https://github.com/wichert/lingua/pull/113

--- lingua-4.15.0/src/lingua/extract.py.orig
+++ lingua-4.15.0/src/lingua/extract.py
@@ -14,7 +14,10 @@
 try:
     from configparser import SafeConfigParser
 except ImportError:
-    from ConfigParser import SafeConfigParser
+    try:
+        from configparser import ConfigParser as SafeConfigParser
+    except ImportError:
+        from ConfigParser import SafeConfigParser
 import click
 import polib
 from lingua.extractors import get_extractor
--- lingua-4.15.0/src/lingua/extractors/__init__.py.orig
+++ lingua-4.15.0/src/lingua/extractors/__init__.py
@@ -1,12 +1,13 @@
 from __future__ import print_function
-from pkg_resources import DistributionNotFound
-from pkg_resources import working_set
 import abc
 import collections
 import os
 import re
 import sys
 from .compat import add_metaclass
+from .compat import EntryPointLoadError
+from .compat import iter_entry_points
+from .compat import load_entry_point
 
 
 Message = collections.namedtuple(
@@ -162,10 +163,10 @@
 
 
 def register_extractors():
-    for entry_point in working_set.iter_entry_points("lingua.extractors"):
+    for entry_point in iter_entry_points("lingua.extractors"):
         try:
-            extractor = entry_point.load(require=True)
-        except DistributionNotFound:
+            extractor = load_entry_point(entry_point)
+        except EntryPointLoadError:
             # skip this entry point since at least one required dependency can
             # not be found
             extractor = None
--- lingua-4.15.0/src/lingua/extractors/babel.py.orig
+++ lingua-4.15.0/src/lingua/extractors/babel.py
@@ -1,5 +1,6 @@
-from pkg_resources import DistributionNotFound
-from pkg_resources import working_set
+from .compat import EntryPointLoadError
+from .compat import iter_entry_points
+from .compat import load_entry_point
 from .python import KEYWORDS
 from .python import parse_keyword
 from . import EXTRACTORS
@@ -58,11 +59,11 @@
 
 
 def register_babel_plugins():
-    for entry_point in working_set.iter_entry_points("babel.extractors"):
+    for entry_point in iter_entry_points("babel.extractors"):
         name = entry_point.name
         try:
-            extractor = entry_point.load(require=True)
-        except DistributionNotFound:
+            extractor = load_entry_point(entry_point)
+        except EntryPointLoadError:
             # skip this entry point since at least one required dependency can
             # not be found
             extractor = None
--- lingua-4.15.0/src/lingua/extractors/compat.py.orig
+++ lingua-4.15.0/src/lingua/extractors/compat.py
@@ -1,6 +1,41 @@
 # Python compatibility support code
 # This is taken from six
 
+# Entry points compatibility for importlib.metadata vs pkg_resources
+try:
+    from importlib.metadata import entry_points
+
+    try:
+        # Python 3.10+ returns SelectableGroups with select() method
+        entry_points(group="test")
+
+        def iter_entry_points(group):
+            return entry_points(group=group)
+    except TypeError:
+        # Python 3.9 returns a dict-like object
+        def iter_entry_points(group):
+            eps = entry_points()
+            return eps.get(group, [])
+
+    # In importlib.metadata, entry_point.load() doesn't have require parameter.
+    # Missing dependencies raise ModuleNotFoundError instead of DistributionNotFound.
+    EntryPointLoadError = ModuleNotFoundError
+
+    def load_entry_point(entry_point):
+        return entry_point.load()
+
+except ImportError:
+    from pkg_resources import DistributionNotFound
+    from pkg_resources import working_set
+
+    def iter_entry_points(group):
+        return working_set.iter_entry_points(group)
+
+    EntryPointLoadError = DistributionNotFound
+
+    def load_entry_point(entry_point):
+        return entry_point.load(require=True)
+
 
 def add_metaclass(metaclass):
     """Class decorator for creating a class with a metaclass."""
--- lingua-4.15.0/tests/extractors/test_python.py.orig
+++ lingua-4.15.0/tests/extractors/test_python.py
@@ -227,7 +227,7 @@
     options = mock.Mock()
     options.keywords = []
     options.comment_tag = "I18N:"
-    source = u"""_('word', func('foo', 2'))"""
+    source = u"""_('word', func('foo', 2))"""
     messages = list(python_extractor("filename", options))
     assert len(messages) == 1
     assert messages[0].msgid == "word"