these 2 derivations will be built:
  /nix/store/f6hb5wcv3g267an456d9a2pzhh9sjgxp-nix-grpc-store-0.2.2.drv
  /nix/store/13h06s9azpraivi0ppajwg9gzya6wybc-nix-grpc-store-dispatcher.drv