Can I have a set of recommended packages in my package?
Let's say I am building package1. This recommends package2, package3 and package4, but all of them need to be installed in order to provide a specific functionality!
For example, it would be no use for the user to install only the recommended packages package2 and package3 without the package4.
How can I tell it at debian/control that these recommended packages have immediate relation between them and cannot be installed separately?