these 2 derivations will be built:
  /nix/store/47q1qk0p9wjackihrqglclcx93m1ckq2-nix-grpc-store-0.2.3.drv
  /nix/store/v13drp6kw56krk5qa9zz16wd8liansbd-nix-grpc-store-dispatcher.drv