these 2 derivations will be built:
  /nix/store/0xx1zkwgx5iahjmclbp89mz5j07laz5k-nix-grpc-store-0.2.3.drv
  /nix/store/4ckms3h5fpmpkgw1q8d0cl9skass6ilm-nix-grpc-store-exit-stress.drv