[MacPorts] #57868: Dependency 'py37-apptools' not found for installing py37-mayavi

[MacPorts]

#57868: Dependency 'py37-apptools' not found for installing py37-mayavi
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  Reporter:  bernard-giroux  |      Owner:  jjstickel
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.5.4
Resolution:                  |   Keywords:
      Port:  py-mayavi       |
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Comment (by jjstickel):

 Hi, I'm pretty busy right now. This should be an easy fix. Just add `37`
 to the `python.versions` line in the Portfile, like so:

 {{{
 python.versions     27 35 36 37
 }}}

 If it works for you, and you are able to create a PR, that would be great.
 Otherwise I'll get to it when I can.

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Ticket URL: <https://trac.macports.org/ticket/57868#comment:2>
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