these 2 derivations will be built:
  /nix/store/ycdpax9dvs7gdym25vvvrs659wpk5c2w-beads-rust-0.5.7-vendor.drv
  /nix/store/0wp89g369bwvk3ab5wygk3gx9zrcq87r-beads-rust-0.5.7.drv