misc scripts: add support for arm64 (#12639)

* misc scripts: add support for arm64

* Replace tools.func call that checks arch

* Update misc/build.func

Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

* Update misc/build.func

Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

* Update misc/build.func

Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

* Update misc/build.func

Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

* build.func: change back to VE

* build.func: remove arm64 support for focal, bullseye

Legacy support removed since no cts use them anymore.

* Improve arm64 support and arch-specific downloads

Add clearer architecture error messages and gate arm64 usage, plus implement architecture-aware behavior across the toolkit. Changes include: update exit-code messages to reference amd64/arm64, refuse arm64 unless explicitly enabled, show architecture in summaries, and use arch-specific package lists when installing in containers. Make downloads for FFmpeg and yq choose the correct amd64/arm64 binaries, tighten template download error handling and formatting, and clean up minor whitespace/comment issues. These changes aim to make arm64 handling explicit and downloads/installations more robust for non-amd64 systems.

* remove arm64 overlay

* update ifupdown2 source

* Revert "remove arm64 overlay"

This reverts commit 231945dfa7.

* Revert changes from "Improve arm64 support and arch-specific downloads"

* Reapply "Improve arm64 support and arch-specific downloads"

This reapplies commit 7c051fb648.

* Reapply "remove arm64 overlay"

This reverts commit 866b6950c0.

* Redo template name handling

* fix template name handling change

* add ensure_whiptail function

This is required as some arm64 systems will not have whiptail installed, as it is not installed by default.

* add arm64_notice function

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* fix for copilot detected bugs

---------

Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>
Co-authored-by: CanbiZ (MickLesk) <47820557+MickLesk@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

misc/core.func

@@ -346,9 +346,15 @@ pve_check() {
 # - Provides link to ARM64-compatible scripts
 # ------------------------------------------------------------------------------
 arch_check() {
-  if [ "$(dpkg --print-architecture)" != "amd64" ]; then
-    msg_error "This script will not work with PiMox (ARM architecture detected)."
-    msg_warn "Visit https://github.com/asylumexp/Proxmox for ARM64 support."
+  local arch
+  arch="$(dpkg --print-architecture)"
+  if [[ "$arch" != "amd64" && "$arch" != "arm64" ]]; then
+    msg_error "This script requires amd64 or arm64 (detected: $arch)."
+    sleep 2
+    exit 106
+  fi
+  if [[ "$arch" == "arm64" && "${var_arm64:-}" != "yes" ]]; then
+    msg_error "This script does not yet support arm64."
     sleep 2
     exit 106
   fi
@@ -1714,6 +1720,38 @@ function get_lxc_ip() {
   export LOCAL_IP
 }
 
+# ------------------------------------------------------------------------------
+# ensure_whiptail()
+#
+# - Ensures whiptail is installed
+# - Some ARM64 systems will not have whiptail installed
+# - Exits with error message if installation fails
+# ------------------------------------------------------------------------------
+ensure_whiptail() {
+  command -v whiptail >/dev/null 2>&1 && return 0
+
+  msg_info "Installing whiptail"
+  apt_update_safe
+  $STD apt-get install -y whiptail || {
+    msg_error "Failed to install whiptail"
+    exit 100
+  }
+  msg_ok "Installed whiptail"
+}
+
+# ------------------------------------------------------------------------------
+# arm64_notice()
+#
+# - Shows a short warning when running scripts on ARM64 systems
+# ------------------------------------------------------------------------------
+arm64_notice() {
+  [[ "$(dpkg --print-architecture)" == "arm64" ]] || return 0
+
+  whiptail --backtitle "Proxmox VE Helper Scripts" \
+    --title "ARM64 SUPPORT" \
+    --ok-button "Continue" \
+    --msgbox "ARM64 support is in active development.\n\nSome scripts, packages, or application releases may not be fully tested or working yet." 10 68
+}
 # ==============================================================================
 # SIGNAL TRAPS
 # ==============================================================================