#!/bin/sh
# preinst — abort if make-install remnants detected (spec §7, §9).
# Dual marker: /var/lib/fenris/manifest.txt or /etc/systemd/system/fenris-collect.timer.
set -eu

MARKER1="/var/lib/fenris/manifest.txt"
MARKER2="/etc/systemd/system/fenris-collect.timer"

if [ -f "${MARKER1}" ] || [ -f "${MARKER2}" ]; then
    echo >&2
    echo >&2 "Fenris make-install remnants detected — refusing to install."
    echo >&2
    echo >&2 "Migrate to the package with:"
    echo >&2 "  sudo make uninstall   # removes make-install files, preserves store + config"
    echo >&2 "  sudo apt install fenris   # or: sudo dnf install fenris"
    echo >&2
    echo >&2 "See: https://git.bongbetic.com/xavierk/Fenris/blob/main/docs/spec/release-packaging.md#9-migration-from-make-install-systems"
    echo >&2
    exit 1
fi