ci: debos: Switch to local APT repository

Create a local APT repository during debos builds and use it to test
mainline kernels.

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

Author: lool

.github/workflows/debos.yml

@@ -54,39 +54,49 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Copy Linux deb and U-Boot for RB1 from fileserver space for downloads
+      # copy U-Boot RB1 binary
+      - name: Copy U-Boot for RB1 from fileserver space for downloads
         run: |
           set -ux
-          dir="/fileserver-downloads/qcom-deb-images"
-          if [ "${{ inputs.mainline_kernel }}" = true ]; then
-              mkdir -v debos-recipes/local-debs
-              # copy linux-image but not the -dbg e.g.
-              # linux-image-6.15.0-..._6.15.0...-1_arm64.deb but not
-              # linux-image-6.15.0-...-dbg_6.15.0...-1_arm64.deb
-              find "${dir}/linux-deb-latest/" \
-                  -name linux-image\*.deb \
-                  -not -name linux-image\*-dbg_\*.deb \
-                  -exec cp -av '{}' debos-recipes/local-debs/ \;
-          fi
-          # copy U-Boot RB1 binary
-          cp -av "${dir}/u-boot-rb1-latest/rb1-boot.img" .
+          cp -av "/fileserver-downloads/qcom-deb-images/u-boot-rb1-latest/rb1-boot.img" .
 
       # mtools is needed for the flash recipe
       - name: Install debos and dependencies of the recipes
         run: apt -y install debos mtools
 
-      - name: Build rootfs with debos
+      - name: Setup local APT repo for kernel deb
         run: |
           set -ux
-          localdebs=""
-          if [ -d debos-recipes/local-debs ]; then
-              localdebs="-t localdebs:local-debs/"
+
+          fileserver_downloads="/fileserver-downloads/qcom-deb-images"
+
+          # create a temporary APT repository
+          mkdir -v local-apt-repo
+          if [ "${{ inputs.mainline_kernel }}" = true ]; then
+              mkdir -v local-apt-repo/linux-deb-latest
+              # get the kernel deb from the fileserver space for downloads
+              cp -av "${fileserver_downloads}"/*.deb \
+                  local-apt-repo/linux-deb-latest
           fi
+          # create a minimal APT configuration
+          mkdir -v local-apt-repo/conf
+          echo "APT::FTPArchive::Release::Codename \"trixie\";" \
+              >local-apt-repo/conf/releases
+          dpkg-scanpackages local-apt-repo /dev/null |
+              gzip -9c >local-apt-repo/Packages.gz
+          apt-ftparchive \
+              -c local-apt-repo/conf/releases \
+              release debos-recipes/local-apt-repo \
+              >local-apt-repo/Release
+
+      - name: Build rootfs with debos
+        run: |
+          set -ux
           debos \
               -t overlays:'${{ inputs.overlays }}' \
               -t experimentalkernel:true \
               -t xfcedesktop:true \
-              ${localdebs} \
+              -t aptlocalrepo:${PWD}/local-apt-repo \
               -t kernelpackage:'${{ inputs.kernelpackage }}' \
               --print-recipe \
               debos-recipes/qualcomm-linux-debian-rootfs.yaml

.github/workflows/linux.yml

@@ -100,6 +100,7 @@ jobs:
     uses: ./.github/workflows/debos.yml
     with:
       mainline_kernel: true
+      kernelpackage: linux-image-6.17.0-rc3
 
   test-mainline-linux:
     uses: ./.github/workflows/test.yml