diff --git a/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix b/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix
index 39b7d93ce0f2..bf8b990fe0d9 100644
--- a/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix
+++ b/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix
@@ -16,17 +16,16 @@ buildPythonPackage rec {
   version = "0.2.1";
   pyproject = true;
 
-  disabled = pythonOlder "3.7" || pythonAtLeast "3.12";
-
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-y0gBtGiQ6v+XKG4OP+xi0dUv/jF9FACDtjNqH7To+l4=";
   };
 
-  nativeBuildInputs = [ setuptools ];
+  build-system = [ setuptools ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     autobahn
+    setuptools # pkg_resources is referenced at runtime
     twisted
   ];
 
@@ -38,11 +37,15 @@ buildPythonPackage rec {
     twisted
   ];
 
+  __darwinAllowLocalNetworking = true;
+
   meta = {
     description = "Transit Relay server for Magic-Wormhole";
     homepage = "https://github.com/magic-wormhole/magic-wormhole-transit-relay";
     changelog = "https://github.com/magic-wormhole/magic-wormhole-transit-relay/blob/${version}/NEWS.md";
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.mjoerg ];
+    # Python 3.12 support: https://github.com/magic-wormhole/magic-wormhole-transit-relay/issues/35
+    broken = pythonOlder "3.7" || pythonAtLeast "3.12";
   };
 }