these 2 derivations will be built:
  /nix/store/9agvpcm1d6scf7wd9kfhjwrczyql5dn7-nix-grpc-store-0.2.1.drv
  /nix/store/dag9z5cb1wpnf5rc1nz3fvpicfzhfqdp-nix-grpc-store-dispatcher.drv