these 2 derivations will be built:
  /nix/store/ybl95lzcma0vb2d9j44vli6yrrss82bd-nix-grpc-store-0.1.0.drv
  /nix/store/m1rg2cnxrajj0qq4i6fwh9rg049s478q-nix-grpc-store-exit-stress.drv