aptly/system/changes/uploaders4.json

{
    "groups": {
        "developers": ["21DBB89C16DB3E6D", "37E1C17570096AD1"],
    },
    "rules": [
        { "condition": "Source (dangerous) | Source (kernel)",
          "deny": ["*"],
        },
        { "condition": "Source (hardlink",
          "allow": ["developers", "admins"],
        }
    ]
}