[MacPorts] #64916: Pythons 3.x for ppc+ppc64 on Leopard: No module named 'msvcrt', '_posixsubprocess' errors, how to fix?

[MacPorts]

#64916: Pythons 3.x for ppc+ppc64 on Leopard: No module named 'msvcrt',
'_posixsubprocess' errors, how to fix?
--------------------------------------------+------------------------------
  Reporter:  barracuda156                   |      Owner:  jmroot
      Type:  defect                         |     Status:  assigned
  Priority:  Normal                         |  Milestone:
 Component:  ports                          |    Version:  2.7.2
Resolution:                                 |   Keywords:  powerpc,
      Port:  python38, python39, python310  |  leopard, ppc64
--------------------------------------------+------------------------------

Comment (by barracuda156):

 Replying to [comment:2 mascguy]:

 So interestingly, all modules apparently get built correctly, if I just
 run `sudo port -v build`, and get placed in:
 `/opt/local/var/macports/build/_opt_PPCLeopardPorts_lang_python310/python310/work/Python-3.10.4/build/lib.macosx-10.5-powerpc-3.10`.
 They have both archs:

 {{{
 /opt/local/var/macports/build/_opt_PPCLeopardPorts_lang_python310/python310/work/Python-3.10.4/build/lib.macosx-10.5-powerpc-3.10/_posixsubprocess.cpython-310-darwin.so:
 Mach-O universal binary with 2 architectures
 /opt/local/var/macports/build/_opt_PPCLeopardPorts_lang_python310/python310/work/Python-3.10.4/build/lib.macosx-10.5-powerpc-3.10/_posixsubprocess.cpython-310-darwin.so
 (for architecture ppc7400):    Mach-O bundle ppc
 /opt/local/var/macports/build/_opt_PPCLeopardPorts_lang_python310/python310/work/Python-3.10.4/build/lib.macosx-10.5-powerpc-3.10/_posixsubprocess.cpython-310-darwin.so
 (for architecture ppc64):      Mach-O 64-bit bundle ppc64
 }}}


 However they get screwed at destroot, turning into "failed", i.e.:
 `_posixsubprocess.cpython-310-darwin_failed.so`. These failed ones get
 installed into framework, and surely fail to work. Failed ones only have
 `ppc`.

 ''What's happening here?'' I had tried also using a patch identical to the
 one used for `python27`, which works for it, but here I get the same
 result.
 Also strangely, build does not fail, that's why these error went unnoticed
 for a while. And Python's binaries build normally, only these modules
 failing.

-- 
Ticket URL: <https://trac.macports.org/ticket/64916#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS