these 2 derivations will be built:
  /nix/store/ar19vmpykl4brc36ks9gczs3x2nj7qfx-nix-grpc-store-0.1.0.drv
  /nix/store/9dn3p905igzqy20pga5p8l4zdap9lns3-nix-grpc-store-exit-stress.drv