these 5 derivations will be built:
  /nix/store/1isb53zxhyh8g1yivqq2pvhgi39ddvcp-squashfs.img.drv
  /nix/store/03j4s5c8szx606vfad8py5v4ngzwr4zz-initrd.drv
  /nix/store/6wqpk9v2y3g99cs1q1hk3bx6a5dfv4ni-python3-static-x86_64-unknown-linux-musl-3.14.7.drv
  /nix/store/1pcr8w0qhbdkbxwfyhhbnmwrrfbkl7f1-iproute2-static-x86_64-unknown-linux-musl-7.1.0.drv
  /nix/store/i7i64qgia9k8m50z4agl006wblfsmdla-kexec-tarball.drv