1 files changed, 13 insertions, 1 deletions
diff --git a/pkgs/development/python-modules/chai/default.nix b/pkgs/development/python-modules/chai/default.nix
index 6146ec692c75f..756a2ab0868bc 100644
--- a/pkgs/development/python-modules/chai/default.nix
+++ b/pkgs/development/python-modules/chai/default.nix
@@ -1,4 +1,8 @@
-{ lib, buildPythonPackage, fetchPypi }:
+{
+  lib,
+  buildPythonPackage,
+  fetchPypi,
+}:
 
 buildPythonPackage rec {
   pname = "chai";
@@ -10,6 +14,14 @@ buildPythonPackage rec {
     sha256 = "ff8d2b6855f660cd23cd5ec79bd10264d39f24f6235773331b48e7fcd637d6cc";
   };
 
+  postPatch = ''
+    # python 3.12 compatibility
+    substituteInPlace tests/*.py \
+      --replace "assertEquals" "assertEqual" \
+      --replace "assertNotEquals" "assertNotEqual" \
+      --replace "assert_equals" "assert_equal"
+  '';
+
   meta = with lib; {
     description = "Mocking, stubbing and spying framework for python";
   };