This seems quite interesting and powerful for what most server-side rendered websites need from javascript, however the _usage_ seems fairly klunky to me at this stage.
I could see this being a joy to work with though if a well determined usage pattern emerges where you have something like a `some_page_template.html` file open next to a `some_page_hyperscript.hy` where you define all the locally scoped functionality and the two are combined by your webserver template engine.
It wouldn't be very hard to set up, but having a de-facto way to structure and organize things it would likely help with adoption and prevent new users from being architechture astronauts.