[MacPorts] #70137: gtk4: "No provider of glGenSamplers found" error on older systems

[MacPorts]

#70137: gtk4: "No provider of glGenSamplers found" error on older systems
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  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.9.3
Resolution:                |   Keywords:
      Port:  gtk4          |
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Comment (by kencu):

 I maintained portfile overlays for 10,4 and 10.5 for some years, until I
 lost interest and moved those machines to linux. Nobody else took over
 when I stopped doing it, but they could easily enough.

 We have been hoping you would maintain an overlay for your 10.6-ppc
 interest for a long time now.

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Ticket URL: <https://trac.macports.org/ticket/70137#comment:11>
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