR    
Version First Reported In: 6.5.1   
Target Milestone: ---   
Platform: CachyOS   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: gnome-software showing the runtimes for install
gamescope shows up

Description pollux/ned 2025-11-02 14:09:04 UTC
Created attachment 186415 [details]
gnome-software showing the runtimes for install

SUMMARY
I have noticed that discover doesn't show any of the runtime/plugins that apps like lutris, bottles and heroic like to use.

Like gamescope, vkbasalt, mangohud etc, the user needs to open the terminal to install these runtimes, which the runtimes these apps use are.

org.freedesktop.Platform.VulkanLayer 

STEPS TO REPRODUCE
1. Use discover with flatpak backend
2. Search for any of these runtimes
3. See that discover doesn't show the freedesktop runtimes/plugins, it only shows the mangohud valve plugin

OBSERVED RESULT
You can't install the runtime's in a gui easily and will have to open a terminal to get them installed.

EXPECTED RESULT
For discover to show these runtime's either on one page called freedesktop runtime's like what gnome-software does or separately like with that mangohud flatpak plugin that appears in discover. 

SOFTWARE/OS VERSIONS
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Cachyos
KDE Plasma Version: 6.5.1
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0

ADDITIONAL INFORMATION
I have linked a screenshot of what gnome-software does as a example
Comment 1 Akseli Lahtinen 2025-11-03 10:39:41 UTC
Can't repro, I can find them in the discover search.

Operating System: KDE Linux 2025-11-03
KDE Plasma Version: 6.5.80
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.0
Kernel Version: 6.17.6-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: AMD Radeon RX 6600
Comment 2 pollux/ned 2025-11-03 10:43:26 UTC
(In reply to Akseli Lahtinen from comment #1)
> Can't repro, I can find them in the discover search.
> 
> Operating System: KDE Linux 2025-11-03
> KDE Plasma Version: 6.5.80
> KDE Frameworks Version: 6.20.0
> Qt Version: 6.10.0
> Kernel Version: 6.17.6-arch1-1 (64-bit)
> Graphics Platform: Wayland
> Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
> Memory: 16 GiB of RAM (15.5 GiB usable)
> Graphics Processor: AMD Radeon RX 6600

Can I see proof so I know what I am looking for?
Comment 3 Akseli Lahtinen 2025-11-03 12:28:03 UTC
Created attachment 186458 [details]
gamescope shows up

Sorry, forgot to do that.

I am on KDE Linux, so Discover shows only flatpak applications. Does cachyos show pkgkit (so likely pacman) and any others too?
Comment 4 pollux/ned 2025-11-03 12:53:35 UTC
(In reply to Akseli Lahtinen from comment #3)
> Created attachment 186458 [details]
> gamescope shows up
> 
> Sorry, forgot to do that.
> 
> I am on KDE Linux, so Discover shows only flatpak applications. Does cachyos
> show pkgkit (so likely pacman) and any others too?

by default when installing discover the packagekit backend does not get installed, you can add flatpak to it and so that's all i use it for on arch distro's, as packagekit-qt6 has bugs with breaking updates on arch supposedly.