these 3 derivations will be built:
  /nix/store/j61q2b5azwh4kmy6fhvf6bzvrzb171r9-droid.drv
  /nix/store/klgpmvsgs8swwd1qs6yrb3r98icvyg4c-droid-1.1.0.drv
  /nix/store/jlgcax1pz03gqq9blclxgl1dfa5q81im-check-droid.drv