[MacPorts] #62914: py37-obspy @1.2.2_0 greenlet not installed and reading fails

[MacPorts]

#62914: py37-obspy @1.2.2_0 greenlet not installed and reading fails
----------------------+----------------------
 Reporter:  anowacki  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.4
 Keywords:            |       Port:  py-obspy
----------------------+----------------------
 When trying to read some files (certainly StationXML files) using
 py37-obspy, I get a {{{DistributionNotFound}}} error as greenlet is
 required but not installed ({{{DistributionNotFound: The
 'greenlet!=0.4.17' distribution was not found and is required by
 sqlalchemy}}} ; see edited traceback below.)

 If I install `py37-greenlet`, all is well and IO works again.

 Obspy was simply installed with `port install py37-obspy`.

 I'm not sure of the implications of this, but I guess it might simply be
 required that the appropriate greenlet version be added to the library
 dependencies of the port file.  Apologies that I don't have the time to
 set up a testing environment to confirm this.

 I also note that none of the `py-obspy` subports for different Python
 versions contains a library dependency on greenlet, so it is possible that
 all the subports are affected.

 {{{
 $ python -c 'import obspy;
 obspy.core.inventory.read_inventory("test/data/orfeus_NL_HGN.xml")'
 Traceback (most recent call last):
   File "<string>", line 1, in <module>
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/decorator.py", line 232, in fun
     return caller(func, *(extras + args), **kw)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/util/decorator.py", line 300, in
 _map_example_filename
     return func(*args, **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/inventory/inventory.py", line 89, in
 read_inventory
     **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/util/base.py", line 702, in _generic_reader
     generic = callback_func(pathnames[0], **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/decorator.py", line 232, in fun
     return caller(func, *(extras + args), **kw)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/util/decorator.py", line 210, in uncompress_file
     result = func(filename, *args, **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/inventory/inventory.py", line 98, in _read
     **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/util/base.py", line 435, in _read_from_plugin
     'isFormat')
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/obspy/core/util/misc.py", line 651, in
 buffered_load_entry_point
     _ENTRY_POINT_CACHE[hash_str] = load_entry_point(dist, group, name)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/pkg_resources/__init__.py", line 474, in load_entry_point
     return get_distribution(dist).load_entry_point(group, name)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/pkg_resources/__init__.py", line 2846, in load_entry_point
     return ep.load()
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/pkg_resources/__init__.py", line 2449, in load
     self.require(*args, **kwargs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/pkg_resources/__init__.py", line 2472, in require
     items = working_set.resolve(reqs, env, installer, extras=self.extras)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/pkg_resources/__init__.py", line 772, in resolve
     raise DistributionNotFound(req, requirers)
 pkg_resources.DistributionNotFound: The 'greenlet!=0.4.17' distribution
 was not found and is required by sqlalchemy

 $ sudo port install py37-greenlet
 --->  Computing dependencies for py37-greenlet
 --->  Activating py37-greenlet @1.0.0_0
 --->  Cleaning py37-greenlet
 --->  Scanning binaries for linking errors
 --->  No broken files found.
 --->  No broken ports found.

 $ python -c 'import obspy;
 obspy.core.inventory.read_inventory("test/data/orfeus_NL_HGN.xml")'

 $
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62914>
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