fix nits; remove a transifex dependency in tox

Author: shimizukawa

tox.ini

@@ -14,7 +14,7 @@ python =
     3.13: py313
 
 [testenv]
-deps=-e.[transifex,test]
+deps=-e.[test]
 setenv =
     BUILD_TEST_PATH = {envdir}/tests
     HOME={envdir}
@@ -31,12 +31,25 @@ usedevelop=True
 deps=mypy
 commands=mypy sphinx_intl
 
-[testenv:sdist]
+[testenv:dist]
 usedevelop=True
 deps=
-    docutils
-    wheel
-commands={envpython} setup.py -q check -r -s sdist bdist_wheel
+    build
+    twine
+commands=
+    {envpython} -m build
+    twine check dist/*
+
+[testenv:release]
+deps=
+    build
+    twine
+allowlist_externals=mv
+commands=
+    -mv setup.cfg setup.cfg_
+    {envpython} -m build
+    -mv setup.cfg_ setup.cfg
+    twine check dist/*
 
 [flake8]
 # show-pep8=true