DNF plugin directory?

[Tom Horsley]

Is there a way to ask the question:

What directory do I use to install a DNF plugin?

Because it seems to change in every fedora release, and so far
the only way I can find it is to run dnf under strace and
see where it looks for plugins :-).

There wouldn't happen to be a release independent directory
like /etc/dnf/plugins or something that won't constantly
change on me?