The static site generator that almost wasn't, but then was.

Am I spending development time on things that matter?

Is file enumeration when using SBCL on Windows so slow that it can't support a fast static site generator? Yes and no.

This is a personal anecdote about the struggle to avoid over-engineering a static site generator.

Yes, you can build real-time, interactive browser-based apps without JavaScript. But I wouldn't suggest using this particular approach.