psql inability to select a socket

As some of you know, OpenBSD 3.3 chroots apache. So I'm running the 
postmaster with its socket in /var/www/tmp. However, psql doesn't allow 
me to specify a socket to point at:

Connection options:  -h HOSTNAME     specify database server host (default: local socket)  -p PORT         specify
databaseserver port (default: 5432)  -U NAME         specify database user name (default: alex)  -W              prompt
forpassword (should happen automatically)
 

Could this be included in the next version?

Thanks,
alex