dev: add makefile with vendor/sync target

Makefile

@@ -0,0 +1,26 @@
+MAKEFILE_PATH                   := $(abspath $(lastword $(MAKEFILE_LIST)))
+ROOT_DIR                        := $(patsubst %/,%,$(dir $(MAKEFILE_PATH)))
+
+VENDOR_SRC                      := $(ROOT_DIR)/vendors
+VENDOR_DIR                      := $(ROOT_DIR)/poetry/core/_vendor
+POETRY_BIN                      ?= $(shell which poetry)
+
+
+.PHONY: vendor/lock
+vendor/lock:
+    # regenerate lock file
+	@pushd $(VENDOR_SRC) && $(POETRY_BIN) lock
+
+	# regenerate vendor.txt file (exported from lockfile)
+	@pushd $(VENDOR_SRC) && $(POETRY_BIN) export --without-hashes \
+			| egrep -v "(importlib|zipp)" \
+			| sort > $(VENDOR_DIR)/vendor.txt
+
+
+.PHONY: vendor/sync
+vendor/sync: | vendor/lock
+	# vendor packages
+	@vendoring sync
+
+	# strip out *.pyi stubs
+	@find "$(VENDOR_DIR)" -type f -name "*.pyi" -exec rm {} \;