From 6505511f2e6b43a37570fc840f6d2851c7cc170c Mon Sep 17 00:00:00 2001
From: Craig Jennings <c@cjennings.net>
Date: Sun, 18 Jan 2026 10:55:18 -0600
Subject: Add grub-zfs-snap for ZFS snapshot boot entries

Add ability to boot into ZFS snapshots directly from GRUB menu:
- grub-zfs-snap: generates GRUB submenu entries for recent snapshots
- 40_zfs_snapshots: GRUB generator script installed to /etc/grub.d/
- zz-grub-zfs-snap.hook: pacman hook for automatic GRUB regeneration

The GRUB menu automatically updates after kernel/ZFS package changes.
Up to 10 most recent snapshots appear in a "ZFS Snapshots" submenu.
---
 custom/zz-grub-zfs-snap.hook | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 custom/zz-grub-zfs-snap.hook

(limited to 'custom/zz-grub-zfs-snap.hook')

diff --git a/custom/zz-grub-zfs-snap.hook b/custom/zz-grub-zfs-snap.hook
new file mode 100644
index 0000000..8153b84
--- /dev/null
+++ b/custom/zz-grub-zfs-snap.hook
@@ -0,0 +1,22 @@
+[Trigger]
+Type = Package
+Operation = Upgrade
+Operation = Install
+Operation = Remove
+Target = linux-lts
+Target = linux-lts-headers
+Target = zfs-dkms
+Target = zfs-utils
+Target = grub
+
+[Trigger]
+Type = Path
+Operation = Install
+Operation = Upgrade
+Operation = Remove
+Target = usr/lib/modules/*/vmlinuz
+
+[Action]
+Description = Updating GRUB with ZFS snapshots...
+When = PostTransaction
+Exec = /usr/local/bin/grub-zfs-snap
-- 
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