these 2 derivations will be built:
  /nix/store/6107y5fnx4s0b5lyznw4bv1ihvn7q97i-nix-grpc-store-0.1.0.drv
  /nix/store/6asagx9ni72ch02gqpi2kwc8yviail8b-nix-grpc-store-exit-stress.drv