I’ve been searching for a way to do this, but I haven’t found anything. After I have refactored my Home Manager configuration is there a way I can test the changes in a shell before I switch?
From what I understand the next-best option is to switch, and then find and run the activate script of the previous generation to switch back.
It’d be pretty neat if hm could populate a temporary directory and open a shell where
$HOMEis that temp dir but I don’t think it can.As for rollbacks, see https://nix-community.github.io/home-manager/index.html#sec-usage-rollbacks