I tested both guix on top of ubuntu and nixos, the distro. It's really nice. With Nix I was able to use Steam and play windows-only games :) It's great & usabl

I tested both guix on top of ubuntu and nixos, the distro. It's really nice. With Nix I was able to use Steam and play windows-only games :) It's great & usable without considering the new feature of "append-only" package management. nix is kind of database with a support for multiple versions of data, where data is programs, libraries, the system itself. I'm wondering whether it has a "freeze" command which allows to generate a stripped OS image without debug, without nix itself or support for nix features except a recipe to rebuild the frozen image with nix.