Add akshara.install, update akshara.hook

akshara.hook

@@ -9,6 +9,11 @@ run_latehook() {
         mv /new_root/usr /new_root/.old.usr
         mv /new_root/mnt/iso-update/squashfs-root/usr /new_root/usr
 
+        # Same for /var/lib.
+        mv /new_root/var/lib /new_root/.old.var.lib
+        mv /new_root/mnt/iso-update/squashfs-root/var/lib /new_root/var
+
+        # Move to /etc stage.
         rm -f /new_root/mnt/iso-update/.ready-for-update
         touch /new_root/mnt/iso-update/.etc-stage
     fi
@@ -23,5 +28,18 @@ run_latehook() {
 
         # Only copy non-existent files.
         cp -a -n /new_root/mnt/iso-update/squashfs-root/etc/* /new_root/etc
+
+        # Update pacman config.
+        cp /new_root/mnt/iso-update/squashfs-root/etc/pacman.conf /new_root/etc
+        rm -rf /new_root/etc/pacman.d
+        cp -r /new_root/mnt/iso-update/squashfs-root/etc/pacman.d /new_root/etc
+
+        # Successful update.
+        rm -f /new_root/mnt/iso-update/.etc-stage
+        touch /new_root/mnt/iso-update/.successful-update
     fi
+
+    # Create overlay directories
+    rm -rf /new_root/.blend-overlays /new_root/.blendrw
+    mkdir -p /new_root/.blend-overlays/{usr,varlib,etcpacman}
 }

akshara.install

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0
+
+build() {
+    add_module overlay
+    add_binary bash
+    add_binary findmnt
+    add_runscript
+}
+
+help() {
+    cat <<HELPEOF
+This hook handles system updates and overlays. No
+configuration is needed.
+HELPEOF
+}
+
+# vim: set ft=sh ts=4 sw=4 et: