Comment 2 for bug 704155

Thanks for the report, Mike.

I should draw up a proper design for this, but I think the solution will be an alert box the same as the one for removing dependencies <https://wiki.ubuntu.com/SoftwareCenter?action=AttachFile&do=view&target=remove-depended-alert.jpg>, just with slightly different primary text: "{Title} can’t be installed unless these items are removed:".