these 2 derivations will be built:
  /nix/store/169379c0swn36d8k50z4jzqkgcxn60ix-beads-rust-0.5.3-vendor.drv
  /nix/store/n8lg59xs2vvdr3vsynpjghw7lgvj59kp-beads-rust-0.5.3.drv