[MacPorts] #56016: make test uses the installed version of MacPorts, not the just-built one

[MacPorts]

#56016: make test uses the installed version of MacPorts, not the just-built one
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  Reporter:  ryandesign  |      Owner:
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.4.99
Resolution:              |   Keywords:
      Port:              |
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Comment (by neverpanic):

 Yes, I'm well aware of that. Unfortunately it's hard to test a non-
 installed version of MacPorts. I have not yet found a good solution.

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Ticket URL: <https://trac.macports.org/ticket/56016#comment:1>
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