these 2 derivations will be built:
  /nix/store/fvgbdac1w28lifwb7qh02hvzsilavl83-nix-grpc-store-0.2.3.drv
  /nix/store/qj51x16lfrslls9z015my2h344vz3czx-nix-grpc-store-dispatcher.drv