pythonPackages: deprecate pytestrunner alias

pkgs/development/python-modules/cssselect2/default.nix

@@ -4,7 +4,7 @@
 , fetchPypi
 , tinycss2
 , pytest
-, pytestrunner
+, pytest-runner
 , pytest-cov
 , pytest-flake8
 , pytest-isort
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ tinycss2 ];
 
-  checkInputs = [ pytest pytestrunner pytest-cov pytest-flake8 pytest-isort ];
+  checkInputs = [ pytest pytest-runner pytest-cov pytest-flake8 pytest-isort ];
 
   meta = with lib; {
     description = "CSS selectors for Python ElementTree";