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nix-configuration/hosts/common/nixos-upgrade.sh

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#!/usr/bin/env bash
# Update NixOS system while printing out the different packages to install.
# Inspiration: https://blog.tjll.net/previewing-nixos-system-updates/
set -e
OPERATION="boot" # Which update method to use. Defaults to "boot", which applies updates on reboot.
AUTOACCEPT=false # Whether to automatically apply the update or ask for permission.
function usage() {
echo "Usage: nixos-upgrade.sh [ -y | --auto-accept ] [-o | --operation]"
echo "Options:"
echo " -h | --help Show this help screen."
echo " -y | --auto-accept Automatically approve pending changes."
echo " -o | --operation Which update operation to perform (switch, boot, etc.). Defaults to boot."
exit 2
}
while [[ $# -gt 0 ]]; do
case "$1" in
-y|-Y|--auto-accept)
AUTOACCEPT=true
shift
;;
-o|-O|--operation)
OPERATION=$2
shift
;;
-h|--help)
usage
exit
;;
*)
#echo "Unknown argument $1"
#exit 1
break
;;
esac
done
echo "Using installation mode: $OPERATION"
cd ~/Development/nix-configuration
nix flake update
nixos-rebuild build --flake .
UPDATES=$(nix store diff-closures /run/current-system ./result | awk '/[0-9] →|→ [0-9]/ && !/nixos/' || echo)
if [ "$UPDATES" ]; then
echo "NixOS updates to apply: "
echo $UPDATES
if [ $AUTOACCEPT == false ]; then
read -p "Continue with upgrade (y/n) ? " choice
case "$choice" in
y|Y|yes ) echo "Running nixos-rebuild $OPERATION :";;
n|N|no ) echo "Upgrade cancelled." && exit;;
* ) echo "Invalid option. Upgrade cancelled." && exit;;
esac
fi
sudo nixos-rebuild $OPERATION --flake .
else
echo "No NixOS updates found."
fi
echo "Updating Flatpaks:"
flatpak update