python3Packages.protobuf: propagate pkgs.protobuf (#349270)

pkgs/development/python-modules/protobuf/default.nix

@@ -3,6 +3,7 @@
   fetchPypi,
   lib,
   setuptools,
+  protobuf,
 }:
 
 buildPythonPackage rec {
@@ -17,6 +18,10 @@ buildPythonPackage rec {
 
   build-system = [ setuptools ];
 
+  propagatedNativeBuildInputs = [
+    protobuf
+  ];
+
   # the pypi source archive does not ship tests
   doCheck = false;
 

pkgs/top-level/python-packages.nix

@@ -10733,7 +10733,9 @@ self: super: with self; {
   };
 
   # Protobuf 5.x
-  protobuf5 = callPackage ../development/python-modules/protobuf/default.nix { };
+  protobuf5 = callPackage ../development/python-modules/protobuf/default.nix {
+    inherit (pkgs.__splicedPackages) protobuf;
+  };
 
   # If a protobuf upgrade causes many Python packages to fail, please pin it here to the previous version.
   protobuf = protobuf5;