jnv: fix darwin build

pkgs/by-name/jn/jnv/package.nix

@@ -1,6 +1,8 @@
 { lib
 , rustPlatform
 , fetchFromGitHub
+, stdenv
+, darwin
 }:
 rustPlatform.buildRustPackage rec {
   pname = "jnv";
@@ -15,6 +17,8 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-xF0sxoSo7z7lxrF3wFAmU7edREoWKBFBnZ6Xq22c8q0=";
 
+  buildInputs = lib.optional stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreGraphics AppKit ]);
+
   meta = with lib; {
     description = "Interactive JSON filter using jq";
     mainProgram = "jnv";