Remove namespace init file. (#303)

Remove old __init__.py file.

.github/workflows/python-package.yml

@@ -33,6 +33,10 @@ jobs:
           - python-version: '3.9'
             pip-sphinx: '"sphinx<4" "jinja2<3.1"'
             pytest-options: '-m "not (numpydoc or rinohtype)"'
+          # latest of sphinx 4.x series (released for Python 3.10)
+          - python-version: '3.10'
+            pip-sphinx: '"sphinx<5"'
+            pytest-options: '-m "not (numpydoc or rinohtype)"'
           # sphinx pre-release
           - python-version: '3.10'
             pip-sphinx: '--pre sphinx'

CHANGELOG.rst

@@ -9,6 +9,9 @@
   This is because ``importlib`` does not allow runtime modification of
   entry points.
 
+* Remove sphinxcontrib namespace ``__init__.py`` file (no longer needed for
+  Python 3.3+ by PEP420).
+
 2.4.2 (10 April 2022)
 ---------------------
 

setup.py

@@ -1,6 +1,6 @@
 import io
 import re
-from setuptools import setup, find_packages
+from setuptools import setup, find_namespace_packages
 from typing import Optional
 
 
@@ -58,7 +58,7 @@ def plugin(plugin_name: str, mod_name: Optional[str] = None) -> str:
         'Topic :: Utilities',
     ],
     platforms='any',
-    packages=find_packages('src'),
+    packages=find_namespace_packages('src'),
     package_dir={'': 'src'},
     package_data={'sphinxcontrib.bibtex': ['py.typed']},
     include_package_data=True,