these 2 derivations will be built:
  /nix/store/km7vrwyg6rhsvr3q5yi2vlgf51c9h3y0-nix-grpc-store-0.2.0.drv
  /nix/store/l4mrvmsd9ip7a4c0xgbz0fi6ckg7zli7-nix-grpc-store-exit-stress.drv