# to have a class of either DEBIAN + (STABLE or STRETCH64),
# or UBUNTU + XENIAL64.
#
+# Other notable classes:
+#
+# REPARTITION: we try to reuse partitions/filesystems to install a new
+# os into a multi-os system, if we see some basic hueristics, like the
+# right amount of them. This overrides that.
+#
+# PARTITION_PROMPT: If we don't see partitions to reuuse, prompt
+# to make sure we really want to repartition and use a completely
+# fresh install. I use this in case our repartition check has
+# a bug in it, or I accidentally set REPARTITION.
+#
# It's shell looks like this:
# if [[ ! -e /a/bin/fai/fai-wrapper ]]; then
# case $HOSTNAME in