these 2 derivations will be built:
  /nix/store/hcmqh7zp7xs65jvsxpnx93499kw55p4m-nix-grpc-store-0.2.2.drv
  /nix/store/b6fw343fig8ggfws98qchpp14wqjg6hc-nix-grpc-store-exit-stress.drv