as of the current build, sta6 is in it's BETA stage.
sta6 starts as a bundler for my personal page fwttnnn.com, and it's currently in a slow and/or heavy development, so expect API-breaking changes.
what doesn't work:
sta6 does not remove pages that's already built (e.g., adding /hi, then deleting pages/hi.lisp after building won't delete /hi from the build/ folder).