[MacPorts] #62023: python39 @3.9.1 does not build universal on BigSur

[MacPorts]

#62023: python39 @3.9.1 does not build universal on BigSur
-----------------------+------------------------------
  Reporter:  kencu     |      Owner:  jmroot
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  BigSur universal
      Port:  python39  |
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Comment (by kencu):

 Here are the changes induced into python39 by the patch phase and post-
 patch reinplaces:

 generated by this:
 {{{
    35  sudo port clean
    36  sudo port -v extract subport=python39 +universal
    37  cd work
    38  sudo chmod -R a+rw ./*
    39  cd P*
    40  git init
    41  git add .
    42  git commit -m init > /dev/null
    43  cd ../..
    44  sudo port -v patch subport=python39 +universal
    45  cd work
    46  cd P*
    47  git status
    48  git diff
    49  git diff --no-prefix > ~/python39-changes-from-patch.txt
 }}}

 I'll attach the whole diff, but it looks like this part in configure is
 what needs fixing:
 {{{
              intel)
 -               UNIVERSAL_ARCH_FLAGS="-arch i386 -arch x86_64"
 +               UNIVERSAL_ARCH_FLAGS="-arch arm64 -arch x86_64"
                 LIPO_32BIT_FLAGS="-extract i386"
                 ARCH_RUN_32BIT="/usr/bin/arch -i386"
                 ;;
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62023#comment:2>
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