[MacPorts] #51801: qt5: support older versions of OS X via different versions of Qt 5

[MacPorts]

#51801: qt5: support older versions of OS X via different versions of Qt 5
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 Reporter:  davide.liessi@…  |      Owner:  macports-tickets@…
     Type:  enhancement      |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:
 Keywords:                   |       Port:  qt5
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 In the Portfile for qt5 I found this note
 {{{
 TODO: support older versions of OS X via different versions of Qt 5
 }}}

 I'm still on Snow Leopard and some projects I follow are moving to Qt 5,
 e.g. Frescobaldi (I maintain its Portfile).

 Would it be feasible to implement this?
 How much effort would it take?
 I would be glad to help in testing.

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Ticket URL: <https://trac.macports.org/ticket/51801>
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