[MacPorts] #62704: fftw-3 upgrade fails: must set at least one Fortran variant

[MacPorts]

#62704: fftw-3 upgrade fails: must set at least one Fortran variant
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  Reporter:  jmroot  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect  |     Status:  accepted
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  fftw-3  |
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Comment (by MarcusCalhoun-Lopez):

 Replying to [comment:4 jmroot]:
 > It seems to also prevent turning off the fortran variants. Why is that
 necessary?

 I am afraid I do not know why `require_fortran` was used instead of
 `default_fortran` in [https://github.com/macports/macports-
 ports/commit/b232f7df35fdebbdce5437edd1c3df98a2aa4fea the change]

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Ticket URL: <https://trac.macports.org/ticket/62704#comment:6>
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