[MacPorts] #70585: py310-pyqt5-webengine upgrade broken on port version 2.10.1 on Ventura 13.6.7

[MacPorts]

#70585: py310-pyqt5-webengine upgrade broken on port version 2.10.1 on Ventura
13.6.7
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  Reporter:  Alex11N                |      Owner:  reneeotten
      Type:  defect                 |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.10.1
Resolution:                         |   Keywords:
      Port:  py310-pyqt5-webengine  |
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Comment (by Alex11N):

 Hello Renee, I meant to report back yesterday about the results of
 changing the portfile to 'use_xcode no', but it's possible that I made a
 comment into the other thread #65107, by mistake. Inant event, it still
 failed.

 I also tried building the port - via another port for which
 py310-pyqt5-webengine is a dependency )py310-eric-ide) - on another
 machine running on Sonoma that I'd recently set MacPorts up on, so it had
 a relatively clean and sane environment to work in. The whole thing went
 without a hitch except that I had to install Xcode itself, the
 py310-pyqt5-webengine build sequence complaining that it required the full
 version of Xcode and please install it. Once downloaded and the EULA
 agreed to, that was fine too, and the whole project including the
 py31-pyqt5-webengine installed withoui further problems. (The fact that
 Eric6 failed to run, with a crash report, isn't relevant here as it was
 QScintilla that broke at run-time.)

 That suggests a problem inside my ports install - I'm going to 'uninstall'
 everything in it and start again from scratch on the first machine (I doid
 the same with the sencond machine when the Erric IDE failed to run. iTerm2
 was having run-time crashes as well - luckly for me I use Geany as a code
 editor, so this hasn't affected anything anything badly excpet for taking
 up time. Debugging practise isn't too much of a watse of time, though - up
 to a point!

 If I get any further with this I'll do as you suggest and post a PR,

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Ticket URL: <https://trac.macports.org/ticket/70585#comment:14>
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