Since qhull is at version 8, there is no longer a conflict with other ports. While here, since both of these issue are closed https://github.com/PointCloudLibrary/pcl/issues/2642 https://gitlab.kitware.com/vtk/vtk/issues/17444 With an update to vtk9 (instead of vtk8) can we have an exp-run with both QT and VTK option enabled (and not marked as broken) ? Thank you in advance.