I'll take a look later today. Just for context, are you using --serve --incremental or just --serve?

No, you're good, I was able to get this reproduced, just need to dig a bit more on how to patch this in a way that preserves caching functionality for speed while also clearing things where appropriate. Then I also should write more unit tests that cover this, because right now caching and --serve don't have any test coverage.

On a somewhat related note, issues like this will be much easier to triage once I get #21 finished.

Possible opportunity to handle this upstream so we can do it right since Vento doesn't provide any information about associations of includes to their dependents. The easy way to handle cache during development would be to "clear-all-on-save" but that's not super conservative.

I'm going to raise this upstream to see what potential options there are for "smart caching" but in the meantime I can implement a hotfix that clears the cache on every save as a holdover.