[MacPorts] #58869: ispc @1.11.0: fatal error: 'type_traits' file not found

[MacPorts]

#58869: ispc @1.11.0: fatal error: 'type_traits' file not found
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  Reporter:  ryandesign  |      Owner:  tenomoto
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  ispc        |
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Comment (by ryandesign):

 The new compiler selection logic in MacPorts base has been released, but
 also a new ispc-clang subport exists which apparently the ispc port is now
 supposed to be using ([ticket:60672 but doesn't actually appear to be
 using]). We will need to see what happens on the 10.7 or 10.8 buildbot
 worker after [ticket:60671 ispc-clang is fixed] so that it can build and
 so that it is used.

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Ticket URL: <https://trac.macports.org/ticket/58869#comment:9>
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