Hardcode version string in setup.py
--- a/setup.py
+++ b/setup.py
@@ -281,7 +281,7 @@
 
 def doSetup():
     # Write version file
-    version_string = version()
+    version_string = "0.1.b2.dev15059"
     version_filename = joinpath(
         dirname(__file__), "twext", "version.py"
     )