[MacPorts] #54281: cmake - 3.8.2 update fails to build on OS 10.12

[MacPorts]

#54281: cmake - 3.8.2 update fails to build on OS 10.12
---------------------------+-----------------
  Reporter:  cjones051073  |      Owner:
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  cmake         |
---------------------------+-----------------

Comment (by cjones051073):

 primary issue appears to be

 {{{
 :info:build Traceback (most recent call last):
 :info:build   File "/opt/local/bin/sphinx-build-2.7", line 6, in <module>
 :info:build     from pkg_resources import load_entry_point
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 3037, in <module>
 :info:build     @_call_aside
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 3021, in _call_aside
 :info:build     f(*args, **kwargs)
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 3050, in
 _initialize_master_working_set
 :info:build     working_set = WorkingSet._build_master()
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 655, in _build_master
 :info:build     ws.require(__requires__)
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 969, in require
 :info:build     needed = self.resolve(parse_requirements(requirements))
 :info:build   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages/pkg_resources/__init__.py", line 855, in resolve
 :info:build     raise DistributionNotFound(req, requirers)
 :info:build pkg_resources.DistributionNotFound: The 'typing' distribution
 was not found and is required by Sphinx
 :info:build make[2]: *** [Utilities/Sphinx/doc_format_html] Error 1
 :info:build make[2]: Leaving directory
 `/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_devel_cmake/cmake/work/cmake-3.8.2'
 :info:build make[1]: ***
 [Utilities/Sphinx/CMakeFiles/documentation.dir/all] Error 2
 :info:build make[1]: Leaving directory
 `/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_devel_cmake/cmake/work/cmake-3.8.2'
 :info:build make: *** [all] Error 2
 }}}

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Ticket URL: <https://trac.macports.org/ticket/54281#comment:1>
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