I can confirm that after latest update gnome-calendar works again :) thanks!

@d0nj0w that's hilarious but gnome-control-center works for me regardless of the parameter, I only have problems with gnome-calendar :D however, thanks to your debug flag, what I did notice was that when I launch gnome-control-center it loads up iris driver, like so:

I've tried the solution posted by @d0nj0w :

@moriel5 : I did the procedure you wrote about:

maybe we should install each of the dependencies of gnome-calendar debugging symbols and then we could run it with gdb and see where the code explodes ? how could we generate a list of such debug package names?

sorry for creating a duplicate task earlier.

sorry for being dumb, but how do I actually do that? Should I create a new entry in 'Tasks' and add a 'Bug' tag or something like that? or is there a separate prefix like B vs. T ?

Hello. I installed syncthing-gtk and six package was missing. I think that it just needs to be added to the dependencies of the package in solus, because when I manually installed python-six, the program went on without any trouble.