If you follow them as stated (as I did), when you go to build the manifest, you will get an error:
error: No remote refs found for ‘flathub’
Error installing deps: running `flatpak --user install -y --noninteractive flathub org.kde.Sdk/x86_64/5.15-23.08`: Child process exited with code 1
The repo already was added system wide, and adding it again did not change the error.
Adding the repo with the --user flag allowed the build command to continue.
This fixes a problem with the instructions.
If you follow them as stated (as I did), when you go to build the manifest, you will get an error:
The repo already was added system wide, and adding it again did not change the error.
Adding the repo with the --user flag allowed the build command to continue.