ssh gum.i -o StrictHostKeyChecking=no

mount /dev/mapper/nixos-root /mnt
mount /dev/sda2 /mnt/boot

chroot-prepare /mnt
chroot /mnt /bin/sh


journalctl  -D /mnt/var/log/journal --since today # find the active system (or check grub)
# ... activating ...

export PATH=/nix/store/9incs5sfn7n1vh1lavgp95v761nh11w3-nixos-system-nextgum-18.03pre-git/sw/bin
/nix/store/9incs5sfn7n1vh1lavgp95v761nh11w3-nixos-system-nextgum-18.03pre-git/activate
/nix/store/9incs5sfn7n1vh1lavgp95v761nh11w3-nixos-system-nextgum-18.03pre-git/sw/bin/nixos-rebuild