these 2 derivations will be built:
  /nix/store/phb3997d0a7yhpxgdcsd9jbb2jgdr5y7-nix-grpc-store-0.2.2.drv
  /nix/store/r1f91aj7n8dxpz94g09x851g4q4fdjaq-nix-grpc-store-dispatcher.drv