these 2 derivations will be built:
  /nix/store/daslib4v9k5lww8sgmvsva2qijbz1rkk-nix-grpc-store-0.2.3.drv
  /nix/store/yhn5ycfh9md5rv73nx6mlqmnvv5l1zpb-nix-grpc-store-exit-stress.drv