Update flake.nix

Signed-off-by: Dargon789 <64915515+Dargon789@users.noreply.github.com>

Author: Dargon789

flake.nix

@@ -19,8 +19,7 @@
 
           lib = pkgs.lib;
           toolchain = fenix.packages.${system}.stable.toolchain;
-        in
-        {
+        in {
           default = pkgs.mkShell {
             nativeBuildInputs = with pkgs; [
               pkg-config
@@ -29,16 +28,13 @@
               # test dependencies
               solc
               vyper
-              dprint
               nodejs
             ];
+            buildInputs = lib.optionals pkgs.stdenv.isDarwin
+              [ pkgs.darwin.apple_sdk.frameworks.AppKit ];
 
             packages = with pkgs; [ rust-analyzer-unwrapped ];
 
-            # Remove the hardening added by nix to fix jmalloc compilation error.
-            # More info: https://github.com/tikv/jemallocator/issues/108
-            hardeningDisable = [ "fortify" ];
-
             # Environment variables
             RUST_SRC_PATH = "${toolchain}/lib/rustlib/src/rust/library";
             LD_LIBRARY_PATH = lib.makeLibraryPath [ pkgs.libusb1 ];