these 2 derivations will be built:
  /nix/store/kf5p9pd0n87n3ifqnarjyl5h0s2wwwxd-nix-grpc-store-0.2.0.drv
  /nix/store/hpky3zvyjdvh1mzpi3256v8k5apwfrv2-nix-grpc-store-dispatcher.drv