these 2 derivations will be built:
  /nix/store/54y1wavcyy3fyqkygfvsfqpbmgc6rbfs-nix-grpc-store-0.2.3.drv
  /nix/store/hakhq1zkr2jg5lbym90zqm8xppqdblg4-nix-grpc-store-dispatcher.drv