darwin.dyld: migrate to use darwin.sourceRelease

{

  lib,

  apple-sdk,

  ld64,

  mkAppleDerivation,

  cmake,

  fetchurl,

  ld64,

  llvm,

  mkAppleDerivation,

  openssl,

  pkgsBuildHost,

  pkg-config,

  pkgsBuildHost,

  pkgs,

  stdenvNoCC,

  fetchurl,

}:

let

    hash = "sha256-0ybVcwHuGEdThv0PPjYQc3SW0YVOyrM3/L9zG/l1Vtk=";

  };

  launchd = apple-sdk.sourceRelease "launchd";

  Libc = apple-sdk.sourceRelease "Libc";

  libplatform = apple-sdk.sourceRelease "libplatform";

  libpthread = apple-sdk.sourceRelease "libpthread";

  xnu = apple-sdk.sourceRelease "xnu";

  f =

    pkgs: prev:

    if !pkgs.stdenv.hostPlatform.isDarwin || pkgs.stdenv.name == "bootstrap-stage0-stdenv-darwin" then

      prev.darwin.sourceRelease

    else

      f pkgs.stdenv.__bootPackages pkgs;

  bootstrapSourceRelease = f pkgs pkgs;

  # TODO(reckenrode): Use `sourceRelease` after migration has been merged and all releases updated to the same version.

  launchd = bootstrapSourceRelease "launchd";

  Libc = bootstrapSourceRelease "Libc";

  libplatform = bootstrapSourceRelease "libplatform";

  libpthread = bootstrapSourceRelease "libpthread";

  xnu = bootstrapSourceRelease "xnu";

  privateHeaders = stdenvNoCC.mkDerivation {

    name = "dyld-deps-private-headers";