these 2 derivations will be built:
  /nix/store/x1awlq8lm3smqkg81vsidha9qlq68hmy-nix-grpc-store-0.1.0.drv
  /nix/store/y8w7s6nibd4369b79kbpyrgvhmhqhijw-nix-grpc-store-exit-stress.drv