[MacPorts] #58946: Staging of swig-python3 fails

[MacPorts]

#58946: Staging of swig-python3 fails
-----------------------------+-----------------------
  Reporter:  dmitriykovalev  |      Owner:  michaelld
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.5.4
Resolution:                  |   Keywords:
      Port:  swig-python3    |
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Comment (by michaelld):

 If it were just that simple! The actual error is:
 {{{
 :info:destroot Installing language specific files for python3
 :info:destroot /bin/sh: line 0: cd: ./Lib/python3: No such file or
 directory
 :info:destroot /bin/sh: line 0: cd: ./Lib/python3: No such file or
 directory
 :info:destroot Installing nothing from Lib/python3
 }}}
 so... something is going wrong with the SWIG build system ... maybe it's
 been fixed on master? Patches welcome!

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Ticket URL: <https://trac.macports.org/ticket/58946#comment:7>
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