If possible, I went with a solution like this. It only works if you want several specific interfaces (e.g. those you have source access to) to be passed as a generic parameter, not any.
IInterface.IInterfaceIn source, it looks like this:
Any interface you want to be passed as the generic parameter:
public interface IWhatever : IInterface
{
// IWhatever specific declarations
}
IInterface:
public interface IInterface
{
// Nothing in here, keep moving
}
The class on which you want to put the type constraint:
public class WorldPeaceGenerator<T> where T : IInterface
{
// Actual world peace generating code
}