packer.json

{
  "variables": {
    "hostname": "deathstar",
    "username": "shin",
    "github_keys": "https://github.com/TryhardPickles.keys",
    "git_user_email": "pickstryhard143@gmail.com",
    "git_user_name": "Shin",
    "size": "2G",
    "img_url": "http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-aarch64-latest.tar.gz",
    "file_unarchive_bin": "bsdtar",
    "file_unarchive_flags": "-xpvf",
    "img_name": "raspberry-pi4.img",
    "qemu_binary": "/usr/bin/qemu-aarch64-static",
    "pi4_alt_fstab": "true",
    "lockdown_root": "false",
    "pi4_bootloader": "true",
    "pi5_bootloader": "false",
    "cm4_usb": "false"
  },
  "builders": [{
    "type": "arm",
    "file_urls" : ["{{user `img_url`}}"],
    "file_checksum_url": "{{user `img_url`}}.md5",
    "file_checksum_type": "md5",
    "file_unarchive_cmd": ["{{user `file_unarchive_bin`}}", "{{user `file_unarchive_flags`}}", "$ARCHIVE_PATH", "-C", "$MOUNTPOINT"],
    "file_target_extension": "tar.gz",
    "image_build_method": "new",
    "image_path": "{{user `img_name`}}",
    "image_size": "{{user `size`}}",
    "image_type": "dos",
    "image_partitions": [
      {
        "name": "boot",
        "type": "b",
        "start_sector": "2048",
        "filesystem": "vfat",
        "size": "256M",
        "mountpoint": "/boot"
      },
      {
        "name": "root",
        "type": "83",
        "start_sector": "526336",
        "filesystem": "ext4",
        "size": "0",
        "mountpoint": "/"
      }
    ],
    "qemu_binary_source_path": "{{user `qemu_binary`}}",
    "qemu_binary_destination_path": "{{user `qemu_binary`}}"
  }],
  "provisioners": [
    {
      "type": "file",
      "source": "resizerootfs",
      "destination": "/tmp/resizerootfs"
    },
    {
      "type": "file",
      "source": "resizerootfs.service",
      "destination": "/tmp/resizerootfs.service"
    },
    {
      "type": "file",
      "source": "mac-host",
      "destination": "/tmp/mac-host"
    },
    {
      "type": "file",
      "source": "mac-host.service",
      "destination": "/tmp/mac-host.service"
    },
    {
      "type": "file",
      "source": "throttle.sh",
      "destination": "/tmp/throttle.sh"
    },
    {
      "type": "shell",
      "script": "bootstrap.sh",
      "environment_vars": [
        "HOSTNAME={{user `hostname`}}",
        "USERNAME={{user `username`}}",
        "GITHUB_KEYS={{user `github_keys`}}",
        "GIT_USER_NAME={{user `git_user_name`}}",
        "GIT_USER_EMAIL={{user `git_user_email`}}",
        "PI4_ALT_FSTAB={{user `pi4_alt_fstab`}}",
        "LOCKDOWN_ROOT={{user `lockdown_root`}}",
        "PI4_BOOTLOADER={{user `pi4_bootloader`}}",
        "PI5_BOOTLOADER={{user `pi5_bootloader`}}",
        "CM4_USB={{user `cm4_usb`}}"
      ]
    }
  ]
}