Add tox-ini-fmt pre-commit hook (#496)

Author: adamchainz

.pre-commit-config.yaml

@@ -23,6 +23,10 @@ repos:
   - id: setup-cfg-fmt
     args:
     - --include-version-classifiers
+- repo: https://github.com/tox-dev/tox-ini-fmt
+  rev: 1.3.0
+  hooks:
+  - id: tox-ini-fmt
 - repo: https://github.com/rstcheck/rstcheck
   rev: v6.1.2
   hooks:

tox.ini

@@ -1,14 +1,17 @@
 [tox]
-envlist =
-    py{37,38,39,310,311}
+requires =
+    tox>=4.2
+env_list =
+    py{311, 310, 39, 38, 37}
 
 [testenv]
+deps =
+    -r requirements/{envname}.txt
+set_env =
+    PYTHONDEVMODE = 1
 commands =
-  python \
-    -W error::ResourceWarning \
-    -W error::DeprecationWarning \
-    -W error::PendingDeprecationWarning \
-    -m pytest {posargs:tests}
-deps = -r requirements/{envname}.txt
-setenv =
-    PYTHONDEVMODE=1
+    python \
+      -W error::ResourceWarning \
+      -W error::DeprecationWarning \
+      -W error::PendingDeprecationWarning \
+      -m pytest {posargs:tests}