these 2 derivations will be built:
  /nix/store/sknpmwvgjbksm7h3nv6niw6d39p9rbgl-nix-grpc-store-0.2.3.drv
  /nix/store/62ad108zd26sg6hrq5l93lf730hxp69l-nix-grpc-store-dispatcher.drv