python{313,314}Packages.matplotlib: work around ld64 hardening issue

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

@@ -62,6 +62,9 @@
 
   # Reverse dependency
   sage,
+
+  # TODO: Clean up on `staging`.
+  llvmPackages,
 }:
 
 let
@@ -104,7 +107,12 @@ buildPythonPackage (finalAttrs: {
         --replace-fail libwayland-client.so.0 ${wayland}/lib/libwayland-client.so.0
     '';
 
-  nativeBuildInputs = [ pkg-config ] ++ lib.optionals enableGtk3 [ gobject-introspection ];
+  nativeBuildInputs = [
+    pkg-config
+  ]
+  ++ lib.optionals enableGtk3 [ gobject-introspection ]
+  # TODO: Clean up on `staging`.
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.lld ];
 
   buildInputs = [
     ffmpeg-headless
@@ -160,6 +168,11 @@ buildPythonPackage (finalAttrs: {
     b_lto = false;
   };
 
+  # TODO: Clean up on `staging`.
+  env.${if stdenv.hostPlatform.isDarwin then "CC_LD" else null} = "lld";
+  env.${if stdenv.hostPlatform.isDarwin then "CXX_LD" else null} = "lld";
+  env.${if stdenv.hostPlatform.isDarwin then "OBJC_LD" else null} = "lld";
+
   passthru.tests = {
     inherit sage;
   };