these 2 derivations will be built:
  /nix/store/rnmnzdik5n16i9brnwyr7231mlpkvb24-nix-grpc-store-0.1.0.drv
  /nix/store/rscpc9xm163w82d1dh58fxw5wm67kfnm-nix-grpc-store-dispatcher.drv