True, but with Flakes, as long as you didn’t upddate your lock file, you should always be able to rollback to your previous environment. On NixOS, you can then

True, but with Flakes, as long as you didn’t upddate your lock file, you should always be able to rollback to your previous environment. On NixOS, you can then configure background GC to clean up the Nix store periodically: https://search.nixos.org/options?channel=23.11&from=0&size=50&sort=relevance&type=packages&query=nix.gc https://search.nixos.org/options?channel=23.11&from=0&size=5...