these 2 derivations will be built:
  /nix/store/km7vrwyg6rhsvr3q5yi2vlgf51c9h3y0-nix-grpc-store-0.2.0.drv
  /nix/store/kxyb49lbfzk1aj22bif6zxzginmk6ib7-nix-grpc-store-dispatcher.drv