From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tobias Geerinckx-Rice <me@tobias.gr>
Subject: Re: Seeking guidance regarding system roll-back and switch-generation
Date: Sun, 17 Jul 2016 17:27:15 +0200
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To: Chris Marusich <cmmarusich@gmail.com>
Cc: guix-devel@gnu.org

Ahoy Chris,

Just one aside, for context:

(And to softly nudge people into the right™ direction of activation
scripts, of course. ;-)

On 2016-07-17 11:22, Chris Marusich wrote:
> However, it may not be necessary to generate a 
> "switch-to-configuration"
> script at all.  Instead, what if we just stored the operating system
> configuration file in a well known location within each system
> generation?

NixOS offers this option. I've forgot the name, because its utility is
so limited, and its main use is to confuse people on IRC.

All it does is copy /etc/nixos/configuration.nix to the store. That's
it. All your imports are now broken, if they pointed to a relative path
that doesn't exist in the store, or impure, if they pointed to an 
absolute
path that wasn't immutable. This breaks all but the most trivial (or
unmaintainable) set-ups. Even the NixOS installer creates a multi-file
configuration by default.

That no-one has bothered to script a solution probably means something.

Kind regards,

T G-R