The OpenCASCADE library is built upon X11. It doesn’t use Cocoa/Carbon. In order to be able to use the 3D viewer of pythonOCC with PyQt, you must first install Qt4-x11 and then PyQt4.7. First, from the finkproject, download/install the qt4-x11 package. You can use finkcommander, a graphical frontend to fink, to manage your fink packages. […]