these 2 derivations will be built:
  /nix/store/qpvbkmg3jja5q5b3z7f755rhwswb7vqf-nix-grpc-store-0.1.1.drv
  /nix/store/k6pi4s8ra0sp4rq7mhpapwvx6ir1kwl3-nix-grpc-store-dispatcher.drv