[MacPorts] #45044: Add "xctool" to ports

[MacPorts]

#45044: Add "xctool" to ports
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  Reporter:  nyriox@…  |      Owner:  ryandesign@…
      Type:  request   |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  xctool    |
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Comment (by nyriox@…):

 The process of building the command is showed here:

 https://travis-ci.org/facebook/xctool

 All the commands entered by the user are displayed after the customary "$"
 symbol.  It indicates a necessity for Ruby Version Manager and something
 called "Bundler".  Ruby, at least, can be installed using MacPorts.

 As far as where to install this, it is a Terminal command, like
 xcodebuild, which is in fact precisely what it is designed to replace.  So
 it would be installed in the standard place for such things.

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Ticket URL: <https://trac.macports.org/ticket/45044#comment:5>
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