these 2 derivations will be built:
  /nix/store/1ba0d1ghhnym5mcyn92iqsp4dd9cjwkz-nix-grpc-store-0.1.0.drv
  /nix/store/r0ffi6k7gmxn2xdknkjxfmbzkamg5wnp-nix-grpc-store-exit-stress.drv