these 2 derivations will be built:
  /nix/store/fxdyivk5bip63s241ix2g2xxniqlbain-nix-grpc-store-0.1.0.drv
  /nix/store/ra5rdriqis4maic2m8yhawmyrm8j65j3-nix-grpc-store-exit-stress.drv