[MacPorts] #54331: libass-0.13.7 not building on macOS 10.12.5 + Xcode 8.

[MacPorts]

#54331: libass-0.13.7 not building on macOS 10.12.5 + Xcode 8.
------------------------+--------------------
  Reporter:  ssisak     |      Owner:
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.4.1
Resolution:  duplicate  |   Keywords:
      Port:  libass     |
------------------------+--------------------

Comment (by ssisak):

 The "fix" referenced is port upgrade redline...

 I'm not sure that's correct as:
  1. This was a part of "port upgrade outdated"
  2. The error is that libreadline.6.dylib did not load
  3. That appears to be because libreadline.7.dylib is what's currently
 installed

 Not sure if I should address this here or in that ticket, but looks like a
 missing or circular dependency

--
Ticket URL: <https://trac.macports.org/ticket/54331#comment:3>
MacPorts <https://www.macports.org/>
Ports system for macOS