pbulk hangs at resolving stage

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hi,
on a NetBSD-current system, using pkgsrc-current, pbulk hangs at the
resolving stage:
pbulk-scan: Duplicate package: websvn-1.61nb8
pbulk-scan: Duplicate package: websvn-1.61nb8
pbulk-scan: Duplicate package: zope25-Photo-1.2.3nb8
pbulk-scan: Duplicate package: zope25-Photo-1.2.3nb8
pbulk-scan: Duplicate package: zopeedit-0.7nb1
pbulk-scan: Duplicate package: zopeedit-0.7nb1
Resolving...

and nothing more. The system is completely idle. ps shows that there
is no pkgsrc-related processes running any more:
USER      PID %CPU %MEM  VSZ  RSS TTY     STAT STARTED    TIME COMMAND
root        0  0.0  1.7    0 8688 ?       DKl  10:01AM 0:05.56 [system]
root        1  0.0  0.2   44 1132 ?       Is   10:01AM 0:01.73 init 
root       34  0.0  0.3  384 1448 ?       Rs   10:02AM 0:00.81 SCREEN -R -d 
(screen-4.0.3)
root      106  0.0  0.2   72 1104 ?       Ss   10:01AM 0:00.04 
/usr/sbin/syslogd -s 
root      212  0.0  1.0  904 5408 ?       Ss   10:01AM 0:01.01 /usr/sbin/ntpd 
-A -b -p /var/run/ntpd.pid 
root      222  0.0  0.2   28  952 ?       Is   10:01AM 0:00.00 /usr/sbin/powerd 
root      237  0.0  0.4  284 2076 ?       Is   10:01AM 0:00.05 /usr/sbin/sshd 
root      314  0.0  0.2   60 1140 ?       I    10:01AM 0:00.01 
/usr/libexec/getty Pc ttyE2 
root      334  0.0  0.5  156 2364 ?       Ss   10:01AM 0:00.09 
/usr/libexec/postfix/master 
postfix   341  0.0  0.5  264 2440 ?       S    10:01AM 0:00.04 qmgr -l -t unix 
-u 
root      343  0.0  0.2   56 1048 ?       Is   10:01AM 0:00.00 /usr/sbin/inetd 
-l 
root      349  0.0  0.2   56 1048 ?       Is   10:01AM 0:00.04 /usr/sbin/cron 
root      357  0.0  0.9  344 4572 ?       Is   10:02AM 0:00.04 sshd: bouyer 
[priv] 
root      360  0.0  0.2   60 1140 ?       I    10:01AM 0:00.02 
/usr/libexec/getty Pc ttyE1 
root      363  0.0  0.2   60 1140 ?       I    10:01AM 0:00.01 
/usr/libexec/getty Pc ttyE3 
bouyer    368  0.0  0.6  344 3376 ?       S    10:02AM 0:01.32 sshd: 
bouyer@ttyp 0 
postfix  1735  0.0  0.5  208 2416 ?       I     3:01PM 0:00.01 pickup -l -t 
unix -u 
bouyer    364  0.0  0.4 1168 2280 ttyp0   Is   10:02AM 0:00.04 -tcsh 
bouyer    393  0.0  0.3  380 1452 ttyp0   I+   10:02AM 0:00.08 screen -R -d 
(screen-4.0.3)
bouyer    315  0.0  0.4 1092 2092 ttyp1   Is   10:02AM 0:00.02 -usr/pkg/bin/tcsh
root      403  0.0  0.3  240 1328 ttyp1   I    10:02AM 0:00.03 ksh 
root      412  0.0  0.4 1164 2184 ttyp1   S    10:02AM 0:00.04 -csh (tcsh)
root    21820  0.0  0.2   72 1080 ttyp1   R+    3:06PM 0:00.00 ps -axuww 
root    22049  0.0  0.0  148   48 ttyp1   R+    3:06PM 0:00.00 less 
root      326  0.0  0.2   52 1156 xencons Is+  10:01AM 0:00.00 
/usr/libexec/getty Pc console 

Any idea what could going on ? WHIW, pbulk is started with the following
script:
rm -rf /usr/sandbox-current/usr/pkg/* /usr/sandbox-current/var/db/pkg/* 
/usr/sandbox-current/tmp/*  /usr/sandbox-current/usr/pkgsrc/packages/*.asc
chroot /usr/sandbox-current /bin/csh
unsetenv http_proxy ftp_proxy LC_CTYPE
setenv FTPMODE active
uname -a
cd /usr/pkgsrc/mk/bulk
limit cputime 1800
/usr/pkg_bulk/bin/bulkbuild >& /var/tmp/build.log < /dev/null &


I found no code dump. /bulklog/meta/presolve is empty;
/bulklog/meta/presolve.log doesn't show anything obvious.
Any idea where to look at ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--