these 2 derivations will be built:
  /nix/store/9jfj00sbsh4ss7d0ipk95vp2w4q8wzad-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/kpy4g8nxky3z3hhz56q48g58y5q31mz0-nix-grpc-store-exit-stress.drv