[build] Refactor Makefile

Makefile

@@ -1,31 +1,48 @@
-NAME=asciinema
-VERSION=`python3 -c "import asciinema; print(asciinema.__version__)"`
+NAME    := asciinema
+VERSION := $(shell python3 -c "import asciinema; print(asciinema.__version__)")
 
-test: test-unit test-integration
+.PHONY: test
+test: test.unit test.integration
 
-test-unit:
+.PHONY: test.unit
+test.unit:
 	nosetests
 
-test-integration:
+.PHONY: test.integration
+test.integration:
 	tests/integration.sh
 
+.PHONY: release
 release: test tag push
 
-release-test: test push-test
+.PHONY: release.test
+release.test: test push.test
 
-tag:
-	git tag | grep "v$(VERSION)" && echo "Tag v$(VERSION) exists" && exit 1 || true
+.PHONY: .tag.exists
+.tag.exists:
+	@git tag \
+		| grep -q "v$(VERSION)" \
+		&& echo "Tag v$(VERSION) exists" \
+		&& exit 1
+
+.PHONY: tag
+tag: .tag.exists
 	git tag -s -m "Releasing $(VERSION)" v$(VERSION)
 	git push origin v$(VERSION)
 
-push:
-	python3 -m pip install --user --upgrade --quiet twine
-	python3 setup.py sdist bdist_wheel
+
+.PHONY: .pip
+.pip:
+	python3 -m pip install --user --upgrade --quiet build twine
+
+build:
+	python3 -m build .
+
+.PHONY: push
+push: .pip build
 	python3 -m twine upload dist/*
 
-push-test:
-	python3 -m pip install --user --upgrade --quiet twine
-	python3 setup.py sdist bdist_wheel
+.PHONY: push.test
+push.test: .pip build
 	python3 -m twine upload --repository testpypi dist/*
 
-.PHONY: test test-unit test-integration release release-test tag push push-test