[MacPorts] #60819: sfml fails to build on 10.6.8 due to missing method backingScaleFactor

[MacPorts]

#60819: sfml fails to build on 10.6.8 due to missing method backingScaleFactor
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  Reporter:  programmingkidx  |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  snowleopard leopard tiger
      Port:  sfml             |
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Comment (by rkitover):

 As regards {{{backingScaleFactor}}}, I'm somewhat familiar with these
 APIs.

 These are the HiDPI APIs added in 10.7.5 to support the then new "retina"
 macbook pros.

 It should be fairly easy to patch around this stuff, and just set the
 scale to 1 if the API is not available.

 It would be nice to get any patch merged upstream as well.

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Ticket URL: <https://trac.macports.org/ticket/60819#comment:8>
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