Add backend-path for future Pips

jaraco · pganssle · web-flow · commit dea5858f1ecf · 2019-12-29T11:59:05.000-05:00
Co-Authored-By: Paul Ganssle &lt;paul@ganssle.io&gt;
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,6 +1,7 @@
 [build-system]
 requires = ["setuptools >= 40.8", "wheel"]
 build-backend = "setuptools.build_meta"
+backend-path = ["."]
 
 [tool.towncrier]
     package = "setuptools"
