Avoid setuptools bug by keeping a small part of the setup.cfg

Author: Pierre-Sassoulas

pyproject.toml

@@ -63,9 +63,6 @@ license-files = [
   "LICENSE",
 ]
 
-[tool.setuptools.dynamic.version]
-attr = "pytest_asyncio.__version__"
-
 [tool.setuptools_scm]
 write_to = "pytest_asyncio/_version.py"
 

setup.cfg

@@ -0,0 +1,18 @@
+[metadata]
+# Not everything is in in pyproject.toml because of this issue:
+; Traceback (most recent call last):
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 69, in __getattr__
+;    return next(
+;           ^^^^^
+;StopIteration
+;
+;The above exception was the direct cause of the following exception:
+;
+;Traceback (most recent call last):
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 183, in read_attr
+;    return getattr(StaticModule(module_name, spec), attr_name)
+;           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 75, in __getattr__
+;    raise AttributeError(f"{self.name} has no attribute {attr}") from e
+;AttributeError: pytest_asyncio has no attribute __version__
+version = attr: pytest_asyncio.__version__