these 2 derivations will be built:
  /nix/store/ajn2dypq2bx43ci0fx6v5p3jc1rgs7bf-nix-grpc-store-0.2.3.drv
  /nix/store/qm0pirdp804wbz22mvvkzibbkd43cknp-nix-grpc-store-dispatcher.drv