these 2 derivations will be built:
  /nix/store/yrwxw42kkp27s409ap15isy2a7hqnljr-nix-grpc-store-0.2.3.drv
  /nix/store/3mxhqzjx0hgr93fbl2paz0ifsp5an19g-nix-grpc-store-exit-stress.drv