When I try to install openchange-ocsmanager, aptitude complains about a not-resolveable dependency problem - see below:

0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 79.6 kB of archives. After unpacking 127 kB will be used.
The following packages have unmet dependencies:
openchange-ocsmanager : Depends: python-ocsmanager (= 1:2.0.r3669-1~inverse1.0) but it is not going to be installed.
The following actions will resolve these dependencies:

 Keep the following packages at their current version:

1) openchange-ocsmanager [Not Installed]

This error existed in the latest 2.2.15 builds as well as in the latest 2.2.16 nightly build.

The package python-ocsmanager available is version 2.2.5 (aptitude want's an older version).

I am using the following repositories:

deb http://ftp.de.debian.org/debian wheezy main
deb-src http://ftp.de.debian.org/debian wheezy main

deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main

deb http://ftp.de.debian.org/debian/ wheezy-updates main
deb-src http://ftp.de.debian.org/debian/ wheezy-updates main

deb http://http.debian.net/debian wheezy-backports main

deb http://inverse.ca/debian wheezy wheezy
deb http://inverse.ca/debian-nightly wheezy wheezy