Update version handling to remove use of pkg_resources

.gitignore

@@ -226,3 +226,4 @@ test/
 .history/
 pydata-sphinx-theme/
 _build
+_version.py

setup.cfg

@@ -22,6 +22,7 @@ install_requires =
   docutils>=0.18
   feedgen>=0.9.0
   invoke>=1.6.0
+  packaging>=19.0
   python-dateutil>=2.8.2
   sphinx>=5.0.0
   watchdog>=2.1.0
@@ -57,8 +58,6 @@ filterwarnings =
   always::pytest.PytestConfigWarning
   # Sphinx and other packages raise these
   ignore:'imghdr' is deprecated and slated for removal in Python 3.13:DeprecationWarning
-  ignore:.*pkg_resources.declare_namespace.*
-  ignore:The alias.*
 
 [pycodestyle]
 max_line_length = 120

setup.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 from setuptools import setup  # isort:skip
+import os
 from itertools import chain
 
 try:
@@ -25,5 +26,5 @@
 
 setup(
     extras_require=extras,
-    use_scm_version=True,
+    use_scm_version={"write_to": os.path.join("src", "ablog", "_version.py")},
 )

src/ablog/version.py

@@ -1,6 +1,17 @@
-from pkg_resources import DistributionNotFound, get_distribution
-
 try:
-    version = get_distribution("ablog").version
-except DistributionNotFound:
-    version = "unknown.dev"
+    from ._version import version
+except Exception:
+    import warnings
+
+    warnings.warn(f'could not determine {__name__.split(".")[0]} package version; this indicates a broken installation')
+    del warnings
+
+    version = "0.0.0"
+
+from packaging.version import parse as _parse
+
+_version = _parse(version)
+major, minor, bugfix = [*_version.release, 0][:3]
+release = not _version.is_devrelease
+
+__all__ = ["version", "major", "minor", "bugfix", "release"]

tox.ini

@@ -63,9 +63,13 @@ conda_deps =
     make
     myst-parser
     nbsphinx
+    packaging
     pandoc
+    pip
     pytest
     python-dateutil
+    setuptools
+    setuptools-scm
     sphinx
     sphinx-automodapi
     watchdog