these 2 derivations will be built:
  /nix/store/rxl2nh7zdrpp35zfik71m0g5x9d5zm2x-nix-grpc-store-0.2.3.drv
  /nix/store/6il6mvdykk09ckgyn64ks9ix16088hc8-nix-grpc-store-exit-stress.drv