these 2 derivations will be built:
  /nix/store/c3064qhm7956crv71z2p85m456f2hyxg-nix-grpc-store-0.1.0.drv
  /nix/store/hrf5k8vi5hpklpzg5cd2hgp54bf3f7qx-nix-grpc-store-dispatcher.drv