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-rw-r--r--pkgs/development/python-modules/variants/default.nix7
1 files changed, 3 insertions, 4 deletions
diff --git a/pkgs/development/python-modules/variants/default.nix b/pkgs/development/python-modules/variants/default.nix
index 2055a48134472..e23407ab06b36 100644
--- a/pkgs/development/python-modules/variants/default.nix
+++ b/pkgs/development/python-modules/variants/default.nix
@@ -3,8 +3,7 @@
 , fetchPypi
 , pytest-runner
 , setuptools-scm
-, singledispatch ? null
-, pytest
+, pytestCheckHook
 , lib
 }:
 
@@ -23,8 +22,8 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    pytest
-  ] ++ lib.optionals isPy27 [ singledispatch ];
+    pytestCheckHook
+  ];
 
   meta = with lib; {
     description = "Library providing syntactic sugar for creating variant forms of a canonical function";