Yes and no. Currently, since it is so alpha, and nobody is running servers, you would need to run both sides, a client and a server, so 2 radios. This also 2 computers. One on each side. The server runs unattended 24/7(or whatever you want to run of course). And a client. Any low powered device that can run python should work for both. I'm running a pi zero 2 just fine.
But... You also need a way to connect to the radios for ptt. You could use a hardware tnc device on each, or what I'm doing is running a software modem on each side. This has a serial connection to my handhelds alon with the sound cable(CPU modem software does the modulation). Your zap was tested on my house using two dirt cheap baofeng radios and 2 digirig sound cards.
You don't technically need the digirigs, you could use vox mode on the radio and not have the modem send a ptt signal, but it's less reliable in my tests.
I'll try and draw up some diagrams and add to the repo.
Digirig Mobile – digirig