hors: fix darwin build

pkgs/development/tools/hors/default.nix

···
-{ lib, rustPlatform, fetchFromGitHub }:
+{ lib, rustPlatform, fetchFromGitHub, stdenv, Security }:
 
 rustPlatform.buildRustPackage rec {
   pname = "hors";
···
   };
 
   cargoSha256 = "sha256-1PB/JvgfC6qABI+cIePqtsSlZXPqMGQIay9SCXJkV9o=";
+
+  buildInputs = lib.optional stdenv.isDarwin Security;
 
   # requires network access
   doCheck = false;

pkgs/top-level/all-packages.nix

···
     gtk = gtk3;
   };
 
-  hors = callPackage ../development/tools/hors { };
+  hors = callPackage ../development/tools/hors {
+    inherit (darwin.apple_sdk.frameworks) Security;
+  };
 
   hover = callPackage ../development/tools/hover { };