title: Software requires older version of currently installed package
body: <p>I'm trying to compile a program on linux and it's complaining that "qt 4.8.6 is not supported, use qt 4.2 or 4.3 instead". I'd just uninstall my current version and get the preferred one, however I don't know if I have other software that requires the current version of qt. </p>
  
  <p>Is there a way to get this program to compile and run without uninstalling the current version of qt? </p>
  
  <p>Also related question: Let's say there's some package called QT Helper that builds on QT. If that package is also used by the software that requires QT 4.3, do I need to get a version of QT Helper made for QT 4.3, or will it just interface with any QT4 version seamlessly? I guess that might just depend on the packages in question.</p>