Thank you all!
I had problems with running it from a fedora distrobox and could not export it at all (it complained about missing libraries.
Since then, I discovered this thread: Emacs, aspell, flatpak, oh my - #26 by brogos
and learned about sysext and custom builds.
I’m going to investigate that, otherwise I will stick with Helix.
Ultimately I want to return to emacs because of org mode and magit.