these 2 derivations will be built:
  /nix/store/s9isd06w81ny00lrihbfrjzszz8g2whr-nix-grpc-store-0.1.0.drv
  /nix/store/agrp2afz9llm77h289ia51hhi2l2198k-nix-grpc-store-dispatcher.drv