these 2 derivations will be built:
  /nix/store/2fzliwvysl194h7pyamy3i5n91pa7hmp-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/ybdiw79h9r08cggizwf1fhi60qx56n6f-nix-grpc-store-dispatcher.drv