these 2 derivations will be built:
  /nix/store/7p6kifmy0mmvfb6rx7rscmm4sd4ir0gs-nix-grpc-store-0.1.0.drv
  /nix/store/f9xw8ymmch24zkiknkl8k2cfwqjn1x87-nix-grpc-store-dispatcher.drv