A question I ask rather here than on that old thread: Is it possible to attach a monitor, mouse and keyboard to a jolla phone with sailfish and run a linux desktop?

It looks like keyboard works, mouse works when some settings are set, monitor doesn't.

https://forum.sailfishos.org/t/q-enable-external-keyboard-mo...

Not now, and probably not in the near future.

Don't buy if this is your main goal.

I have a NexPhone on order for this very reason. I can't wait to see how it will work out.