Pleroma and restricted timelines

Problem: you run a Pleroma instance, and you want to restrict the composite timelines to logged-in users only, but without going to the full "public: false". This is a common ask, and the option restrict_unauthenticated is documented, but the syntax is far from obvious!

Solution:

config :pleroma, :restrict_unauthenticated,

 timelines: %{local: true, federated: true}