live-build-fix-shim-remove.patch

--- binary_grub-efi	2021-04-02 15:43:54.000000000 +0000
+++ binary_grub-efi_v2	2021-10-23 22:43:57.314540341 +0000
@@ -280,8 +280,12 @@
 		# Saving cache
 		Save_package_cache binary

-		# Removing depends
+		# Removing depends, some bootloader packages are marked as Protected/Important
+		# in Ubuntu, so temporarily add an apt flag to allow them to be removed
+		PRE_APT_OPTIONS="${APT_OPTIONS}"
+		APT_OPTIONS="${APT_OPTIONS} --allow-remove-essential"
 		Remove_packages
+		APT_OPTIONS="${PRE_APT_OPTIONS}"
 		;;

 	false)