these 2 derivations will be built:
  /nix/store/m3z35kxb2cmyh83rn47nja704xysbfdn-nix-grpc-store-0.1.0.drv
  /nix/store/s8jfd3792xmq6pbirklkx1jlwm6gymrm-nix-grpc-store-exit-stress.drv