[MacPorts] #42725: Use modern tools for 'port pkg' on newer OS versions

[MacPorts]

#42725: Use modern tools for 'port pkg' on newer OS versions
--------------------------+--------------------------------
  Reporter:  rob@…        |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:  2.2.1
Resolution:  fixed        |   Keywords:
      Port:               |
--------------------------+--------------------------------
Changes (by jmroot):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"dd89bb80ff262bab1403da89d2d09e4a9ef32839/macports-base"
 dd89bb8/macports-base]:
 {{{
 #!ConfigurableCommitTicketReference repository="macports-base"
 revision="dd89bb80ff262bab1403da89d2d09e4a9ef32839"
 Use pkgbuild when possible

 PackageMaker.app has been removed from Xcode tools for some time, so
 use pkgbuild instead when it's available and we're building flat
 packages.

 Fixes: https://trac.macports.org/ticket/42725
 }}}

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Ticket URL: <https://trac.macports.org/ticket/42725#comment:19>
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