these 2 derivations will be built:
  /nix/store/jvy3nqm265i268gfgg7bkmiyvavkcdvw-nix-grpc-store-0.2.0.drv
  /nix/store/hskxbhv6mrmqmf1rh2a4x8mbry4g6wsp-nix-grpc-store-dispatcher.drv