[Nix-dev] How to upgrade when Nix is too old to evaluate nixpkgs

[Bjørn Forsman]

On 30 June 2016 at 17:12, Domen Kožar <domen at dev.si> wrote:
> Did you try running switch? It should know how to upgrade Nix.

Doesn't work. "sudo nixos-rebuild build|switch" gives the same error.
Is that feature perhaps only available in newer NixOS releases?

This system isn't that important to me, but what is important is that
(in the future) I'll be able to easily upgrade old installations.

- Bjørn