these 2 derivations will be built:
  /nix/store/0hyqmb1gapjcjxwvza011vsxlc6gdi24-nix-grpc-store-0.2.0.drv
  /nix/store/794svxdq3rnah7846rx88xx41hrl9jsm-nix-grpc-store-dispatcher.drv