these 4 derivations will be built:
  /nix/store/p5ynixpx6kb3nkpzw3fcpvcs3kw4hw2w-Cargo.toml.drv
  /nix/store/dww093dm0z9ljjfjkllg6nkav5jbh6wv-source.drv
  /nix/store/00ily364l1calwancjy75cm7a4wdzp4m-iets-deps-static-aarch64-unknown-linux-musl-0.2.0.drv
  /nix/store/m5gjll8fivbn1kql0vqy046m1y8kxq99-iets-static-aarch64-unknown-linux-musl-0.2.0.drv