Add Calamares installer extension

Add new Calamares-based installer extension with configuration for
automated Armbian installations, including partition, unpackfs,
displaymanager, and shellprocess modules.

Signed-off-by: Igor Pecovnik <igor@armbian.com>

Author: igorpecovnik

extensions/calamares-installer/calamares.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Armbian Generic Calamares Installer Extension
+
+function post_repo_customize_image__install_calamares() {
+	display_alert "Adding calamares package to the image."
+	do_with_retries 3 chroot_sdcard_apt_get_update
+	do_with_retries 3 chroot_sdcard_apt_get_install calamares
+	display_alert "Configuring Calamares for any Desktop Environment..."
+	run_host_command_logged "cp -vr \"${SRC}/extensions/calamares-installer/config/\"* \"$SDCARD/\""
+	chroot_sdcard "chmod +x /usr/libexec/armbian-finalize.sh"
+	display_alert "Calamares configuration complete."
+}

extensions/calamares-installer/config/etc/calamares/modules.conf

@@ -0,0 +1,13 @@
+modules:
+  - name: welcome
+  - name: partition
+  - name: fstab
+  - name: unpackfs
+  - name: machineid
+  - name: users
+  - name: displaymanager
+  - name: packages
+  - name: grubcfg
+  - name: bootloader
+  - name: shellprocess
+  - name: finished

extensions/calamares-installer/config/etc/calamares/modules/displaymanager.conf

@@ -0,0 +1,6 @@
+# Generic Display Manager Configuration for Calamares
+# This file works for XFCE (LightDM), GNOME (GDM3), and KDE (SDDM).
+
+# By leaving the list empty, Calamares will auto-detect the display manager
+# based on the packages installed in the image.
+displaymanagers: []

extensions/calamares-installer/config/etc/calamares/modules/partition.conf

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+partitionFileSystemType: "ext4"
+defaultFileSystemType: "ext4"
+# This tells Calamares to create a separate /boot partition
+efiSystemPartition: "/boot"
+userSwapChoices:
+    - none
+    - file
+ensureSuspendToDisk: false
+allowZfs: false
+allowLuksAutomatedPartitioning: false

extensions/calamares-installer/config/etc/calamares/modules/shellprocess_final.conf

@@ -0,0 +1,4 @@
+dontChroot: false
+timeout: 300
+script:
+    - "/usr/libexec/armbian-finalize.sh"

extensions/calamares-installer/config/etc/calamares/modules/unpackfs.conf

@@ -0,0 +1,12 @@
+# userpatches/extensions/calamares-installer/config/etc/calamares/modules/unpackfs.conf
+
+# This configuration is for Armbian's live image structure,
+# which has a separate /boot (FAT) and / (ext4) partition.
+unpack:
+    # 1. Copy the entire live root filesystem to the target root partition.
+    - source: "/"
+      destination: ""
+
+    # 2. Copy the live boot partition to the target boot partition.
+    - source: "/boot"
+      destination: "/boot"

extensions/calamares-installer/config/etc/calamares/settings.conf

@@ -0,0 +1,28 @@
+modules-search: [ local ]
+instances:
+- id: partition
+  module: partition
+  config: partition.conf
+- id: fstab
+  module: fstab
+- id: unpackfs
+  module: unpackfs
+  config: unpackfs.conf
+- id: machineid
+  module: machineid
+- id: users
+  module: users
+- id: displaymanager
+  module: displaymanager
+  config: displaymanager.conf
+- id: packages
+  module: packages
+- id: grubcfg
+  module: grubcfg
+- id: bootloader
+  module: bootloader
+- id: shellprocess_final
+  module: shellprocess
+  config: shellprocess_final.conf
+- id: finished
+  module: finished

extensions/calamares-installer/config/usr/libexec/armbian-finalize.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+echo "--- Running Armbian Finalization Script ---"
+
+if [ -f /usr/lib/armbian/armbian-install ]; then
+    echo "Executing armbian-install to configure the bootloader..."
+    /usr/lib/armbian/armbian-install
+else
+    echo "ERROR: /usr/lib/armbian/armbian-install not found!"
+    exit 1
+fi
+
+echo "--- Armbian Finalization Complete ---"
+exit 0

extensions/calamares-installer/config/xdg/autostart/calamares.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=Install Armbian
+Comment=Install this system permanently to your disk
+Exec=pkexec /usr/bin/calamares
+Icon=system-software-install
+Terminal=false
+Categories=System;
+StartupNotify=true