these 2 derivations will be built:
  /nix/store/g25mbl3547nmrxgifz5apnzy7b0hg9yi-nix-grpc-store-0.2.2.drv
  /nix/store/98y4x357m4c5vrv51pyprikha3p9x5h5-nix-grpc-store-dispatcher.drv