these 2 derivations will be built:
  /nix/store/ys50443farrm9mj23xymkg04f7xaa1lz-nix-grpc-store-0.1.0.drv
  /nix/store/khh2jxh09zq01y03ls538bfh9himhzzp-nix-grpc-store-exit-stress.drv