Unsix script added until the issue is resolved.

unsix.py

@@ -0,0 +1,27 @@
+#!/usr/bin/python3
+
+import re, os, sys
+
+def processfolder(top): 
+    for root, dirs, files in os.walk(top):
+        for f in files:
+            if f.endswith('.py'):
+                processfile(os.path.join(root, f))
+        for d in dirs:
+            processfolder(os.path.join(root, d))
+
+def processfile(fname):
+    print(fname+'... ', end='')
+    with open(fname, 'rt') as f:
+        txt = f.read()
+    txt = re.sub('import six\n', '', txt)
+    txt = re.sub(r'six\.(b\("[^"]*"\))', 
+        lambda s: 'b'+s.expand(r'\1').strip('b()'), txt)
+    txt = re.sub(r'six\.(u\("[^"]*"\))', 
+        lambda s: 'u'+s.expand(r'\1').strip('u()'), txt)
+    with open(fname, 'wt') as f:
+        f.write(txt)
+    print('done')
+
+
+processfolder(sys.argv[1])