these 2 derivations will be built:
  /nix/store/0vjkfk8mgv5qd3sa1h8skib3vgkw6hvi-rustd-0-unstable-2026-10-21-vendor.drv
  /nix/store/6k3wgcf9zxxwvrkllfwppysfqjq7i80f-rustd-0-unstable-2026-10-21.drv