1 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/development/python-modules/backports_weakref/default.nix b/pkgs/development/python-modules/backports_weakref/default.nix
index 4db504ac330..a0cbe6d4b84 100644
--- a/pkgs/development/python-modules/backports_weakref/default.nix
+++ b/pkgs/development/python-modules/backports_weakref/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , setuptools-scm
 # , backports
-, python
+, unittestCheckHook
 }:
 
 buildPythonPackage rec {
@@ -20,9 +20,9 @@ buildPythonPackage rec {
   # Requires backports package
   doCheck = false;
 
-  checkPhase = ''
-    ${python.interpreter} -m unittest discover tests
-  '';
+  checkInputs = [ unittestCheckHook ];
+
+  unittestFlagsArray = [ "tests" ];
 
   meta = with lib; {
     description = "Backports of new features in Python’s weakref module";