[MacPorts] #64380: img2pdf @0.4.3_0+python39 Cannot be executed, ("The 'packaging>=20' distribution was not found ...")

[MacPorts]

#64380: img2pdf @0.4.3_0+python39 Cannot be executed, ("The 'packaging>=20'
distribution was not found ...")
--------------------------------------+--------------------
 Reporter:  7RKJ2rIlETTFzZwO          |      Owner:  (none)
     Type:  defect                    |     Status:  new
 Priority:  Normal                    |  Milestone:
Component:  ports                     |    Version:  2.7.1
 Keywords:  img2pdf, python, pikepdf  |       Port:
--------------------------------------+--------------------
 Hi everyone,

 Running Macports 2.7.1 on Mac OS Catalina 10.15.7.

 I noticed today that img2pdf returns the following error every time I try
 to run it:

 {{{
 Traceback (most recent call last):
   File "/opt/local/bin/img2pdf", line 33, in <module>
     sys.exit(load_entry_point('img2pdf==0.4.3', 'console_scripts',
 'img2pdf')())
   File "/opt/local/bin/img2pdf", line 25, in importlib_load_entry_point
     return next(matches).load()
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/metadata.py",
 line 77, in load
     module = import_module(match.group('module'))
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/__init__.py",
 line 127, in import_module
     return _bootstrap._gcd_import(name[level:], package, level)
   File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
   File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
   File "<frozen importlib._bootstrap>", line 986, in
 _find_and_load_unlocked
   File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
   File "<frozen importlib._bootstrap_external>", line 850, in exec_module
   File "<frozen importlib._bootstrap>", line 228, in
 _call_with_frames_removed
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/img2pdf.py", line 49, in <module>
     import pikepdf
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pikepdf/__init__.py", line 19, in <module>
     from ._version import __version__
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pikepdf/_version.py", line 7, in <module>
     from pkg_resources import DistributionNotFound
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 3267, in <module>
     def _initialize_master_working_set():
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 3241, in _call_aside
     f(*args, **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 3279, in
 _initialize_master_working_set
     working_set = WorkingSet._build_master()
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 573, in _build_master
     ws.require(__requires__)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 891, in require
     needed = self.resolve(parse_requirements(requirements))
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 777, in resolve
     raise DistributionNotFound(req, requirers)
 pkg_resources.DistributionNotFound: The 'packaging>=20' distribution was
 not found and is required by pikepdf
 }}}

 Does anyone know what is going on here, and whether there's a fix? Thanks
 in advance!

-- 
Ticket URL: <https://trac.macports.org/ticket/64380>
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