[MacPorts] #55651: qt5-qtwebengine @5.10.0: Requires newer Xcode than can be installed on Yosemite

[MacPorts]

#55651: qt5-qtwebengine @5.10.0: Requires newer Xcode than can be installed on
Yosemite
------------------------------+---------------------------------
  Reporter:  ryandesign       |      Owner:  MarcusCalhoun-Lopez
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  yosemite
      Port:  qt5-qtwebengine  |
------------------------------+---------------------------------

Comment (by MarcusCalhoun-Lopez):

 I have created a [https://github.com/macports/macports-ports/pull/1840
 pull request] that should fix this problem.

 There may be a way to get QtWebEngine working on older platforms.\\
 However, every one of my attempts so far has ended in failure.

 As outlined in [https://lists.macports.org/pipermail/macports-
 dev/2018-May/038859.html this message], there are still outstanding issues
 with QtWebEngine on older platforms.\\
 In order to get QtWebEngine working, we would have to:
 * OS X 10.8: Qt would have to revert to 5.5
 * Mac OS X 10.7: Qt would have to revert to 5.5
 * Mac OS X 10.6: a new port for Qt 5.4 would have to be created

 I do not believe it is worth it to make these changes.\\
 QtWebEngine is a special case.\\
 The only ports that use it are:
 * QupZilla
 * gpsbabel
 * luminance-hdr
 * py-pyqt5
 * qt5-qtcreator

 Of those, only QupZilla and luminance-hdr have a **mandatory** dependency
 on QtWebEngine.\\
 QupZilla requires at least Qt 5.9.\\
 There is an [https://github.com/LuminanceHDR/LuminanceHDR/blob/master
 /luminance-hdr-2.5.0-qtwebkit.patch upstream patch] that purports to allow
 luminance-hdr to use QtWebkit instead of QtWebEngine.

-- 
Ticket URL: <https://trac.macports.org/ticket/55651#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS