mmdebstrap/tests/failing-customize-hook

#!/bin/sh
set -eu
export LC_ALL=C.UTF-8
ret=0
{{ CMD }} --mode=root --variant=apt --customize-hook='chroot "$1" sh -c "exit 1"' {{ DIST }} /tmp/debian-chroot {{ MIRROR }} || ret=$?
rm -r /tmp/debian-chroot
if [ "$ret" = 0 ]; then
  echo expected failure but got exit $ret >&2
  exit 1
fi