(josh writes): "The Budgie edition of Solus now ships with the Nemo file manager by default instead of Nautilus. We decided to make this change as, since our last release, Nautilus has been ported to GTK4 and libadwaita. Because of this, it no longer fits in with the look and feel of the rest of the desktop environment. Additionally, a few features that people relied on were removed without replacement, prompting the desire to find a familiar and feature-rich file manager alternative."
It's official! And Budgie updates noted.
Simply awesome to the all involved.
End of an era for one flavor. Hope you find a viable #4 again.