File include_erts.patch of Package guam-selfcontained-otp18

diff '--color=auto' -r -u -N guam-0.9.13.orig/rebar.config guam-0.9.13/rebar.config
--- guam-0.9.13.orig/rebar.config	2023-07-12 23:01:09.466682083 +0200
+++ guam-0.9.13/rebar.config	2023-07-12 23:32:44.283087476 +0200
@@ -27,7 +27,7 @@
 { cover_enabled, true }.
 { relx, [ { release, { guam, "0.9.13" }, [kolab_guam]},
                 { dev_mode, false },
-                { include_erts, false },
+                { include_erts, true },
                 { extended_start_script, true },
                 { overlay, [
                          { mkdir, "log/sasl" },