anchor.diff: -{ lib, stdenv, fetchurl, unzip, setJavaClassPath, freetype }:
  +{ lib, stdenv, fetchurl, unzip, setJavaClassPath }:
   let
  +  # Details from https://www.azul.com/downloads/?version=java-11-lts&os=macos&package=jdk
  +  # Note that the latest build may differ by platform
  +  dist = {
  +    x86_64-darwin = {
  +      arch = "x64";
  +      zuluVersion = "11.48.21";
  +      jdkVersion = "11.0.11";
  +      sha256 = "0v0n7h7i04pvna41wpdq2k9qiy70sbbqzqzvazfdvgm3gb22asw6";
  +    };
  +
  +    aarch64-darwin = {
  +      arch = "aarch64";
  +      zuluVersion = "11.48.21";
  +      jdkVersion = "11.0.11";
  +      sha256 = "066whglrxx81c95grv2kxdbvyh32728ixhml2v44ildh549n4lhc";
  +    };
  +  }."${stdenv.hostPlatform.system}";
  +
     jce-policies = fetchurl {
       # Ugh, unversioned URLs... I hope this doesn't change often enough to cause pain before we move to a Darwin source build of OpenJDK!
       url    = "http://cdn.azul.com/zcek/bin/ZuluJCEPolicies.zip";
  
positive.code:   };
  
    jdk = stdenv.mkDerivation rec {
      name = "zulu11.43.21-ca-jdk11.0.9";
  
      src = fetchurl {
        url = "https://cdn.azul.com/zulu/bin/${name}-macosx_x64.tar.gz";
        sha256 = "1j19fb5mwdkfn6y8wfsnvxsz6wfpcab4xv439fqssxy520n6q4zs";
        curlOpts = "-H Referer:https://www.azul.com/downloads/zulu/zulu-mac/";
      };
  
      nativeBuildInputs = [ unzip ];
      buildInputs = [ freetype ];
  
      installPhase = ''
        mkdir -p $out
  
negative.code:       mkdir -p $out/nix-support
        printWords ${setJavaClassPath} > $out/nix-support/propagated-build-inputs
  
        # Set JAVA_HOME automatically.
        cat <<EOF >> $out/nix-support/setup-hook
        if [ -z "\''${JAVA_HOME-}" ]; then export JAVA_HOME=$out; fi
  