--- /dev/null
+#! /bin/bash
+
+# https://lists.uni-koeln.de/pipermail/linux-fai/2016-July/011398.html
+# In Ubuntu 16.04 (but not 14.04), the locales configuration mechanism has
+# changed. There is a /var/lib/dpkg/info/locales.config file, which
+# overrides /var/lib/dpkg/info/locales.postinst and consults
+# /var/lib/locales/supported.d/local instead of the debconf system. (See
+# the code in /usr/share/debconf/frontend that prefers locales.config.) This
+# hook applies the debconf setting. It must run after FAI's debconf task
+# but before dpkg gets a chance to clobber debconf with an empty setting.
+
+if [ ! -f "$target/var/lib/locales/supported.d/local" ]; then
+ $ROOTCMD debconf --owner=locales sh -c '
+ . /usr/share/debconf/confmodule
+ db_version 2.0
+ db_get locales/locales_to_be_generated &&
+ mkdir -p /var/lib/locales/supported.d &&
+ echo "$RET" > /var/lib/locales/supported.d/local' &&
+ $ROOTCMD dpkg-reconfigure locales
+fi