these 2 derivations will be built:
  /nix/store/lnxr33qq1y6gn5qfzm8kaap0x7443kpg-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/imlxxrgcgjfdqwsiw0d788jlf3fazxl5-nix-grpc-store-exit-stress.drv