Seems that the source issue of this patch is going to be addressed upstream. This should mean that once it's addressed, the original glvnd-fix-gl-dot-pc.patch file can be dropped entirely from the debian/patches/ tree of this package.References:Note: Nothing has been accepted upstream yet. May or may not happen before 18.1.1 is released. Will update this bug if I can when this patch is no longer needed.--Stuart Young (aka Cefiar)