anchor.diff: -{ nixpkgs, libiconv }:
  +{ nixpkgs, libiconv, ghcIosArm64 }:
   
   { #TODO
     bundleName
  
positive.code:   hosts ? []
  }:
  
  nixpkgs.runCommand "${exeName}-app" (rec {
    inherit exePath;
    infoPlist = builtins.toFile "Info.plist" ''
      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  
negative.code:     fi
  
      mkdir -p $tmpdir
      cp -LR "$(dirname $0)/../${executableName}.app" $tmpdir
      chmod +w "$tmpdir/${executableName}.app"
      chmod +rw "$tmpdir/${executableName}.app/${executableName}"
      strip "$tmpdir/${executableName}.app/${executableName}"
      mkdir -p "$tmpdir/${executableName}.app/config"
      sed "s|<team-id/>|$TEAM_ID|" < "${xcent}" > $tmpdir/xcent
      /usr/bin/codesign --force --sign "$signer" --entitlements $tmpdir/xcent --timestamp=none "$tmpdir/${executableName}.app"
  
      /usr/bin/xcrun -sdk iphoneos ${./PackageApplication} -v "$tmpdir/${executableName}.app" -o "$IPA_DESTINATION" --sign "$signer" --embed "$EMBEDDED_PROVISIONING_PROFILE"
      /Applications/Xcode.app/Contents/Applications/Application\ Loader.app/Contents/Frameworks/ITunesSoftwareService.framework/Versions/A/Support/altool --validate-app -f "$IPA_DESTINATION" -t ios "$@"
    '';
    runInSim = builtins.toFile "run-in-sim" ''
  