promoted pysetup3 to a top-level script
diff --git a/setup.py b/setup.py
index 9d46425..fa42191 100644
--- a/setup.py
+++ b/setup.py
@@ -1889,7 +1889,7 @@
           # check the PyBuildScripts command above, and change the links
           # created by the bininstall target in Makefile.pre.in
           scripts = ["Tools/scripts/pydoc3", "Tools/scripts/idle3",
-                     "Tools/scripts/2to3"]
+                     "Tools/scripts/2to3", "Tools/scripts/pysetup3"]
         )
 
 # --install-platlib