these 2 derivations will be built:
  /nix/store/ymv2cvyji1xvfjx17l9nkhm39vgqzcsv-nix-grpc-store-0.1.0.drv
  /nix/store/fm30lw6qv5x82bds82r50vy70r67xzl5-nix-grpc-store-dispatcher.drv