| I upgraded my personal laptop to NixOS 18.03 (currently still nixos-unstable; the release branch hasn't been cut) a week ago and I've had no problems You can switch which version of Nix you're using whenever you want, and you can install multiple versions of Nix side-by-side if you want to, just like with any other package. To install Nix 2.0 on an older release of Nixpkgs/NixOS, just use the package `nixUnstable`. You can install it with `nix-env` if you want to try it out right now. The only real differences between a typical upgrade and upgrading between releases are: 1. You'll need more storage space for the course of the upgrade, because most of your dependencies have been updated. 2. You might have to change your config up a little, because a few packages have been removed, renamed, or are out of date. You still get all the nice rollback features that you're used to, and if Nix 1.x is part of your old system profile and 2.0 part of your new one, when you roll back, Nix will roll back, too. To more directly answer your question: NixOS 18.03 will indeed include Nix 2.0. |
Is there any idea about the release date for 18.03 (or 18.0X, whatever is 2.0 based)?