Description: Allow base system downgrades.
Author: Adam Conrad <adconrad@ubuntu.com>

--- live-build-3.0~a57.orig/scripts/build/lb_chroot_archives
+++ live-build-3.0~a57/scripts/build/lb_chroot_archives
@@ -564,8 +564,8 @@ EOF
 			rm -rf chroot/var/cache/apt/*.bin
 
 			Apt chroot update
-			Apt chroot "upgrade"
-			Apt chroot "dist-upgrade"
+			Apt chroot "--force-yes" "upgrade"
+			Apt chroot "--force-yes" "dist-upgrade"
 
 			if [ "${LB_CACHE_INDICES}" = "true" ]
 			then