these 2 derivations will be built:
  /nix/store/1janiqvbxjrg12v9yabnrb7vv3m6v4cg-nix-grpc-store-0.2.3.drv
  /nix/store/5xng40dkms7cdb12prmpri2lx8dihda4-nix-grpc-store-dispatcher.drv