these 2 derivations will be built:
  /nix/store/zrd73y5jqcvs63fmqflggws34c7vlw2c-nix-grpc-store-0.2.2.drv
  /nix/store/qlfjnxam6f9zpkifa8r43c959z6b3gm6-nix-grpc-store-dispatcher.drv