boost-versions/config/boost-manifest-config.json

{
    "regex": "boost-\\d+\\.\\d+\\.\\d+-(\\w+)-([\\d\\.]+)?-?([\\w\\.]+)-(x[\\d_]+)",
    "groups": {
        "arch": 4,
        "platform": 1,
        "platform_version": 2,
        "toolset": 3
    }
}