these 2 derivations will be built:
  /nix/store/n43yvq15yhi78m6zrp9b5zx4kk8kkd83-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/w6wyd6ca6wkxbw8hqnw6llvscvyppwik-nix-grpc-store-exit-stress.drv