these 2 derivations will be built:
  /nix/store/sghw1q7xbaps9is608pf954zbmbl9ry4-nix-grpc-store-0.2.0.drv
  /nix/store/lcp1npcd4dawjb2gfdmyxwgpi4fsv1fw-nix-grpc-store-exit-stress.drv