Backport the distutils part of r83399 to fix #7645.
diff --git a/Tools/msi/msi.py b/Tools/msi/msi.py
index ae3b018..1a87a40 100644
--- a/Tools/msi/msi.py
+++ b/Tools/msi/msi.py
@@ -1019,6 +1019,8 @@
             lib.glob("*.pem")
             lib.glob("*.pck")
             lib.add_file("zipdir.zip")
+        if dir=='tests' and parent.physical=='distutils':
+            lib.add_file("Setup.sample")
         if dir=='decimaltestdata':
             lib.glob("*.decTest")
         if dir=='output':