[MacPorts] #68208: meson, ninja: convert to py-{meson, ninja} to support the "meson-python" PEP517 backend

[MacPorts]

#68208: meson, ninja: convert to py-{meson,ninja} to support the "meson-python"
PEP517 backend
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  Reporter:  reneeotten    |      Owner:  reneeotten
      Type:  enhancement   |     Status:  reopened
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  meson, ninja  |
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Comment (by jmroot):

 You're right that it's better to use python.pep517_backend, but it looks
 like fabio does explicitly list ninja in its dependencies:
 https://github.com/silx-kit/fabio/blob/main/pyproject.toml#L55

 That's probably unnecessary since it's only directly using meson? The
 `ninja` project on pypi is this, BTW: https://github.com/scikit-build
 /ninja-python-distributions

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Ticket URL: <https://trac.macports.org/ticket/68208#comment:9>
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