final: prev: let
  platform =
    final.lib.systems.examples.aarch64-multiplatform
    // {
      gcc = {arch = "armv8-a+crypto";};
    };
  arm64 = final.pkgsCross.aarch64-embedded;
  arm = final.pkgsCross.arm-embedded;
  uboot-hardkernel =
    arm64.callPackage ./hardkernel.nix {arm-gcc49 = arm.buildPackages.gcc49;};
  with-crypto = import final.path {crossSystem = platform;};
  meson64-tools = with-crypto.buildPackages.callPackage ./meson64-tools.nix {};
  blx_fix = arm64.buildPackages.callPackage ./blx_fix.nix {};
  uboot = arm64.callPackage ./u-boot.nix {
    inherit uboot-hardkernel meson64-tools blx_fix;
  };
in {
  uboot-hardkernel = uboot;
  ubootTools-hardkernel = final.buildPackages.ubootTools;
  buildPackages =
    prev.buildPackages
    // {
      ubootTools-hardkernel = final.buildPackages.buildPackages.ubootTools;
    };
}