This is where I git clone’d it from when I recently upgraded my Raspberry Pi from buster to bookworm (and it involved some juggling with python in a virtual environment as described in the doc/install.txt document).
I recall Paul posting an announcement to the HECnet list about this last year.
My configuration is rather simple though - as I’ve just got a single Multinet link to Wiz’s area router (I’ve redacted the IPv4 address a.b.c.d on port #), essentially just -
circuit eth-0 Ethernet pcap:eth0 --random-address
circuit dmc-35 Multinet a.b.c.d:#:connect --cost 5
routing 35.699 --type l2router
node @/home/pi/HECnet/nodenames.dat
system --ident "PyDECnet on TNRTR (35.699)"
http --https-port 0 --http-port 8000 -4
api
where the nodenames.dat file is the HECnet node list I fetch from MIM::HECNET:nodenames.dat periodically.
Tony