[Nix-dev] confusing rollback / generation system

[Vladimír Čunát]

On 05/19/2017 02:06 AM, Linus wrote:
> Yes, nix-env as root operates on the *default* profile (which applies to
> all users but is independent of nixos-rebuild) and not the *system*
> profile (which is operated on by nixos-rebuild) by default. [...]

Right, thanks, I confused those two.  Now I better understand the
original question.  I don't think "NixOS profiles" were meant to be
manipulated by nix-env.