[MacPorts] #61065: py-virtualenv @20.0.27_0 virtualenv script exits with an error

[MacPorts]

#61065: py-virtualenv @20.0.27_0 virtualenv script exits with an error
--------------------+---------------------------
 Reporter:  mainka  |      Owner:  larryv
     Type:  defect  |     Status:  assigned
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.6.3
 Keywords:          |       Port:  py-virtualenv
--------------------+---------------------------
 Steps to reproduce:

 {{{
 $ sudo port install py37-virtualenv
 $ virtualenv-3.7 --help
 Traceback (most recent call last):
   File "/opt/local/bin/virtualenv-3.7", line 33, in <module>
     sys.exit(load_entry_point('virtualenv==20.0.27', 'console_scripts',
 'virtualenv')())
   File "/opt/local/bin/virtualenv-3.7", line 25, in
 importlib_load_entry_point
     return next(matches).load()
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/importlib_metadata/__init__.py", line 107, in load
     return functools.reduce(getattr, attrs, module)
 AttributeError: module 'virtualenv' has no attribute 'main'
 }}}

 Notice that {{{python3.7 -mvirtualenv --help}}} works.

 This defects seems to appear in version @20.0.25 (commit:
 50bb3d174374cc817521a909d89ae430854e98a0).

-- 
Ticket URL: <https://trac.macports.org/ticket/61065>
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