[PEAK] Problem with DB connection via domain socket

[Stephen C. Waterbury]

PEAK's wrapper for psycopg doesn't appear to allow connection
to the database via a domain socket without a password:

   File "/usr/local/lib/python2.3/site-packages/peak/storage/SQL.py", line 464, in _open
     return self.API.connect(
TypeError: argument 3 must be string, not None

... even though psycopg understands that it doesn't need one:

[waterbug at beeblebrox bulletins]$ python
Python 2.3.3 (#1, Dec 24 2003, 12:01:08)
[GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import psycopg
 >>> conn = psycopg.connect(database='bulletins', user='waterbug')
 >>>

Where should I go to modify this behavior?

Thanks!
Steve