these 2 derivations will be built:
  /nix/store/kdzg1rmy8jk6mkygswpcfx9rh1gxcg35-nix-grpc-store-0.1.0.drv
  /nix/store/nrp9rkvnggs4xb4hs9hrj2cdxchivz1k-nix-grpc-store-exit-stress.drv