Meta-blogging, again. It took quite a long time, and had some fits and starts, but now this blog runs on a so-called Child Theme of a freely available WordPress theme.
The trick is that I get to fiddle with small necessary things (like repairing the missing link to jQuery and some Twitter-needed meta tag) in files that are not updated and outdated when the theme gets an update.
Something like that is enough. The automatically-included functions.php file makes it easy to do things the WordPress way, using their hooks-and-actions concept.
All this, and I really only wanted to install Known, the Indieweb blogging engine that supports webmentions.