these 2 derivations will be built:
  /nix/store/vgnj0nljbm2sflg9bl81kg2v5qd030fs-nix-grpc-store-0.2.3.drv
  /nix/store/9ywpmb0m82g6v1ycfyv7jp636z27imqj-nix-grpc-store-dispatcher.drv