> Unpredictable command times. As a novice Nix user, I would say that I've hit a certain amount of this too. Basically every time you update your channel, it's

> Unpredictable command times. As a novice Nix user, I would say that I've hit a certain amount of this too. Basically every time you update your channel, it's a dice roll how much you're going to have to rebuild or re-download. Now, it's easy to let it run in the background or interrupt/resume it at any time, so that at least is a plus— and it does provide a clear indication of how much it's downloading, and how many packages are being built.