I have uploaded a new build of gala to the elementary-nightly repository (built from ricotz’ eats-kittens branch - which prepares support for libmutter-3.22 ), which fixes the crash that happened with older gala packages.

So, basically, the good news is:

The “Pantheon” session works again on fedora 25!

Well, sort of.

There are three main issues left that block usage of a “Pantheon” session on fedora, namely: