[MacPorts] #68908: py-numpy: pep517 backend broken: ERROR: Unknown compiler(s): [['cython'], ['cython3']]

[MacPorts]

#68908: py-numpy: pep517 backend broken: ERROR: Unknown compiler(s): [['cython'],
['cython3']]
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  michaelld
  barracuda156           |
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:              |   Keywords:  tiger, leopard, snowleopard,
      Port:              |  powerpc
  py311-numpy            |
-------------------------+-------------------------------------------------

Comment (by barracuda156):

 On a side note, here is why pep517 thinks this is a cross-build:
 ```
         if sysconfig.get_platform().startswith('macosx-'):
             archflags = os.environ.get('ARCHFLAGS', '').strip()
             if archflags:
                 arch, *other = filter(None, (x.strip() for x in
 archflags.split('-arch')))
                 if other:
                     raise ConfigError(f'Multi-architecture builds are not
 supported but $ARCHFLAGS={archflags!r}')
                 macver, _, nativearch = platform.mac_ver()
                 if arch != nativearch:
                     x = os.environ.setdefault('_PYTHON_HOST_PLATFORM',
 f'macosx-{macver}-{arch}')
                     if not x.endswith(arch):
                         raise ConfigError(f'$ARCHFLAGS={archflags!r} and
 $_PYTHON_HOST_PLATFORM={x!r} do not agree')
                     family = 'aarch64' if arch == 'arm64' else arch
                     cross_file_data = textwrap.dedent(f'''
                         [binaries]
                         c = ['cc', '-arch', {arch!r}]
                         cpp = ['c++', '-arch', {arch!r}]
                         [host_machine]
                         system = 'darwin'
                         cpu = {arch!r}
                         cpu_family = {family!r}
                         endian = 'little'
                     ''')
                     self._meson_cross_file.write_text(cross_file_data)
                     self._meson_args['setup'].extend(('--cross-file',
 os.fspath(self._meson_cross_file)))
 ```
 But python has `PowerPC`, which is not the arch name:
 ```
 macmini:macports-ports svacchanda$ /opt/local/bin/python3.11 -c 'import
 platform; print(platform.mac_ver())'
 ('10.6.8', ('', '', ''), 'PowerPC')
 ```

-- 
Ticket URL: <https://trac.macports.org/ticket/68908#comment:9>
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