these 2 derivations will be built:
  /nix/store/2ig9662d8mmidmv4qnmlvidkabmrjqzh-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/4j5siashfsmvrcdmbqzkscpq0cm37vmv-nix-grpc-store-dispatcher.drv