these 3 derivations will be built:
  /nix/store/y9rglvpbbgmnmk6a3g5m6hz92x0kbaby-droid.drv
  /nix/store/zzjcc8priyql8bw9c5zx071hpspxa1if-droid-1.9.0.drv
  /nix/store/kyz4hq7bajrsqpc8frma01v0zbz1hw7s-check-droid.drv