these 2 derivations will be built:
  /nix/store/nswxka4gzpn5kssmz62lfhwklnardw7n-nix-grpc-store-0.2.3.drv
  /nix/store/7k46aqy79smlp38hkd46wmydib3b202a-nix-grpc-store-exit-stress.drv