It's as human-readable as asciidoc and produces the same results,
but the tooling is more widely supported. Also both GLib and GTK
switched to it for their man pages, so rst2man is already a
dependency of the platform.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3454>
The gnome-extensions tool code is really independent from the rest of the
code base, and could be used either as part of the gnome-shell build or as
stand-alone project (for example for the extension-ci docker image).
We can actually support both cases by moving the code to a subproject.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/877