My only experience with toml is complicated nested ones because I'm sure that the maintainers outgrew whatever was simple. Off the top my head it's just containerd config. Yaml probably a better choice than json and ini is fine if it gets the job done, but it's it really more than .env? My opinion is the env should do a lot of lifting anyway. I'm thinking there's always "tooling." My toml might syntax but be logically incorrect all the formats have that problem and linting doesn't stop at json. Like changing my containerd config I don't really know if it took or not