these 2 derivations will be built:
  /nix/store/rmx7v3ycghs2bfk26wwvx808clj1sfp9-nix-grpc-store-0.2.3.drv
  /nix/store/w4hblardgbh9sycnxq9jh39cklvglnfs-nix-grpc-store-exit-stress.drv