contrib/packaging/wix/build.py

--- a/contrib/packaging/wix/build.py	Fri Apr 05 22:47:45 2019 -0400
+++ b/contrib/packaging/wix/build.py	Fri Apr 05 23:07:11 2019 -0400
@@ -62,6 +62,9 @@
         'version': args.version,
     }
 
+    if not os.path.isabs(args.python):
+        raise Exception('--python arg must be an absolute path')
+
     if args.extra_packages_script:
         kwargs['extra_packages_script'] = args.extra_packages_script
     if args.extra_wxs: