[web2py] Fails with pypy , anyone successful?

[Phyo Arkar]

I got this error . when i browse welcome app. I am using 1.98.2

Traceback (most recent call last):
  File "/home/v3ss/web2py-src/web2py/gluon/main.py", line 485, in wsgibase
    serve_controller(request, response, session)
  File "/home/v3ss/web2py-src/web2py/gluon/main.py", line 188, in
serve_controller
    environment = build_environment(request, response, session)
  File "/home/v3ss/web2py-src/web2py/gluon/compileapp.py", line 269,
in build_environment
    __builtins__['__import__'] = __builtin__.__import__
TypeError: 'module' object does not support item assignment