diff --git a/pkgs/os-specific/darwin/xcode/sdk-pkgs.nix b/pkgs/os-specific/darwin/xcode/sdk-pkgs.nix
index b848265736e6..bb9dc0a03b5f 100644
--- a/pkgs/os-specific/darwin/xcode/sdk-pkgs.nix
+++ b/pkgs/os-specific/darwin/xcode/sdk-pkgs.nix
@@ -43,6 +43,7 @@ rec {
     cc = clang-unwrapped;
     bintools = binutils;
     libc = targetIosSdkPkgs.libraries;
+    extraPackages = [ "${sdk}/System" ];
     extraBuildCommands = ''
       tr '\n' ' ' < $out/nix-support/cc-cflags > cc-cflags.tmp
       mv cc-cflags.tmp $out/nix-support/cc-cflags