Merge pull request #13841 from bluetech/tox-cleanups

Some tox cleanups

Author: bluetech

changelog/13841.contrib.rst

@@ -0,0 +1 @@
+``tox>=4`` is now required when contributing to pytest.

tox.ini

@@ -1,7 +1,6 @@
 [tox]
-isolated_build = True
-minversion = 3.20.0
-distshare = {homedir}/.tox/distshare
+requires =
+    tox >= 4
 envlist =
     linting
     py310
@@ -94,12 +93,14 @@ deps =
     xdist: pytest-xdist>=2.1.0
     xdist: -e .
     {env:_PYTEST_TOX_EXTRA_DEP:}
+# Can use the same wheel for all environments.
+package = wheel
+wheel_build_env = .pkg
 
 [testenv:linting]
 description =
     run pre-commit-defined linters under `{basepython}`
 skip_install = True
-basepython = python3
 deps = pre-commit>=2.9.3
 commands = pre-commit run --all-files --show-diff-on-failure {posargs:}
 setenv =
@@ -127,7 +128,6 @@ setenv =
 [testenv:docs-checklinks]
 description =
     check the links in the documentation with `{basepython}`
-basepython = python3
 usedevelop = True
 changedir = doc/en
 deps = -r{toxinidir}/doc/en/requirements.txt
@@ -141,7 +141,6 @@ setenv =
 description =
     regenerate documentation examples under `{basepython}`
 changedir = doc/en
-basepython = python3
 passenv =
     SETUPTOOLS_SCM_PRETEND_VERSION_FOR_PYTEST
 deps =
@@ -194,7 +193,6 @@ commands =
 
 [testenv:release]
 description = do a release, required posarg of the version number
-basepython = python3
 usedevelop = True
 passenv = *
 deps =
@@ -212,7 +210,6 @@ commands = python scripts/prepare-release-pr.py {posargs}
 
 [testenv:generate-gh-release-notes]
 description = generate release notes that can be published as GitHub Release
-basepython = python3
 usedevelop = True
 deps =
     pypandoc