these 2 derivations will be built:
  /nix/store/5y9sanw3fjmxvnvjk6haajadnvxr2qvc-nix-grpc-store-0.2.3.drv
  /nix/store/h36s84dzfjr0lj1y233si46c4dfvbqxd-nix-grpc-store-dispatcher.drv