YAML I think is too full featured. It does way too much for a config file format. INI and TOML have the advantage of being simple and focused. My only issue wit

YAML I think is too full featured. It does way too much for a config file format. INI and TOML have the advantage of being simple and focused. My only issue with INI is that different parsers aren't always entirely compatible with one another. But that's mostly only a problem for edge cases.