these 2 derivations will be built:
  /nix/store/q0dys73i6gnl8rfg1wsihvrn86m2lbcg-nix-grpc-store-0.2.2.drv
  /nix/store/w0mlc6r8c09da2ams5dqahqw0hd9h8rc-nix-grpc-store-dispatcher.drv