Comment 1 for bug 258854

The way the package has been designed in Debian is to have the Plugin_CgProgramManager.so built as part of a separate source package, called ogre-contrib.
We can't build this source package due to the way the proprietary nvidia-cg-toolkit is working (see bug 254084) so we can't offer this library from our repo. As an alternative to compile it from (tarball) source, you can use our source package and compile it yourself; unfortunately until bug 254084 is fixed there is no other possible alternative.