python3Packages.screeninfo: fix darwin build (#478996)

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

@@ -7,6 +7,8 @@
   libXinerama,
   libXrandr,
   poetry-core,
+  pyobjc-framework-Cocoa,
+  cython,
   pytestCheckHook,
 }:
 
@@ -22,9 +24,14 @@ buildPythonPackage rec {
     hash = "sha256-TEy4wff0eRRkX98yK9054d33Tm6G6qWrd9Iv+ITcFmA=";
   };
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  postPatch = ''
+  dependencies = lib.optionals (stdenv.isDarwin) [
+    pyobjc-framework-Cocoa
+    cython
+  ];
+
+  postPatch = lib.optionalString (stdenv.isLinux) ''
     substituteInPlace screeninfo/enumerators/xinerama.py \
       --replace 'load_library("X11")' 'ctypes.cdll.LoadLibrary("${libX11}/lib/libX11.so")' \
       --replace 'load_library("Xinerama")' 'ctypes.cdll.LoadLibrary("${libXinerama}/lib/libXinerama.so")'
@@ -43,7 +50,6 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "screeninfo" ];
 
   meta = {
-    broken = stdenv.hostPlatform.isDarwin;
     description = "Fetch location and size of physical screens";
     homepage = "https://github.com/rr-/screeninfo";
     license = lib.licenses.mit;