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

[MacPorts]

#67808: graph-tool 2.46 build fails on Apple Silicon
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  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):

 Good news: Simply removing {{{unary_function}}} per, e.g.
 https://stackoverflow.com/questions/63577103/what-is-an-equivalent-
 replacement-for-stdunary-function-in-c17, creates a working, compilable
 project.

 Please see https://github.com/macports/macports-ports/pull/19570

 And this code is //fast// on a Mac Studio M2 Ultra!

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Ticket URL: <https://trac.macports.org/ticket/67808#comment:7>
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