linuxlab.nix/installer/installer.nix

{ writers, target, ... }:

writers.writeBash "installer" ''
  set -o errexit
  set -o nounset
  set -o pipefail

  set -x

  "${target.config.system.build.diskoScript}"

  "${target.config.system.build.nixos-install}/bin/nixos-install" \
    --root /mnt \
    --system "${target.config.system.build.toplevel}" \
    --no-channel-copy \
    --no-root-password \
    --verbose
''