Forum OpenACS Q&A: Help with OpenACS4 on OpenBSD 3.0

I'm trying to get OpenACS running on OpenBSD 3.0, but the installer keeps barfing. There are a couple of posts here from folks running on 2.7 / 2.9, and I was wondering if there was anything special needed to make this combination work...

What I'm seeing is the kernel datamodel install dying like so:

[30/Nov/2001:15:53:19][2658.5905408][-conn0-] Error: Error 
sourcing 
/web/openacs4/packages/acs-bootstrap-installer/installer/install
-data-model.tcl:
error reading "file18": interrupted system call
    while executing
"gets $fp line"
    (procedure "db_source_sql_file" line 42)
    invoked from within
"db_source_sql_file -callback apm_ns_write_callback 
"acs-kernel-create.sql""
    (file 
"/web/openacs4/packages/acs-bootstrap-installer/installer/instal
l-data-model.tcl" line 31)
    invoked from within
"source $__file "

Another odd thing is that nsd won't respond to a SIGTERM, I need to SIGQUIT or SIGKILL to kill it

I'm running a custom kernel with SEMMNI and SEMMNS set as suggested in the postgresql README.OpenBSD, but the same symptoms exist under a stock GENERIC kernel. Importing acs-kernel-create.sql runs fine from the command line, and I haven't yet delved into db_source_sql_file to see where else it could be going wrong.

Any clues from other OpenBSD users? Does this work fine on 2.9 systems?