these 2 derivations will be built:
  /nix/store/h6hgsgzaghckssq3ahg22i66499kb6vn-nix-grpc-store-0.2.2.drv
  /nix/store/4fr8c0w3d44smda6k26lfyj1zi324n5g-nix-grpc-store-dispatcher.drv