these 2 derivations will be built:
  /nix/store/iwjwy6g4qvbhjfhdr2y259akp22l6qq2-nix-grpc-store-0.2.3.drv
  /nix/store/r7injhm9rgnjzyf817hkifh6igyabp04-nix-grpc-store-dispatcher.drv