Thanks to Christopher Arndt, I appear to have made a functioning fork:
https://github.com/ponderworthy/mididings
I'm not positive I have the namespace altogether consistent -- some of
the instances of 'Callable' are within a renamed collection, so I had to
rename the rename, in two files
Mididings may be the only JACK-api MIDI router/filter tool around; if
there is another I'd love to know about it. On the other hand t was
working just dandy until, I think, some changes to both Python3 and
legacy support for Python2. I was using its Python3 AUR adaptation
(mididings-git)
