set -e
umask 077
target=/nix/store/11y992kp7bikr5hg21i2azfvmca43i7i-nixos-system-nixos-26.11.20260919.20b1ddd
new=/var/lib/k230/panel-reconciled-trial-20260926/new
previous=/var/lib/k230/panel-trial-20260926/previous
test "$(readlink -f /run/booted-system)" = "$target"
test "$(readlink -f /run/current-system)" = "$target"
profile_before=$(readlink -f /nix/var/nix/profiles/system)
test -x "$profile_before/init"
ln -sfn "$profile_before" /nix/var/nix/gcroots/k230-panel-hs-profile-before
cd "$new"
sha256sum -c SHA256SUMS
cd /boot
sha256sum -c "$previous/SHA256SUMS"
for name in Image initrd.uimg k230-tdisplay.dtb bootargs.txt; do
 cp "$new/$name" "/boot/.k230-panel-next-$name"
done
sync
started=0
rollback() {
 status=$?
 trap - EXIT
 if [ "$status" -ne 0 ] && [ "$started" -eq 1 ]; then
  set +e
  restore_failed=0
  for name in Image initrd.uimg k230-tdisplay.dtb bootargs.txt; do
   cp "$previous/$name" "/boot/$name" || restore_failed=1
  done
  nix-env --profile /nix/var/nix/profiles/system --set "$profile_before" || restore_failed=1
  cd /boot || restore_failed=1
  sha256sum -c "$previous/SHA256SUMS" || restore_failed=1
  test "$(readlink -f /nix/var/nix/profiles/system)" = "$profile_before" || restore_failed=1
  sync || restore_failed=1
  if [ "$restore_failed" -eq 0 ]; then
   echo K230_PERSIST_ROLLBACK_VERIFIED
  else
   echo K230_PERSIST_ROLLBACK_INCOMPLETE
  fi
 fi
 exit "$status"
}
trap rollback EXIT
started=1
for name in Image initrd.uimg k230-tdisplay.dtb bootargs.txt; do
 mv "/boot/.k230-panel-next-$name" "/boot/$name"
done
sha256sum -c "$new/SHA256SUMS"
for name in fw_jump_add_uboot_head.bin force_dtb lcd_dtb hdmi_dtb; do
 cmp "$previous/$name" "/boot/$name"
done
nix-env --profile /nix/var/nix/profiles/system --set "$target"
test "$(readlink -f /nix/var/nix/profiles/system)" = "$target"
sync
trap - EXIT
echo K230_PERSIST_OK