these 2 derivations will be built:
  /nix/store/yjcvr4dcvam3cxykwvk10nqdl5rwskkq-ZCode-3.9.1-linux-arm64.deb.drv
  /nix/store/js4qlg67ncmn0b8s805d2y86820y3frj-zcode-3.9.1.drv