[MacPorts] #39836: when xcode license was not accepted there should be a helpful error message

[MacPorts]

#39836: when xcode license was not accepted there should be a helpful error message
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  Reporter:  fabian@…     |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:  2.1.3
Resolution:               |   Keywords:
      Port:               |
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Comment (by ryandesign@…):

 What method would you propose MacPorts use to determine 1) if the
 installed version of Xcode has a license that must be accepted at the
 command line (old versions didn't), and 2) if so, whether or not it has
 been accepted?

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Ticket URL: <https://trac.macports.org/ticket/39836#comment:3>
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