these 2 derivations will be built:
  /nix/store/9yf62jkwk5zfv2c5msdm3zrhld4pgqiw-nix-grpc-store-0.1.0.drv
  /nix/store/zygs1l8q13wvwi1ycsc78q1p5dbrfzkz-nix-grpc-store-exit-stress.drv