unicorn: fix darwin build (#146346)

pkgs/development/libraries/unicorn/default.nix

···
 , fetchFromGitHub
 , pkg-config
 , cmake
+, IOKit
 }:
 
 stdenv.mkDerivation rec {
···
   };
 
   nativeBuildInputs = [ pkg-config cmake ];
+  buildInputs = lib.optionals stdenv.isDarwin [ IOKit ];
 
   meta = with lib; {
     description = "Lightweight multi-platform CPU emulator library";

pkgs/top-level/all-packages.nix

···
     withRedis = true;
   };
 
-  unicorn = callPackage ../development/libraries/unicorn { };
+  unicorn = callPackage ../development/libraries/unicorn {
+    inherit (darwin.apple_sdk.frameworks) IOKit;
+  };
 
   units = callPackage ../tools/misc/units {
     enableCurrenciesUpdater = true;