[MacPorts] #56525: py27-spyder upgrade error

[MacPorts]

#56525: py27-spyder upgrade error
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  Reporter:  dershow      |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  py27-spyder  |
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Comment (by eborisch):

 Unfortunately there is no facility (unless it's new and I missed it) in
 MacPorts to ensure that a dependency has been installed with particular
 variant beyond the technique already in place here.

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Ticket URL: <https://trac.macports.org/ticket/56525#comment:2>
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