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kontra/deploy/revert-kontra-nix.sh

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#!/usr/bin/env bash
# Revert ALL Kontra additions from /etc/nixos/configuration.nix on .13.
# Restores the untouched pre-Kontra backup, then rebuilds (removes systemd kontra + pull + caddy vhosts).
# Run as: sudo bash revert-kontra-nix.sh
set -euo pipefail
CFG=/etc/nixos/configuration.nix
PRE=/etc/nixos/configuration.nix.bak-kontra-20260908-195305 # first backup = pre-Kontra (no additions)
if [ ! -f "$PRE" ]; then
echo "!! pre-Kontra backup not found at $PRE — aborting (nothing reverted)."
exit 1
fi
# Safety: confirm the CURRENT file actually contains Kontra markers before overwriting
if ! grep -q "KONTRA" "$CFG"; then
echo "!! Current configuration.nix has no Kontra markers. Leaving as-is."
exit 0
fi
echo "== restoring pre-Kontra configuration.nix"
cp -a "$PRE" "$CFG"
echo " restored. Kontra markers now: $(grep -c CONTRA "$CFG" || true)"
echo "== Nix syntax check"
nix-instantiate --parse "$CFG" >/dev/null && echo "OK" || { echo "SYNTAX FAIL — no change made"; exit 1; }
echo "== nixos-rebuild switch (removes kontra service + timer + caddy vhosts)"
nixos-rebuild switch --show-trace 2>&1 | tail -20
echo "== confirm removal"
systemctl --no-pager list-units --all 2>/dev/null | grep -i kontra || echo " no kontra units (clean)"
echo "DONE — Kontra Nix additions reverted."