live-build/auto/config: Add nasty hack to order gtk-common-themese snap

first in snapd's seed.yaml to work around the snapd bug in LP: #1772844

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.525.3) bionic; urgency=medium
+
+  * live-build/auto/config: Add nasty hack to order gtk-common-themese snap
+    first in snapd's seed.yaml to work around the snapd bug in LP: #1772844
+
+ -- Adam Conrad <adconrad@ubuntu.com>  Mon, 23 Jul 2018 10:02:04 -0600
+
 livecd-rootfs (2.525.2) bionic; urgency=medium
 
   * Update unminimize script text and install ubuntu-standard when

live-build/auto/config

@@ -700,7 +700,12 @@ if [ -n "${BASE_SEED}" ]; then
 		seed_snaps=$(sed -rn '1,/-----/d;/-----/,$d; s/(.*) \|.*/\1/; s, \(classic\),/classic,; p' "${file}")
 		for snap in ${seed_snaps}; do
 			echo "snap: found ${snap}"
-			ALL_SNAPS="${ALL_SNAPS:+${ALL_SNAPS} }${snap}"
+			# Reorder gtk-common-themes first due to LP: #1772844
+			if [ "${snap}" = "gtk-common-themes" ]; then
+				ALL_SNAPS="${snap}${ALL_SNAPS:+ ${ALL_SNAPS}}"
+			else
+				ALL_SNAPS="${ALL_SNAPS:+${ALL_SNAPS} }${snap}"
+			fi
 		done
 	done
 	if [ -n "${ALL_SNAPS}" ] || [ -n "${HOOK_SNAPS}" ]; then