these 2 derivations will be built:
  /nix/store/pi4iks144x9czd6rqrifs8ik3b52n2v3-nix-grpc-store-0.1.0.drv
  /nix/store/nl6igga8fs2zp5l864jv8kssr35d3qva-nix-grpc-store-exit-stress.drv