these 2 derivations will be built:
  /nix/store/kk4aim4r6h6i7yf67842rv35gpqzav8c-nix-grpc-store-0.2.3.drv
  /nix/store/92wxhr5dy0rrd6v8cx490c8m52dyra2z-nix-grpc-store-dispatcher.drv