[MacPorts] #67808: graph-tool 2.46 build fails on Apple Silicon

[MacPorts]

#67808: graph-tool 2.46 build fails on Apple Silicon
----------------------------+--------------------
  Reporter:  essandess      |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:  arm64
      Port:  py-graph-tool  |
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Comment (by essandess):

 Thanks! I tried adding an explicit

 {{{
 boost.version 1.81
 }}}

 to both the {{{py-graph-tool}}} and its dependent {{{cgal5}}} port, but
 these {{{unary_function}}} error still appear because they're in the
 graph-tool code.

 Is there a way of specifying another compiler that uses
 {{{unary_function}}}?

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Ticket URL: <https://trac.macports.org/ticket/67808#comment:3>
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