[DRE-maint] Bug#789212: libapache2-mod-passenger fails to install on post-install script.

[Rovanion Luckey]

Package: libapache2-mod-passenger
Version: 4.0.53-1
Severity: normal

Dear Maintainer,

   * What led up to the situation?
   
     I was upgrading our puppetmaster/foreman server from Debian 7 to 8. The upgarde didn't end up well so I ended up purging everything puppet, foreman and apache. After installing these again and running foreman-installer, as described here: http://theforeman.org/manuals/1.8/quickstart_guide.html#QuickstartGuide, I got the following error:
     
     Setting up libapache2-mod-passenger (4.0.53-1) ...
     dpkg: error processing package libapache2-mod-passenger (--configure):
      subprocess installed post-installation script returned error exit status 1
     Errors were encountered while processing:
      libapache2-mod-passenger
     E: Sub-process /usr/bin/dpkg returned an error code (1)
       

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

     I've tried running dpkg --configure libapache2-mod-passenger and dpkg-reconfigure libapache2-mod-passenger which results in the very same error.
     
   * What was the outcome of this action?

     The above error.

   * What outcome did you expect instead?

     The package to be installed.


-- System Information:
Debian Release: 8.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (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
Init: unable to detect

Versions of packages libapache2-mod-passenger depends on:
ii  apache2-bin [apache2-api-20120211]  2.4.10-10
ii  libapr1                             1.5.1-3
ii  libaprutil1                         1.5.4-1
ii  libc6                               2.19-18
ii  libgcc1                             1:4.9.2-10
ii  libstdc++6                          4.9.2-10
ii  ruby-passenger                      4.0.53-1

libapache2-mod-passenger recommends no packages.

libapache2-mod-passenger suggests no packages.

-- Configuration Files:
/etc/apache2/mods-available/passenger.conf [Errno 2] No such file or directory: u'/etc/apache2/mods-available/passenger.conf'
/etc/apache2/mods-available/passenger.load [Errno 2] No such file or directory: u'/etc/apache2/mods-available/passenger.load'

-- no debconf information