Clear cart when specific item added

Is there a way to clear the cart when a specific item is added?

Example... I can buy item 1, item 2, or item 3 individually, but if they added "package abc" (which contains item 1,2,3) at a discounted rate then automatically remove item 1,2,3 if they are in the cart.

There is no option for that.
It's always possible to do it if you know PHP by editing the file "cart" of the view "checkout" via the menu Display->Views and adding some custom code.