I’ve done some
nix0s-rebuild switches. Now I want to understand what I changed in my
configuration.nix, but based on See changes between two generations there isn’t a way to see what the previous configuration was so I can see the difference.
Or is there a way?
I haven’t used a VCS to track changes to
configuration.nix, so I’m not sure which change caused my brightness keys not to work. Maybe, I just need to reboot after the last
switch as I haven’t done that yet, but anyways, it would be useful to see the full configuration for each generation (and thus be able to diff parts of it against my current).
This seems like it would be a generally useful feature for such a system as Nix/NixOS, and would greatly complement the existing feature set: being able to rollback an update is helpful, but the part that is lacking is being able to continue forward from the rollback point with understanding of what went wrong.