DPkg::Pre-Invoke  { "if [ -x /usr/bin/snapper ] && snapper -c root list >/dev/null 2>&1; then snapper -c root create --type pre --cleanup-algorithm number --print-number --description 'apt'; fi"; };
DPkg::Post-Invoke { "if [ -x /usr/bin/snapper ] && snapper -c root list >/dev/null 2>&1; then snapper -c root create --type post --cleanup-algorithm number --print-number --description 'apt'; fi"; };
