lists: migrate3x: add tos3to4 to migration

lists/migrate3x.lua.m4

@@ -29,15 +29,31 @@ if not version_match or not self_version or version_match(self_version, "<63.0")
 
 	Package('updater-ng', {
 		replan = 'immediate',
-		deps = { 'libgcc' }
+		deps = { 'libgcc', 'tos3to4-early' }
 	})
 	--[[
 	Updater package does not depend on libgcc but it requires it and dependency
 	breaks otherwise.
+
+	We added additional dependency in form of package tos3to4-early which contains
+	script to migrate updater configuration. That means that when new updater is
+	being installed the configuration is also migrated at the same time.
 	]]
 
 end
 
--- We are potentially migrating from uClibc so reinstall everything depending
--- on it.
---Package("libc", { abi_change_deep = true })
+--[[
+This same package as in Turris OS 3.x which contains script pulling in this
+script. The difference is that Turris OS 4.x contains version 2.x of this package
+to ensure update and that it does not contain noted script. Instead it contains
+script migrating system configuration. That way configuration is updated and at
+the same time this script is left out of all following updater executions because
+tos3to4 is going to be removed.
+]]
+Install("tos3to4")
+Package("tos3to4", { replan = "later" })
+
+--[[
+We are potentially migrating from uClibc so reinstall everything depending on it.
+]]
+Package("libc", { abi_change_deep = true })