[MacPorts] #37613: py-zmq: build fails on PPC

[MacPorts]

#37613: py-zmq: build fails on PPC
-------------------------+--------------------------------
 Reporter:  jdgleeson@…  |      Owner:  macports-tickets@…
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.1.2
 Keywords:  haspatch     |       Port:  py-zmq
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 pyzmq-2.2.0.1.tar.gz contains hard-coded `-arch i386` options that cause
 the build to fail on PPC. I've attached patch for `buildutils/detect.py`
 and the Portfile that work for me. I have also submitted an Issue report
 upstream: https://github.com/zeromq/pyzmq/issues/293

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Ticket URL: <https://trac.macports.org/ticket/37613>
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