these 2 derivations will be built:
  /nix/store/y2dm9fdzviyvyvbyx7m8z2cpxvq1zgc5-nix-grpc-store-0.1.0.drv
  /nix/store/7vcgjpik3cikf4xhqx39z6gcszrkl0d8-nix-grpc-store-dispatcher.drv