these 2 derivations will be built:
  /nix/store/1p0jl597j7fbccik1qmpw9rkax42gvpp-nix-grpc-store-0.1.0.drv
  /nix/store/g0jmmnk9qrxw7q0znhpjyh8c9q5p26wv-nix-grpc-store-dispatcher.drv