test-archlinux.yml

name: Test ArchLinux
on:
  push:
    branches:
      - 'main'
      - 'releases/**'
  pull_request:
  workflow_dispatch:

jobs:
  # ArchLinux does not come with an image combining root and boot partitions
  # This shows how to proceed and could be combined with cache.
  test_archlinux:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Prepare ArchLinux image
      run: |
        # https://archlinuxarm.org/platforms/armv7/broadcom/raspberry-pi-2
        # Install dependency
        sudo apt-get -y install libarchive-tools
        # Create a 1.5 GB image
        dd if=/dev/zero of=$RUNNER_TEMP/archlinux.img bs=1M count=1536
        # 2. At the fdisk prompt, delete old partitions and create a new one:
        # using the sed comment trick of https://superuser.com/a/984637
        sed -e 's/\s*\([\+0-9a-zA-Z]*\).*/\1/' << EOF | fdisk $RUNNER_TEMP/archlinux.img
          o # clear the in memory partition table
          n # new partition
          p # primary partition
          1 # partition number 1
            # default - start at beginning of disk 
          +200M # 200 MB boot partition
          t # type
          c # W95 FAT32 (LBA)
          n # new partition
          p # primary partition
          2 # partion number 2
            # default, start immediately after preceding partition
            # default, extend partition to end of disk
          w # write the partition table
          q # and we're done
        EOF
        # create loopdev
        loopdev=$(sudo losetup --find --show --partscan $RUNNER_TEMP/archlinux.img)
        # 3. Create and mount the FAT filesystem:
        sudo mkfs.vfat ${loopdev}p1
        mkdir boot
        sudo mount ${loopdev}p1 boot
        # 4. Create and mount the ext4 filesystem:
        sudo mkfs.ext4 ${loopdev}p2
        mkdir root
        sudo mount ${loopdev}p2 root
        # 5. Download and extract the root filesystem:
        wget http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-armv7-latest.tar.gz
        sudo -u root bsdtar -xpf ArchLinuxARM-rpi-armv7-latest.tar.gz -C root
        sync
        # 6. Move boot files to the first partition:
        sudo mv root/boot/* boot
        # 7. Unmount the two partitions:
        sudo umount boot root
        # Cleanup
        rm ArchLinuxARM-rpi-armv7-latest.tar.gz
        rmdir boot
        rmdir root
    - uses: ./ # pguyot/arm-runner-action@HEAD
      with:
        base_image: file://$RUNNER_TEMP/archlinux.img
        cpu: cortex-a53
        commands: |
            # 10. Initialize the pacman keyring and populate the Arch Linux ARM package signing keys:
            pacman-key --init
            pacman-key --populate archlinuxarm