these 2 derivations will be built:
  /nix/store/04lh8r6cplzgcsldfzx7j3g25ggxfr2j-nix-grpc-store-0.2.3.drv
  /nix/store/1lf7c4cqalvr1x78yblm17a3q8in4mh3-nix-grpc-store-dispatcher.drv