Remove (mostly) redundant setup.cfg

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=38.3.0", "wheel"]
+requires = ["setuptools>=64.0.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -75,6 +75,23 @@ extend-exclude = '''
 )/
 '''
 
+# coverage configuration
+[tool.coverage.run]
+branch = true
+relative_files = true
+parallel = true
+source = [
+    "tests",
+    "wrapt",
+]
+
+[tool.coverage.paths]
+src = [
+    "src/",
+    ".tox/*/lib/*/site-packages/",
+    ".tox/pypy*/site-packages/",
+]
+
 # pytest configuration
 [tool.pytest.ini_options]
 testpaths = ["tests"]

tox.ini

@@ -0,0 +1,28 @@
+[tox]
+envlist =
+  py{39,310,311,312,313,314}
+  py{39,310,311,312,313,314}-{without,install,disable}-extensions,
+  pypy-without-extensions
+
+[testenv]
+deps =
+  coverage
+  pytest
+install_command = python -m pip install --no-binary coverage {opts} {packages}
+setenv =
+  without-extensions: WRAPT_INSTALL_EXTENSIONS = false
+  install-extensions,disable-extensions: WRAPT_INSTALL_EXTENSIONS = true
+  disable-extensions: WRAPT_DISABLE_EXTENSIONS = true
+commands =
+  python -m coverage run --rcfile {toxinidir}/pyproject.toml -m pytest -v {posargs} {toxinidir}/tests
+
+[gh-actions]
+python =
+    3.9: py39, py39-without-extensions, py39-install-extensions, py39-disable-extensions
+    3.10: py310, py310-without-extensions, py310-install-extensions, py310-disable-extensions
+    3.11: py311, py311-without-extensions, py311-install-extensions, py311-disable-extensions
+    3.12: py312, py312-without-extensions, py312-install-extensions, py312-disable-extensions
+    3.13: py313, py313-without-extensions, py313-install-extensions, py313-disable-extensions
+    3.14: py314, py314-without-extensions, py314-install-extensions, py314-disable-extensions
+    pypy-3.9: pypy-without-extensions
+    pypy-3.10: pypy-without-extensions