these 2 derivations will be built:
  /nix/store/zxc8zmg1pmmw01id0ckrpadnvr5h7v6v-nix-grpc-store-0.1.0.drv
  /nix/store/hl18znzm1r1imafknxbdra3hncf1mckw-nix-grpc-store-dispatcher.drv