these 2 derivations will be built:
  /nix/store/qymhckq635fyngfali02h9cl2gq03393-nix-grpc-store-0.2.3.drv
  /nix/store/rfpxbkcb8hs4mmwpyyjx49j3v6wgnb5p-nix-grpc-store-dispatcher.drv