=========================================================================== $NetBSD: MESSAGE,v 1.1 2019/06/16 13:11:34 adam Exp $ MatPlotLib can use additional user interface backends. For GTK3-base backends, install devel/py-gobject3 and x11/gtk3 packages. For Qt5-base backends, install x11/py-qt5 package. For Tk-base backends, install x11/py-Tk package. ===========================================================================