Hi,

> 
> > Another issue is that Dolphin does not create/display thumbnails
> 
> 
> Is that Dolphin opened in GNOME desktop or in Plasma desktop?
> I am asking because Plasma Desktop fails to produce anything more
> than a black screen in the current state of the patches.

Well since Plasma is not yet running it's probably Dolphin in Gnome or other DE. Not sure why thumbnails are missing, but let's note issues about all the KDE programs.
 
> 
> I would also like to take this opportunity to share a couple of
> links related to the process of Plasma Desktop installation, which
> I found this week.
> 
> [Qt/KDE applications segfault on start due to stale qmlcache][1]
> [KDE Community page on kdesrc-build build-system][2]
> [Script to streamline setting up and maintaining KDE software][3]
> 
> I wish I could experiment with the KDESRC system, but I am still
> struggling with packaging a simple GNOME extension, so I am not
> ready for this.
> 
> [1]: https://github.com/NixOS/nixpkgs/issues/177720
> [2]: https://community.kde.org/Get_Involved/development#Building_software_with_kdesrc-build
> [3]: https://invent.kde.org/sdk/kdesrc-build

Thanks for the links. The issue is probably not in the KDESRC itself but in the Qt Framework.

I've been looking into Nix and they have additional patches. I managed to apply some of them.

But then the most needed  could not get to work (marked with ! in the commit).

Would somebody know how to port them into Guix?
It's mostly about CMake and QML. Which is what fails during the `kwin` and `plasma-workspace` build. Therefore they built but are broken when run.

----
Petr