Fix list of modules in the .app file

core/erlc.mk

@@ -191,7 +191,7 @@ endef
 ebin/$(PROJECT).app:: $(ERL_FILES) $(CORE_FILES)
 	$(if $(strip $?),$(call compile_erl,$?))
 	$(eval GITDESCRIBE := $(shell git describe --dirty --abbrev=7 --tags --always --first-parent 2>/dev/null || true))
-	$(eval MODULES := $(patsubst %,'%',$(sort $(notdir $(basename $(shell find ebin -type f -name *.beam))))))
+	$(eval MODULES := $(patsubst %,'%',$(sort $(notdir $(basename $(ERL_FILES) $(CORE_FILES))))))
 ifeq ($(wildcard src/$(PROJECT).app.src),)
 	$(app_verbose) echo $(subst $(newline),,$(subst ",\",$(call app_file,$(GITDESCRIBE),$(MODULES)))) \
 		> ebin/$(PROJECT).app