these 2 derivations will be built:
  /nix/store/rndj5yzkizn1y43r03avx2dy513ivv25-nix-grpc-store-0.2.1.drv
  /nix/store/m4j0ks55k0zps2hsy2f98313gicwb651-nix-grpc-store-dispatcher.drv