python311Packages.pytest-shutil: only requires contextlib2 on Python 2

see man-group/pytest-plugins#144

Author: dotlambda

pkgs/development/python-modules/pytest-shutil/default.nix

@@ -11,7 +11,6 @@
 , mock
 , path
 , execnet
-, contextlib2
 , termcolor
 , six
 
@@ -32,6 +31,7 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace setup.py \
+      --replace "contextlib2" 'contextlib2;python_version<"3"' \
       --replace "path.py" "path"
   '';
 
@@ -44,7 +44,6 @@ buildPythonPackage rec {
     mock
     path
     execnet
-    contextlib2
     termcolor
     six
   ];