=== modified file 'functions/build-dir-from-image'
--- functions/build-dir-from-image	2017-12-08 08:00:17 +0000
+++ functions/build-dir-from-image	2017-12-06 19:34:01 +0000
@@ -13,16 +13,16 @@
 vars[fstab]+="$src:A	${vars[build_dir]:A}	$fstype	$mount_opts	0 0
 "
 
-#while grep -q "^[^ ]\\+ ${vars[build_dir]:A} " /proc/mounts; do
-#	umount ${vars[build_dir]:A} || die "Failed to umount ${(qqq)vars[build_dir]}"
-#done
-#
-#local remove
-#[[ -e $vars[build_dir] ]] && remove+=( $vars[build_dir]/*(DN) )
-#if (($#remove)); then
-#	rm -rf $remove \
-#		|| die "Failed to clean build directory ${(qqq)vars[build_dir]}"
-#fi
+while grep -q "^[^ ]\\+ ${vars[build_dir]:A} " /proc/mounts; do
+	umount ${vars[build_dir]:A} || die "Failed to umount ${(qqq)vars[build_dir]}"
+done
+
+local remove
+[[ -e $vars[build_dir] ]] && remove+=( $vars[build_dir]/*(DN) )
+if (($#remove)); then
+	rm -rf $remove \
+		|| die "Failed to clean build directory ${(qqq)vars[build_dir]}"
+fi
 mkdir -p $vars[build_dir] \
 	|| die "Failed to create build directory ${(qqq)vars[build_dir]}"