live-build/ubuntu-core/hooks/16-ensure-uboot.chroot: we need to go into redundEnv mode to get the 5byte header that uboot uses by default, don't ask why

live-build/ubuntu-core/hooks/16-ensure-uboot.chroot

@@ -6,6 +6,13 @@ if [ "$(dpkg --print-architecture)" = "armhf" ]; then
     mkdir -p /boot/uboot
     cat > /etc/fw_env.config <<EOF
 # snappy u-boot env config
-/boot/uboot/uboot.env 0x0000 0x4000
+# its crucial that we have the two entries here
+#   u-boot/tools/env/fw_env.c 
+# will read only 4 header bytes if its a single
+# line but our header has 5 byte. by having two
+# entries like this in the config it magically
+# switches to the 5 byte header type
+/boot/uboot/uboot.env 0x0000 0x20000
+/boot/uboot/uboot.env 0x0000 0x20000
 EOF
 fi