Build squeezelite on the device on a 64-bit or trixie userland

The shipped squeezelite is a 32-bit ARM binary linked against libFLAC.so.12 (bookworm
on armhf). Elsewhere the role now builds upstream squeezelite at a pinned commit with
the same options as the old ARM build, installing the -dev packages instead of
soname-specific runtime libraries. `ansible_architecture` is the kernel's, so the
choice reads the userland's architecture from dpkg; override with
`pi_squeezelite_custom_build_from_source: true|false`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

roles/pi_squeezelite_custom/tasks/main.yml

@@ -3,15 +3,23 @@
   ansible.builtin.apt:
     name: squeezelite
     state: absent
+- name: Get the userland architecture
+  # `ansible_architecture` is the *kernel's*: a Pi on a 64-bit kernel with an armhf
+  # userland says aarch64. What decides whether a 32-bit binary runs is dpkg's.
+  ansible.builtin.command: dpkg --print-architecture
+  register: pi_squeezelite_custom_dpkg_arch
+  changed_when: false
+  check_mode: false # read-only
+- name: Decide between the prebuilt binary and a build on the device
+  ansible.builtin.set_fact:
+    pi_squeezelite_custom_build: >-
+      {{ (pi_squeezelite_custom_build_from_source | string | lower == 'true')
+         or (pi_squeezelite_custom_build_from_source | string | lower == 'auto'
+             and (pi_squeezelite_custom_dpkg_arch.stdout | trim != 'armhf'
+                  or ansible_facts.distribution_major_version | int >= 13)) }}
 - name: Install dependencies
   ansible.builtin.apt:
-    name:
-      - libmad0
-      - libmpg123-0
-      - libflac12
-      - libvorbisfile3
-      - libfaad2
-      # for building libssl-dev, libasound2-dev, libflac-dev, libvorbis-dev, libsoxr-dev, libfaad-dev, libmad0-dev, libmpg123-dev
+    name: "{{ pi_squeezelite_custom_build_packages if pi_squeezelite_custom_build else pi_squeezelite_custom_runtime_packages }}"
     state: present
     cache_valid_time: 7200
 - name: Remove old config file if present
@@ -24,6 +32,10 @@
     dest: /opt/squeezelite
     mode: "700"
   notify: Restart squeezelite
+  when: not pi_squeezelite_custom_build
+- name: Build squeezelite from source (needed on a 64-bit userland, see README)
+  ansible.builtin.include_tasks: build.yml
+  when: pi_squeezelite_custom_build
 - name: Install systemd service file
   ansible.builtin.template:
     src: squeezelite.service