these 2 derivations will be built:
  /nix/store/5h5ngykp61yzq20gw0iaplis44ph9a58-nix-grpc-store-0.2.3.drv
  /nix/store/dj7anqm5vw7n2fx3s4cbimzzrrhbygda-nix-grpc-store-dispatcher.drv