Revert "Modernize pyproject + tox (#1227)" (#1232)

This reverts commit 3f36d49.

Author: kingbuzzman

pyproject.toml

@@ -40,8 +40,7 @@ classifiers = [
 dependencies = [
     "pytest>=7.0.0",
 ]
-
-[project.optional-dependencies]
+[dependency-groups]
 docs = [
     "sphinx",
     "sphinx_rtd_theme",
@@ -69,7 +68,6 @@ linting = [
     "ruff==0.9.5",
     "zizmor==1.9.0",
 ]
-
 [project.urls]
 Documentation = "https://pytest-django.readthedocs.io/"
 Repository = "https://github.com/pytest-dev/pytest-django"

tox.ini

@@ -8,7 +8,7 @@ envlist =
     linting
 
 [testenv]
-extras =
+dependency_groups =
     testing
     coverage: coverage
     mysql: mysql
@@ -43,7 +43,7 @@ commands =
     coverage: coverage xml
 
 [testenv:linting]
-extras = linting
+dependency_groups = linting
 commands =
     ruff check --diff {posargs:pytest_django pytest_django_test tests}
     ruff format --quiet --diff {posargs:pytest_django pytest_django_test tests}
@@ -54,12 +54,12 @@ commands =
 [testenv:doc8]
 basepython = python3
 skip_install = true
-extras = docs
+dependency_groups = docs
 deps =
     doc8
 commands =
     doc8 docs/
 
 [testenv:docs]
-extras = docs
+dependency_groups = docs
 commands = sphinx-build -n -W -b html -d docs/_build/doctrees docs docs/_build/html