#! /nix/store/izpf49b74i15pcr9708s3xdwyqs4jxwl-bash-5.2p32/bin/bash
# shellcheck shell=bash

case "$1" in
  -h|--help)
    exec man nixos-version
    exit 1
    ;;
  --hash|--revision)
    if ! [[ c04d5652cfa9742b1d519688f65d1bbccea9eb7e =~ ^[0-9a-f]+$ ]]; then
      echo "$0: Nixpkgs commit hash is unknown" >&2
      exit 1
    fi
    echo "c04d5652cfa9742b1d519688f65d1bbccea9eb7e"
    ;;
  --configuration-revision)
    if [[ "@configurationRevision@" =~ "@" ]]; then
      echo "$0: configuration revision is unknown" >&2
      exit 1
    fi
    echo "@configurationRevision@"
    ;;
  --json)
    cat <<EOF
{"nixosVersion":"24.11.20240919.c04d565","nixpkgsRevision":"c04d5652cfa9742b1d519688f65d1bbccea9eb7e"}
EOF
    ;;
  *)
    echo "24.11.20240919.c04d565 (Vicuna)"
    ;;
esac
