Ensure clean up of venv-pup if a previous build failed.

ntoll · ntoll · commit 3f072a968bb5 · 2021-10-03T15:50:01.000+01:00
diff --git a/make.py b/make.py
@@ -222,6 +222,7 @@ def clean():
     _rmtree("coverage")
     _rmtree("docs/build")
     _rmtree("lib")
+    _rmtree("venv-pup")
     _rmfiles(".", "*.pyc")
     return 0
 
