these 2 derivations will be built:
  /nix/store/wc31kqknkmajvfldxjlvjr1wz7kdgxkc-nix-grpc-store-0.2.3.drv
  /nix/store/sbny6ngd0vpwndaxs1w6p22vvcwr5h6n-nix-grpc-store-exit-stress.drv