these 2 derivations will be built:
  /nix/store/rdsf04f4zba7qq42g7ni94fl8xfsyai8-nix-grpc-store-0.2.3.drv
  /nix/store/fsi60amn13wjw61y9k8dx9sq6yvfqrlf-nix-grpc-store-dispatcher.drv