[MacPorts] #57643: pulseaudio: Examine gtk3 dependency

[MacPorts]

#57643: pulseaudio: Examine gtk3 dependency
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 Reporter:  ryandesign  |      Owner:  Ionic
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  pulseaudio
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 pulseaudio declares a library dependency on gtk3 (unless the minimal
 variant is used). Is this really necessary? I see that it is using gtk3
 headers at build time, but it does not appear to link to gtk3 libraries.
 Would a build dependency be sufficient, or does it somehow still use gtk3
 files at runtime?

 I ask because pulseaudio's gtk3 dependency is the only remaining reason
 why wine eventually depends on harfbuzz. wine must build universal, and as
 of version 2, for the moment
 [https://github.com/harfbuzz/harfbuzz/issues/1308 harfbuzz cannot build
 universal anymore]. So at present I cannot update harfbuzz in MacPorts to
 version 2 without making wine unbuildable. If pulseaudio didn't really
 require gtk3 libraries at runtime, then pulseaudio could use
 `depends_skip_archcheck-append gtk3` so that gtk3 and its dependencies
 would not need to be installed universal.

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Ticket URL: <https://trac.macports.org/ticket/57643>
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