these 2 derivations will be built:
  /nix/store/4yw2fx329yw5b13dih348g8k0zyga6ww-nix-grpc-store-0.2.3.drv
  /nix/store/3jdmf33dzlfjkmxwb4a9b4n2p0wm0mbp-nix-grpc-store-exit-stress.drv