aws-sdk-cpp: propagate Security framework

We need to propagate the Security framework to avoid getting

ld: file not found: /System/Library/Frameworks/Security.framework/Versions/A/Security for architecture x86_64

on linking aws-sdk-cpp libraries.

pkgs/development/libraries/aws-c-cal/default.nix

@@ -13,7 +13,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = [ aws-c-common openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ aws-c-common openssl ];
+
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"