Use base class distutils.cmd.Command if/when necessary

.github/workflows/release.yml

@@ -14,8 +14,8 @@ jobs:
       id-token: write  # mandatory for trusted publishing
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.10'
 

.github/workflows/tests.yml

@@ -13,11 +13,11 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -26,7 +26,7 @@ jobs:
         git config --global user.name tester
         git config --global user.email [email protected]
     - run: tox -e py
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
         files: .tox/test-reports/coverage.xml
 
@@ -37,11 +37,11 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.6', '3.7']
+        python-version: ['3.7', '3.8', '3.9']
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -50,7 +50,7 @@ jobs:
         git config --global user.name tester
         git config --global user.email [email protected]
     - run: tox -e py
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
         files: .tox/test-reports/coverage.xml
 
@@ -59,10 +59,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.13'
 
     - run: pip install -U pip tox
     - run: tox -e docs,style,security

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"

setup.py

@@ -77,6 +77,8 @@ def complete_args(args):
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
+            "Programming Language :: Python :: 3.12",
+            "Programming Language :: Python :: 3.13",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: Python :: Implementation :: PyPy",
             "Topic :: Software Development :: Build Tools",

setupmeta/__init__.py

@@ -783,7 +783,14 @@ def __exit__(self, *args):
 def meta_command_init(self, dist, **kwargs):
     """Custom __init__ injected to commands decorated with @MetaCommand"""
     self.setupmeta = getattr(dist, "_setupmeta", None)
-    setuptools.Command.__init__(self, dist, **kwargs)
+    ancestor = setuptools.Command
+    if not isinstance(self, setuptools.Command):
+        # See https://github.com/pypa/setuptools/issues/4902
+        import distutils.cmd
+
+        ancestor = distutils.cmd.Command
+
+    ancestor.__init__(self, dist, **kwargs)
 
 
 class UsageError(Exception):

tox.ini

@@ -1,7 +1,7 @@
 [tox]
-envlist = py{36,37,38,39,310,311}, coverage, docs, style, security
-skip_missing_interpreters = true
-
+envlist = py{37,38,39,310,311,312,313}, coverage, docs, style, security
+indexserver =
+    default = https://pypi.org/simple
 
 [testenv]
 passenv = CI