python3Packages.watchdog: fix darwin-x86_64 build

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

@@ -20,6 +20,10 @@ buildPythonPackage rec {
     sha256 = "sha256-P9R4FTU76cRO68lMwo/iaysMW9iJ2vxKWny9+SQUNIA=";
   };
 
+  patches = lib.optionals (stdenv.isDarwin && !stdenv.isAarch64) [
+    ./watchdog-force-kqueue.patch
+  ];
+
   buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
 
   propagatedBuildInputs = [
@@ -58,8 +62,5 @@ buildPythonPackage rec {
     homepage = "https://github.com/gorakhargosh/watchdog";
     license = licenses.asl20;
     maintainers = with maintainers; [ goibhniu ];
-    # error: use of undeclared identifier 'kFSEventStreamEventFlagItemCloned'
-    # builds fine on aarch64-darwin
-    broken = stdenv.isDarwin && !stdenv.isAarch64;
   };
 }

pkgs/development/python-modules/watchdog/watchdog-force-kqueue.patch

@@ -0,0 +1,13 @@
+diff --git a/setup.py b/setup.py
+index 072dfc8..cb9aa7a 100644
+--- a/setup.py
++++ b/setup.py
+@@ -39,7 +39,7 @@ _apple_devices = ('appletv', 'iphone', 'ipod', 'ipad', 'watch')
+ is_macos = sys.platform == 'darwin' and not machine().lower().startswith(_apple_devices)
+ 
+ ext_modules = []
+-if is_macos or os.getenv('FORCE_MACOS_MACHINE', '0') == '1':
++if False:
+     ext_modules = [
+         Extension(
+             name='_watchdog_fsevents',