This update was reverted just before 6.4 because of an issue with
www/jupyter-notebook:
https://marc.info/?l=openbsd-ports&m=153785226020468&w=2
Issue has been resolved by the recent update of graphics/py-matplotlib.
From Elias M. Mariani (maintainer).
py-zmq-17.1.2 breaks www/jupyter-notebook. Issue can be fixed by
updating py-ipkernel to a newer version, which does not work with the
version of py-matplotlib in ports. This can be fixed by updating
py-matplotlib to a newer version, which relies on two new ports...
For now make sure that 6.4 ships with a version of py-zmq that does not
break stuff.
OK sthen@, jca@