#!/usr/bin/env nix-shell
#!nix-shell -i zsh --packages nvd zsh

# sudo is used for nixos-rebuild below due to: https://github.com/NixOS/nix/issues/7154
cd /etc/nixos && \
	nix flake update && \
	cd && \
	sudo env TMPDIR=/nix/tmp nixos-rebuild switch --upgrade --show-trace && \
	echo && \
	nixos-rebuild list-generations | cat && \
	echo && \
	res=$(find /nix/var/nix/profiles -iname system-\* -type l -exec ls -ltr \{\} + | awk '{print $9}' | tail -2)

if [[ ${?} -eq 0 && $(echo -E "${res}" | wc -l) -eq 2 ]]; then
	nvd diff $(echo -E "${res}" | xargs)
fi