Bug#742668: cups: Fails to install because can't listen to sockets

[Wojciech Margas <wmargas@interia.pl>]

Hi OdyX,

I upgraded cups from sid to version 1.7.1-12, and now printing is 
working. Also all the cups links to /dev/null in /etc/systemd/system/ 
have disappeared, now it looks like:

/etc/systemd/system/cups.socket.d$ ls -al
total 12
drwxr-xr-x 2 root root 4096 Apr  1 19:27 .
drwxr-xr-x 8 root root 4096 Mar 31 19:21 ..
lrwxrwxrwx 1 root root   39 Apr  1 07:30 cupsd-listen.conf -> 
../../../cups/cupsd-systemd-listen.conf
-rw-r--r-- 1 root root  687 Mar 29 19:51 cupsd-listen.conf~

However, cups-daemon still cannot finish post-install configuration:

dselect
running dpkg --pending --configure ...
Setting up cups-daemon (1.7.1-12) ...
gzip: /var/log/cups/error_log.1: No such file or directory
dpkg: error processing package cups-daemon (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of cups:
 cups depends on cups-daemon (>= 1.7.1-12); however:
  Package cups-daemon is not configured yet.

dpkg: error processing package cups (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of cups-core-drivers:
 cups-core-drivers depends on cups-daemon (>= 1.7.1-12); however:
  Package cups-daemon is not configured yet.

dpkg: error processing package cups-core-drivers (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 cups-daemon
 cups
 cups-core-drivers

dselect: warning: subprocess dpkg --configure returned error exit status 1
Press <enter> to continue.

Thank you for fixing CUPS. Although it cannot finish configuration, CUPS 
is fully functional again.

Wojciech