these 2 derivations will be built:
  /nix/store/8in6aqs1awy0mdpmv7kmyw5dkyhypc7w-nix-grpc-store-0.2.0.drv
  /nix/store/v97wvr1mz0zgj88rj5s3fp7g5pj0nd5h-nix-grpc-store-dispatcher.drv