[skydhash]

> The absolute moment you find yourself thinking of putting conditional logic, or string substitution, or anything like that, in your pure config format, switch to a real programming language, before you end up managing several times the complexity of one with only some of the benefits

That’s where you add a plugin system or an ipc mechanism, not a whole programming language.

[pie_flavor]

Plugins and IPC do not replace configuration, though configuration may invoke or enable plugins.