these 3 derivations will be built:
  /nix/store/zi9qn18yq8lg8vkayz8pd5iys9gnyn3w-droid.drv
  /nix/store/vpzd9l0b3ywam144q7ccshsms1aclq12-droid-1.6.0.drv
  /nix/store/5y51w80fghgg2gf4mznnmhfrgnzg0549-check-droid.drv