> Load the table

If it comes from an impure function, you don't know if you'll get the same result each time you evaluate it.

> Modify. Serialize to file.

And potentially lose information.

You mean my Hakyll site? It's mot meant to be :)

That doesn't seem very ergonomic - especially for the use cases we have in mind.

Lua has evolved and is used for a lot more today than it was initially created for.

You might be surprised how well that works :)