isort requires pip install

Author: mar10

tox.ini

@@ -56,7 +56,7 @@ commands =
 
 
 [testenv:lint]
-skip_install = true
+# skip_install = true
 deps =
     ruff
 commands =
@@ -67,7 +67,7 @@ commands =
 
 [testenv:format]
 description = Reformat python code using ruff (Black, isort, and pyupgrade)
-; # skip_install = true
+# skip_install = true
 deps =
     ruff
 allowlist_externals =