these 2 derivations will be built:
  /nix/store/rzwqma14cbd5lca7rcqybd1d3kq98ib9-nix-grpc-store-0.1.0.drv
  /nix/store/a2ir0iwbj8jlbiyblzqnxfl4xx283vai-nix-grpc-store-exit-stress.drv