Make tox factor usage more extensible

tox.ini

@@ -18,31 +18,36 @@ labels =
 # build a wheel, not a tarball, and use a common env to do it (so that the wheel is shared)
 package = wheel
 wheel_build_env = build_wheel
+deps = -r requirements/py{py_dot_ver}/test.txt
+commands = coverage run -m pytest {posargs}
+depends = coverage_clean,lint
 
+[testenv:py{3.14,3.13,3.12,3.11,3.10,3.9}-mindeps]
+deps = -r requirements/py{py_dot_ver}/test-mindeps.txt
+
+[testenv:py{3.14,3.13,3.12,3.11,3.10,3.9}-sphinxext]
 deps =
-    !mindeps: -r requirements/py{py_dot_ver}/test.txt
-    mindeps: -r requirements/py{py_dot_ver}/test-mindeps.txt
-    sphinxext: -r requirements/py{py_dot_ver}/docs.txt
-commands = coverage run -m pytest {posargs}
-depends =
-    py{3.14,3.13,3.12,3.11,3.10,3.9}{-mindeps,-sphinxext,}: coverage_clean, lint
-    coverage_report: py{3.14,3.13,3.12,3.11,3.10,3.9}{-mindeps,-sphinxext,}
+    -r requirements/py{py_dot_ver}/test.txt
+    -r requirements/py{py_dot_ver}/docs.txt
 
 [testenv:coverage_clean]
 dependency_groups = coverage
 skip_install = true
 commands = coverage erase
+depends =
 
 [testenv:coverage_report]
 dependency_groups = coverage
 skip_install = true
 commands_pre = -coverage combine
 commands = coverage report --skip-covered
+depends = py{3.14,3.13,3.12,3.11,3.10,3.9}{-mindeps,-sphinxext,}
 
 [testenv:lint]
 deps = pre-commit
 skip_install = true
 commands = pre-commit run --all-files
+depends =
 
 [testenv:mypy,mypy-{py3.9,py3.14}]
 deps = -r requirements/py{py_dot_ver}/typing.txt