these 2 derivations will be built:
  /nix/store/y4hvsi1xda03danwgrz8zzfzf7gmyp53-nix-grpc-store-0.1.0.drv
  /nix/store/n8qn4kckhas2i7yh03dar9fpipnm2v0j-nix-grpc-store-exit-stress.drv