Now with my +1 we have shared calendar on Baikal, not simple to do. We are 2019 and I have to spend like 2 hours of learning doc and code to have basic feature like sharing a calendar ... I think it's more simple to do it with owncloud but having owncloud just for calendar is fucking fat. I think I will do a change in Yunohost packages to have more integration.
I'm a french guy alone here.