Bug#973868: satpy: autopkgtest failure with pyproj 3.0.0

[Bas Couwenberg]

Source: satpy
Version: 0.23.0-1
Severity: serious
Tags: ftbfs
Justification: makes the package in question unusable or mostly so

Dear Maintainer,

The autopkgtest of your package fail with pyproj 3.0.0:

 === python3.9 ===
 satpy (unittest.loader._FailedTest) ... ERROR
 
 ======================================================================
 ERROR: satpy (unittest.loader._FailedTest)
 ----------------------------------------------------------------------
 ImportError: Failed to import test module: satpy
 Traceback (most recent call last):
   File "pyresample/ewa/_ll2cr.pyx", line 27, in pyresample.ewa._ll2cr
 ModuleNotFoundError: No module named 'pyproj._proj'
 
 During handling of the above exception, another exception occurred:
 
 Traceback (most recent call last):
   File "/usr/lib/python3.9/unittest/loader.py", line 154, in loadTestsFromName
     module = __import__(module_name)
   File "/usr/lib/python3/dist-packages/satpy/__init__.py", line 33, in <module>
     from satpy.readers import (find_files_and_readers,  # noqa
   File "/usr/lib/python3/dist-packages/satpy/readers/__init__.py", line 34, in <module>
     from .yaml_reader import (AbstractYAMLReader,
   File "/usr/lib/python3/dist-packages/satpy/readers/yaml_reader.py", line 41, in <module>
     from satpy.resample import get_area_def
   File "/usr/lib/python3/dist-packages/satpy/resample.py", line 144, in <module>
     from pyresample.ewa import fornav, ll2cr
   File "/usr/lib/python3/dist-packages/pyresample/ewa/__init__.py", line 72, in <module>
     from pyresample.ewa import _ll2cr, _fornav
   File "pyresample/ewa/_ll2cr.pyx", line 30, in init pyresample.ewa._ll2cr
 ModuleNotFoundError: No module named 'pyproj._proj'
 
 
 ----------------------------------------------------------------------
 Ran 1 test in 0.000s
 
 FAILED (errors=1)

https://ci.debian.net/data/autopkgtest/unstable/amd64/s/satpy/7973931/log.gz

Kind Regards,

Bas