In a single day, sourced only from fedi, 268 people have committed to migrating to a fork. 184 as users and 84 as contributors maintaining packages. This is a very good starting point for a #NixPkgs fork (which includes #NixOS).
The biggest blocker remaining is #Nix itself. Securing maintainers for Nix (the cpp project) would mean a newly established fork can exist independently. If you would be able to do so, please get in touch.