feat(debos/rootfs): Add Debian backports

Add Debian backports to APT sources and prefer them for a few key source
packages that participate in hardware enablement.

Signed-off-by: Loïc Minier <[email protected]>

Author: lool

debos-recipes/overlays/backports/etc/apt/preferences.d/debian-backports.pref

@@ -0,0 +1,6 @@
+# for binary packages built from these source packages, score the version from
+# Debian backports higher as to get hardware enabled or better hardware support
+
+Package: src:alsa-ucm-conf:any src:firmware-free:any src:firmware-nonfree:any src:linux:any src:linux-signed-arm64:any src:mesa:any
+Pin: release n=trixie-backports
+Pin-Priority: 900

debos-recipes/overlays/backports/etc/apt/sources.list.d/debian-backports.sources

@@ -0,0 +1,7 @@
+# Debian backports
+Types: deb
+URIs: http://deb.debian.org/debian
+Suites: trixie-backports
+Components: main contrib non-free non-free-firmware
+Enabled: yes
+Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

debos-recipes/qualcomm-linux-debian-rootfs.yaml

@@ -51,6 +51,10 @@ actions:
     description: Create Debian APT sources
     source: overlays/apt-sources
 
+  - action: overlay
+    description: Add Debian backports APT configuration
+    source: overlays/backports
+
 {{- if .overlays }}
 {{- range $overlay := split "," .overlays }}
   - action: overlay