these 2 derivations will be built:
  /nix/store/92qn7z0x29s85im1p42cyd2vs4b77bjn-nix-grpc-store-0.1.0.drv
  /nix/store/8z855301w9dazdajgq4yaacgpc2dvj18-nix-grpc-store-exit-stress.drv