these 2 derivations will be built:
  /nix/store/6c9d0cwbvgf3dxx37fibcxw2wjwc8ib7-nix-grpc-store-0.2.2.drv
  /nix/store/pvz2b1g1s4l2rp15xm67c0qldshj8icc-nix-grpc-store-exit-stress.drv