[TobTobXX]

The one advantage Flatpak provides for me over Nix is containerisation. Not the bullet-proof kind, which allows you to run malware, but of the "reasonable" kind, which stops apps from storing to any directory they like just like that (only chroot level of "security"/isolation would be fine for me).

When there's a package manager / runtime that does both then I'm extremely interested.

[smoldesu]

Looking things up, someone has linked the Flatpak containerisation tech (bubblewrap) into the Nix store: https://github.com/fgaz/nix-bubblewrap

It looks... somewhat abandoned, but I'd wager it still works today. Failing that, setting up a shell alias to launch a regular binary in bubblewrap isn't too hard either.

[TobTobXX]

It's a long standing goal of mine to put together a distro with the system management aspect of NixOS, the isolation of bubblewrap and the lightness of Alpine. I'm gonna start this project when I have time™.