these 2 derivations will be built:
  /nix/store/hfzmgr58yfwpgnxxib4z2r56ylka3nij-nix-grpc-store-0.2.3.drv
  /nix/store/g4cx5f9nxxh3aibhphkxqdq0avq7rryi-nix-grpc-store-dispatcher.drv