these 2 derivations will be built:
  /nix/store/z3w4za2h1qghaql7s0q7dmx668i9r8wm-nix-grpc-store-0.1.0.drv
  /nix/store/65a1h9l2nh4ixsfyiajplwg9s4k91c2d-nix-grpc-store-exit-stress.drv