these 2 derivations will be built:
  /nix/store/5d7ymnidmy97nczzagmbhdxd1xclq181-nix-grpc-store-0.2.2.drv
  /nix/store/06i5xlwkawp3bzaa2vbwwgg6vylfgx4q-nix-grpc-store-dispatcher.drv