Add ELIXIR_PATCH=1 when testing building packages

test/Makefile

@@ -167,7 +167,7 @@ $(eval $(foreach t,$(patsubst %.mk,%,$(patsubst plugin_%,%,$(wildcard plugin_*.m
 # Packages.
 
 PACKAGES = $(foreach pkg,$(sort $(wildcard ../index/*.mk)),$(notdir $(basename $(pkg))))
-PATCHES = HUT_PATCH=1
+PATCHES = ELIXIR_PATCH=1 HUT_PATCH=1
 EXCLUDE_FROM_CHECK = ['ci.erlang.mk', elvis_mk, esh_mk, hexer_mk, inaka_mk, 'lfe.mk', pmod_transform, rust_mk]
 EXCLUDE_FROM_APP_CHECK = esh_mk pmod_transform rust_mk