fix version tagging?

Makefile

@@ -2,14 +2,13 @@ EXTENSIONS:=embroider embroider_params embroider_simulate embroider_update
 
 # This gets the branch name or the name of the tag
 VERSION:=$(shell git describe --tags --exact-match > /dev/null 2>&1 || git symbolic-ref -q --short HEAD)
-
-TARBALL:=inkstitch-$(VERSION)-$(shell uname)-$(shell uname -m).tar.gz
-SITE_PACKAGES:=$(shell python -c "import os; print(os.path.dirname(os.__file__) + '/site-packages')")
+OS:=$(shell uname)
+ARCH:=$(shell uname -m)
 
 dist: distclean
 	bin/build-dist $(EXTENSIONS)
 	cp *.inx dist
-	cd dist; tar zcf ../$(TARBALL) *
+	cd dist; tar zcf ../inkstitch-$(VERSION)-$(OS)-$(ARCH).tar.gz *
 
 	# This is only here for debugging the build.
 	tar zcf build.tar.gz build