these 2 derivations will be built:
  /nix/store/jxix3qw6pxjd8d4sy52r53d9p6igypmc-ZCode-3.9.2-linux-arm64.deb.drv
  /nix/store/hngmqpvxsgwk4fdcw5ji60g5d4d1mlw7-zcode-3.9.2.drv