these 2 derivations will be built:
  /nix/store/widwzavxlghz72kvmfr34x3g5q1x3cs2-nix-grpc-store-0.2.0.drv
  /nix/store/s12lr3z4yjq1m8wm8vv389rk2xfbyjx8-nix-grpc-store-dispatcher.drv