I can't even imagine I need a template system beyond something I can write in a few dozen lines with some regexes.
I did the SQLite thing more than a decade ago. I ain't going back to it unless I have a really really good reason for it.
I really just need a purely static web site where I can write Markdown posts. There's some other stuff I want in terms of producing the static content, but in terms of web site functionality itself, it should just be HTML, CSS and some images.
I also don't mind re-compiling. For my needs, "compiling" my web site is likely to take less than 1 second.
Definitely don't need plugins. :)