nixpkgs/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix

{ appleDerivation', stdenvNoCC, ed, unifdef }:

appleDerivation' stdenvNoCC {
  nativeBuildInputs = [ ed unifdef ];

  installPhase = ''
    export SRCROOT=$PWD
    export DSTROOT=$out
    export PUBLIC_HEADERS_FOLDER_PATH=include
    export PRIVATE_HEADERS_FOLDER_PATH=include
    bash xcodescripts/headers.sh
  '';
}