>Note that this proposal:
>
>* reuses packages built for different environments (packages outputs
> stay the same between boxes, it's boxes that change),
>* doesn't generate a ton of wrappers by generating a wrapper for every
> single package,
>* gives a somewhat natural way to decide which options go where (using
> the same logic as in NixOS).
>
>I would even allow to do something like:
>
>environments.systemPackages = [
> (userEnvironment "oxij" {
> requirePackages = [ ... xmonad and other programs ... ];
> environment.home.".xsession" = ''
> ...
> exec xmonad
> '';
> })
> ];
>
>and then running
>/run/current-system/sw/bin/setup-user-environment-oxij should
>resymlink files in $HOME in the same way as nixos-rebuild switch
>resymlinks files in /etc. A killer feature I'd say.
>
>A disputable disadvantage is that a huge part of NixOS (at least
>pretty much all the services) should migrate into nixpkgs.
On the other hand, it would be a nice moment to rewrite most of the
services in an actually no-side-effect style. I can put two different
versions of Vim in a single environment with minor tricks; why not two
nginx services?
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