#!/bin/sh -eux
-sudo nixos-rebuild switch --flake "${0%/*}"/ "$@"
-sudo nix-env --delete-generations +2 --profile /nix/var/nix/profiles/system
+cd "${0%/*}"
+chmod -R g-rwx,o-rwx "$PWD/private/root"
+trap 'git reset private/root private/hosts/*/root' EXIT
+git rm -rf --cached --ignore-unmatch private/root private/hosts/*/root # prevent copying to /nix/store
+sudo ln -sfn "$PWD/private/root" /root/private
+# To build offline, use: --offline
+sudo time nixos-rebuild switch --flake . "$@"
+sudo nix-env --delete-generations 7d --profile /nix/var/nix/profiles/system