package phamm-ldap 0.5.15-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

Here is the error message:

Setting up phamm (0.5.15-1) ...
dpkg: error processing phamm (--configure):
 subprocess installed post-installation script returned error exit status 10

This indicates some debconf error but given the amount of similar bugs it looks like a wider issue.

I can not install phamm in a clean chroot, output with DEBCONF_DEBUG=developer:

# apt-get install phamm
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package phamm
root@top:/# vi /etc/apt/sources.list
root@top:/# apt-get update
Get:1 http://archive.ubuntu.com maverick Release.gpg [198B]
Ign http://archive.ubuntu.com/ubuntu/ maverick/main Translation-en
Ign http://archive.ubuntu.com/ubuntu/ maverick/universe Translation-en
Get:2 http://archive.ubuntu.com maverick Release [57.3kB]
Get:3 http://archive.ubuntu.com maverick/main amd64 Packages [1491kB]
Get:4 http://archive.ubuntu.com maverick/universe amd64 Packages [5771kB]
Fetched 7320kB in 11s (621kB/s)
Reading package lists... Done
root@top:/# export DEBCONF_DEBUG=developer
root@top:/# apt-get install phamm
root@top:/# apt-get install phamm
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common
  libapache2-mod-php5 libapr1 libaprutil1 libaprutil1-dbd-sqlite3
  libaprutil1-ldap libxml2 php5 php5-common php5-ldap
Suggested packages:
  www-browser apache2-doc apache2-suexec apache2-suexec-custom ufw php-pear
  apache2 php5-suhosin
Recommended packages:
  ssl-cert php5-cli xml-core phamm-ldap
The following NEW packages will be installed:
  apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common
  libapache2-mod-php5 libapr1 libaprutil1 libaprutil1-dbd-sqlite3
  libaprutil1-ldap libxml2 phamm php5 php5-common php5-ldap
0 upgraded, 14 newly installed, 0 to remove and 7 not upgraded.
Need to get 0B/8078kB of archives.
After this operation, 23.6MB of additional disk space will be used.
Do you want to continue [Y/n]?
Preconfiguring packages ...
debconf (developer): starting /tmp/phamm.config.80471 configure
debconf (developer): <-- VERSION 2.0
debconf (developer): --> 0 2.0
debconf (developer): <-- GET slapd/domain
debconf (developer): --> 10 slapd/domain doesn't exist
debconf (developer): <-- INPUT high phamm/ldap-server
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- GET phamm/ldap-server
debconf (developer): --> 0 127.0.0.1
debconf (developer): <-- INPUT high phamm/ldap-tls
debconf (developer): --> 10 "phamm/ldap-tls" doesn't exist
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- GET phamm/ldap-tls
debconf (developer): --> 10 phamm/ldap-tls doesn't exist
debconf (developer): <-- SET phamm/ldap-basedn dc=10 slapd/domain doesn't exist
debconf (developer): --> 0 value set
debconf (developer): <-- SET phamm/ldap-binddn cn=admin,dc=10 slapd/domain doesn't exist
debconf (developer): --> 0 value set
debconf (developer): <-- INPUT high phamm/ldap-binddn
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- INPUT high phamm/reconfigure-webserver
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO
debconf (developer): ...

So it appears that:

 db_get slapd/domain || true
 if [ -n "$RET" ]; then
     basedn="dc=`echo $RET | sed 's/^\.//; s/\./,dc=/g'`"
 fi

if giving:
"10 slapd/domain doesn't exist" and that results in a odd basedn variable.

This bug was fixed in the package phamm - 0.5.18-2ubuntu1

---------------
phamm (0.5.18-2ubuntu1) maverick; urgency=low

  * debian/phamm.config:
    - fix incorrect use of dh_get that causes upgrade/install failures
      with odd error messages (LP: #655518)
 -- Michael Vogt <email address hidden> Wed, 06 Oct 2010 12:02:38 +0200