build: can't clean a thing until it exists!?

Author: nedbat

Makefile

@@ -20,6 +20,7 @@ clean_platform:
 clean: clean_platform			## Remove artifacts of test execution, installation, etc.
 	@echo "Cleaning..."
 	@-pip uninstall -yq coverage
+	@mkdir -p build	# so the chmod won't fail if build doesn't exist
 	@chmod -R 777 build
 	@rm -rf build coverage.egg-info dist htmlcov
 	@rm -f *.bak */*.bak */*/*.bak */*/*/*.bak */*/*/*/*.bak */*/*/*/*/*.bak

howto.txt

@@ -83,6 +83,7 @@
             - wait for the new tag build to finish successfully.
         - @ https://readthedocs.org/dashboard/coverage/advanced/
             - change the default version to the new version
+- Don't forget to merge the bump-version branch
 - things to automate:
     - url to link to latest changes in docs
     - next version.py line