Long story short, some time ago I've filed a PR for dev86 and I was informed that upstream is no longer around. However, there's a maintained fork at: https://github.com/jbruchon/dev86 Its maintainer seems to be putting an effort to become the single point of maintenance for this package, so I suppose it makes sense to switch.
Just in case, fork moved to codeberg: https://codeberg.org/jbruchon/dev86
https://codeberg.org/jbruchon/dev86/issues/1 Upstream request for new release