My intention was to combine installer and launcher (i.e. FSO Installer and wxLauncher) into one program AND make it easier to use. Whether that works out or not is something we will see once this is finally finished. It will take a while but hopefully I'll be able to release 1.0.0 this year.
I'm finally done with the dev tab UI, now I still have to write the saving and upload code. Afterwards I'll have to test and fix the code which launches mods. I'll probably have to fix the install/update/uninstall parts, too. I guess I'll release a new beta at that point and work on UI polishing, bug fixing and eventually torrent support. Once that beta is polished and stable enough, I'll be able to release 1.0.0 at which point (I hope) more and more people will use it.
@m!m: I've built a Fedora VM and wasn't able to reproduce your issue on it. I cloned the repo, installed the neccessary packages with dnf and finally ran Knossos both with "ninja debug" and "ninja run". It worked both times without issue. Any idea what I did differently?