[MacPorts] #56954: py-numpy: numpy.polyfit broken with +gfortran variant on High Sierra

[MacPorts]

#56954: py-numpy: numpy.polyfit broken with +gfortran variant on High Sierra
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  Reporter:  mojca     |      Owner:  michaelld
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  py-numpy  |
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Comment (by michaelld):

 I don't have `gcc8` installed yet, so I can't test with it. That said
 `py27-numpy +gcc7` works for me on 10.13 .. which is strange because the
 `+gfortran` variant has the same dependencies as `+gcc7` ... which makes
 sense because `${prefix}/bin/gfortran-mp-7` is provided by `gcc7` ... so,
 what is the difference in the `Portfile` when using the 2 variants? That
 seems to make the difference.

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Ticket URL: <https://trac.macports.org/ticket/56954#comment:21>
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