these 2 derivations will be built:
  /nix/store/smy02jv0j5z6lkfqp73q6yjqwgaq1xmd-nix-grpc-store-0.2.3.drv
  /nix/store/7y3bs81vhb8sbgrghvqbwvdd3gbw561r-nix-grpc-store-dispatcher.drv