build: use tox.pip to ensure all tox pins are the same

nedbat · nedbat · commit 84749fdf2ba5 · 2022-12-07T19:23:40.000-05:00
diff --git a/requirements/dev.in b/requirements/dev.in
@@ -8,7 +8,7 @@
 -r pip.pip
 
 # PyPI requirements for running tests.
-tox
+-r tox.pip
 -r pytest.pip
 
 # for linting.
