gistfile1.sh

{
  "partitions": [
    {
      "label": "boot",
      "filesystem_type": "FAT",
      "partition_size_nominal": 60,
      "want_maximised": false,
      "uncompressed_tarball_size": 20
    },
    {
      "label": "retropie",
      "filesystem_type": "ext4",
      "partition_size_nominal": 2200,
      "want_maximised": true,
      "mkfs_options": "-O ^huge_file",
      "uncompressed_tarball_size": 15
    }
  ]
}