Raw via RawTherapee into Gimp 2.10 Ubuntu not working

Software RawTherapee
1

I’m on Ubuntu 18.04 but Gimp from a PPA to get the current version.
RawTherapee is the one from the amin Ubuntu repository.

Where should I look to make Gimp use RT to open raw files; and where should I look to make RT send an image it has opened on to the Gimp for editing, please?

2

In gimp plugins, you should have a rawtherapee plugin. Or in RawTherapee, set your editor to gimp.