Another attempt

Signed-off-by: Matteo Cafasso <noxdafox@gmail.com>

Makefile

@@ -16,25 +16,28 @@ elixir_srcs  := mix.exs
 # which is not managed by erlang.mk.
 # We need to instruct the `rabbitmq-dist:do-dist` target to not
 # remove our plugin and related dependencies.
-ELIXIR_VERSION  := $(shell elixir --version | grep Elixir | cut -d ' ' -f 2)
-PROJECT_VERSION := $(shell git describe --tags --abbrev=0)
-EXTRA_DIST_EZS  := plugins/elixir-$(ELIXIR_VERSION).ez plugins/$(PROJECT)-$(PROJECT_VERSION).ez
+ELIXIR_ARCHIVE  = $(shell ls plugins/elixir-*.ez)
+PROJECT_ARCHIVE = $(shell ls plugins/$(PROJECT)-*.ez)
+EXTRA_DIST_EZS  = $(ELIXIR_ARCHIVE) $(PROJECT_ARCHIVE)
 
 app:: $(elixir_srcs) deps
 	$(MIX) make_app
 
 dist:: app
+	mkdir -p $(DIST_DIR)
 	$(MIX) make_archives
 	cp -r _build/$(MIX_ENV)/archives/elixir-*.ez $(DIST_DIR)
 	cp -r _build/$(MIX_ENV)/archives/$(PROJECT)-*.ez $(DIST_DIR)
 
-test-build::
+test-build:: app
+	mkdir -p $(DIST_DIR)
 	$(MIX) make_archives
 	cp -r _build/$(MIX_ENV)/archives/elixir-*.ez $(DIST_DIR)
 	cp -r _build/$(MIX_ENV)/archives/$(PROJECT)-*.ez $(DIST_DIR)
 
 tests:: $(elixir_srcs) deps
 	MIX_ENV=test $(MIX) make_tests
+	echo $(EXTRA_DIST_EZS)
 
 clean::
 	@rm -fr _build