1 files changed, 9 insertions, 0 deletions
diff --git a/pkgs/development/python-modules/flufl/bounce.nix b/pkgs/development/python-modules/flufl/bounce.nix
index f331c0705cd21..b514947d8e3bf 100644
--- a/pkgs/development/python-modules/flufl/bounce.nix
+++ b/pkgs/development/python-modules/flufl/bounce.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  fetchpatch2,
   setuptools,
   atpublic,
   zope-interface,
@@ -19,6 +20,14 @@ buildPythonPackage rec {
     hash = "sha256-JVBK65duwP5aGc1sQTo0EMtRT9zb3Kn5tdjTQ6hgODE=";
   };
 
+  patches = [
+    (fetchpatch2 {
+      # Replace deprecated failIf with assertFalse for Python 3.12 compatibility.
+      url = "https://gitlab.com/warsaw/flufl.bounce/-/commit/e0b9fd0f24572e024a8d0484a3c9fb4542337d18.patch";
+      hash = "sha256-HJHEbRVjiiP5Z7W0sQCj6elUMyaWOTqQw6UpYOYCVZM=";
+    })
+  ];
+
   nativeBuildInputs = [ setuptools ];
 
   propagatedBuildInputs = [