Bug#691950: exim4-daemon-light: if user uucp doesn't exist, installation fails ungracefully

[Marcos Marado]

Package: exim4-daemon-light
Version: 4.72-6+squeeze3
Severity: important


On a squeeze machine without uucp user, exim4-daemon-light fails to install:

# aptitude install exim4-daemon-light
The following NEW packages will be installed:
  exim4-daemon-light 
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/549 kB of archives. After unpacking 1,065 kB will be used.
Preconfiguring packages ...              
Selecting previously deselected package exim4-daemon-light.
(Reading database ... 59544 files and directories currently installed.)
Unpacking exim4-daemon-light (from .../exim4-daemon-light_4.72-6+squeeze3_i386.deb) ...
Processing triggers for man-db ...
Setting up exim4-daemon-light (4.72-6+squeeze3) ...
Starting MTA:2012-10-31 16:10:22 Exim configuration error in line 172 of /var/lib/exim4/config.autogenerated.tmp:
  user uucp was not found
Invalid new configfile /var/lib/exim4/config.autogenerated.tmp, not installing 
/var/lib/exim4/config.autogenerated.tmp to /var/lib/exim4/config.autogenerated
invoke-rc.d: initscript exim4, action "start" failed.
dpkg: error processing exim4-daemon-light (--configure):
 subprocess installed post-installation script returned error exit status 1
configured to not write apport reports
                                      Errors were encountered while processing:
 exim4-daemon-light
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up exim4-daemon-light (4.72-6+squeeze3) ...
Starting MTA:2012-10-31 16:10:25 Exim configuration error in line 172 of /var/lib/exim4/config.autogenerated.tmp:
  user uucp was not found
Invalid new configfile /var/lib/exim4/config.autogenerated.tmp, not installing 
/var/lib/exim4/config.autogenerated.tmp to /var/lib/exim4/config.autogenerated
invoke-rc.d: initscript exim4, action "start" failed.
dpkg: error processing exim4-daemon-light (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 exim4-daemon-light



-- System Information:
Debian Release: 6.0.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-bpo.5-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages exim4-daemon-light depends on:
ii  debconf [debconf-2.0]   1.5.36.1         Debian configuration management sy
ii  exim4-base              4.72-6+squeeze3  support files for all Exim MTA (v4
ii  libc6                   2.11.3-4         Embedded GNU C Library: Shared lib
ii  libdb4.8                4.8.30-2         Berkeley v4.8 Database Libraries [
ii  libgnutls26             2.8.6-1+squeeze2 the GNU TLS library - runtime libr
ii  libpcre3                8.02-1.1         Perl 5 Compatible Regular Expressi

exim4-daemon-light recommends no packages.

exim4-daemon-light suggests no packages.

-- debconf information excluded