these 2 derivations will be built:
  /nix/store/2jg8nxh7n835crwn9pyr1z4nhfvqcmx7-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/4zzbqq869jc5b08acqla9lq9l4wj266a-nix-grpc-store-dispatcher.drv