[Pkg-mailman-hackers] Bug#894256: mailman3 wants to take away mailman.cfg from mailman3-core

[Bjoern Franke]

Package: mailman3
Version: 3.1.1-8~bpo9+1
Severity: normal

Dear Maintainer,


2 root at srv20 /etc/mailman3 # apt-get remove mailman3-core                                                                          :(
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'mailman3-core' is not installed, so not removed
The following packages were automatically installed and are no longer required:
  linux-image-4.9.0-3-amd64 linux-image-4.9.0-4-amd64
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up mailman3 (3.1.1-8~bpo9+1) ...
dbconfig-common: writing config to /etc/dbconfig-common/mailman3.conf
dbconfig-common: flushing administrative password
ucfr: Attempt from package mailman3  to take /etc/mailman3/mailman.cfg away from package mailman3-core
ucfr: Aborting.
dpkg: error processing package mailman3 (--configure):
 subprocess installed post-installation script returned error exit status 4
dpkg: dependency problems prevent configuration of mailman3-full:
 mailman3-full depends on mailman3; however:
  Package mailman3 is not configured yet.

dpkg: error processing package mailman3-full (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 mailman3
 mailman3-full


-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'proposed-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mailman3 depends on:
ii  dbconfig-sqlite3            2.0.8
ii  debconf [debconf-2.0]       1.5.61
ii  logrotate                   3.11.0-0.1
ii  lsb-base                    9.20161125
ii  python3                     3.5.3-1
ii  python3-aiosmtpd            1.1-3~bpo9+1
ii  python3-alembic             0.8.8-2
ii  python3-dnspython           1.15.0-1
ii  python3-falcon              1.0.0-2
ii  python3-flufl.bounce        2.3-4
ii  python3-flufl.i18n          2.0.1-1~bpo9+1
ii  python3-flufl.lock          3.2-1~bpo9+1
ii  python3-lazr.config         2.1-1
ii  python3-passlib             1.7.0-2
ii  python3-psycopg2            2.6.2-1
ii  python3-public              0.5-1
ii  python3-pymysql             0.7.10-1
ii  python3-requests            2.12.4-1
ii  python3-sqlalchemy          1.0.15+ds1-1
ii  python3-zope.component      4.3.0-1
ii  python3-zope.configuration  4.0.3-3
ii  python3-zope.event          4.2.0-1
ii  python3-zope.interface      4.3.2-1
ii  ucf                         3.0036

Versions of packages mailman3 recommends:
ii  lynx                            2.8.9dev11-1
ii  postfix [mail-transport-agent]  3.1.8-0+deb9u1

Versions of packages mailman3 suggests:
pn  mailman3-doc                                              <none>
pn  postgresql | default-mysql-server | virtual-mysql-server  <none>

-- debconf information:
  mailman3/config_hyperkitty:
  mailman3/pgsql/manualconf:
  mailman3/mysql/method: Unix socket
  mailman3/db/basepath: /var/lib/mailman3/data
  mailman3/db/app-user: mailman3 at localhost
* mailman3/dbconfig-install: false
  mailman3/database-type:
  mailman3/purge: false
  mailman3/dbconfig-reinstall: false
  mailman3/dbconfig-upgrade: true
  mailman3/internal/skip-preseed: false
  mailman3/remote/host: localhost
  mailman3/remote/newhost:
  mailman3/dbconfig-remove: true
  mailman3/mysql/admin-user:
  mailman3/pgsql/authmethod-admin: ident
  mailman3/pgsql/changeconf: false
  mailman3/pgsql/authmethod-user: password
  mailman3/pgsql/admin-user: postgres
  mailman3/install-error: abort
  mailman3/pgsql/method: TCP/IP
  mailman3/remove-error: abort
  mailman3/passwords-do-not-match:
  mailman3/db/dbname: mailman3
  mailman3/upgrade-error: abort
  mailman3/remote/port:
  mailman3/upgrade-backup: true
  mailman3/pgsql/no-empty-passwords:
  mailman3/missing-db-package-error: abort
  mailman3/init_service_failed:
  mailman3/internal/reconfiguring: false